Recently I have stumbled on a possible answer to the peak oil problem, which threatens a huge crisis in the future: Plugin hybrid vehicles, or PHEVs. This is not the final answer to the problem. Our civilization is still in trouble. But it postpones for years the day of reckoning on energy. Maybe then we can find something sustainable.
I hit the answer after driving my new 2005 Toyota Prius a while. If I go slow enough, only the bright yellow arrows on the display flow, indicating that the car is running on the electric motor. During this time it is not using any gasoline. But I need to be careful, as the dull orange arrows indicating gasoline can come up any time. Further, many times when the Prius uses gasoline, a green arrow indicates that this gasoline is charging the battery. This is why you don't have to plug the car into the house current.
But that's too bad in a way. It still runs on gasoline, and it gets good gasoline mileage only because it makes maximum use of the energy used in driving the car, especially braking. If it could be plugged into the house current, the motor would last longer, and less gasoline would be required. So I wondered why my Prius could not be plugged into house current and run solely on battery power when doing local errands. Most trips are short ones, so most of the time it would run on battery.
This would cause a huge drop in the car's gasoline production. Only the long vacation trips would require gasoline, and maybe not if hotels provide charging stations. That's a 90% drop in the most gasoline-using nation on earth. This much of a drop certainly would put a dent into the gasoline scarcity caused by peak oil.
This type of car is called a plugin hybrid, or PHEV. If most everyone used these, hardly any gasoline would be consumed in everyday activities. That would cause a huge drop in the demand for oil, perhaps 50% in the US and maybe the world as well; even China would want the new PHEVs. We would have the curious situation of the world in oil production decline after reaching the Hubbert peak, only to have demand lowered so drastically that a glut occurs.
These changes could be cataclysmic. US automakers may go bankrupt, and huge mountains of useless old cars, especially SUVs, would crowd the junk lots. So that solves the oil problem, at least for a while.
But it will return. Production will continue to decline, and with drastically lowered gasoline prices (maybe 50 cents a gallon?) everyone will want to drive all over the place. Eventually demand will exceed supply anyway. Further, the energy is not saved. It is merely shifted to the power grid, which runs mostly on coal and nuclear energy. There is plenty of both coal and uranium around, but both are finite fuels, and so the danger is that when the demand-supply point is reached again, it will affect not only travel, but electricity as well. Massive blackouts could occur in the 2010s.
But it buys us some time. This time should be used to get us used to using less energy, and it should be used to find renewable ways of generating energy, perhaps by solar and wind.
Blogtrek
Blogtrek
2005/04/12
2005/04/06
The 2 Shortage
There are shortages of a lot of things lately, including coffee, water, fish, and most of all, oil. The latter has caused the price of gasoline to soar as of late, creating now another shortage that makes it hard to find out what the price of gasoline is. It is the 2 shortage. Gasoline stations are running out of 2s to indicate their price with. A month ago, a typical price board may have read $1.79, $1.89, and $1.98, with no 2s required. Nowadays, a typical pattern may be $2.12, $2.22, $2.32. That requires seven 2s! Do gasoline stations have enough 2s for a pattern like this? Or even worse, a string of three $2.22s? Apparently, many do not. I see prices like $2.3[] out there, where the brackets indicate a missing digit. So for some time to come, we may be confused as to what the price of a grade of gasoline is. Now oil is something that is supposed to get in increasingly short supply soon, as the world nears the peak of world production. But the 2 shortage should resolve itself in a year or two, when the prices start moving away from the 2.20 range. Until then, don't be surprised if when you go to the counter to pay for gasoline, the attendant will say, "Do you have a 2 we can borrow?"
2005/02/08
Toyota Prius
Recently I bought a 2005 Toyota Prius, because I wanted a high-mileage car, with a possible world oil shortage coming up. So far it has been a good car. It is quiet, and sometimes you don't even notice it is around. It gets about 44 miles per gallon, the most of any car that I have owned. And I don't have to get keys out to unlock the car.
But the car is not quite as good as what it was hyped up to be. At the first refill, my Prius registered 44.1 miles per gallon. Fairly good, and what I expected. One cold frosty morning, I ran the car to defrost the windshield. Later that day I found a crack in the windshield. I had it replaced at some inconvenience. Apparently this car's windshield, like all car windshields as of late, can't take heating like that, especially if there are stars in the windshield from stone strikes on the highway, which I believe is a growing menace that the hypermedia never even mentions. After refilling the second time, I got only 38 miles a gallon, even though the display said 42.4 miles per gallon.
Now I find that using the defroster or the air conditioner will significantly decrease fuel economy, because for some reason it prevents the gasoline engine from cycling off. So I won't use them much. Further, there are a lot of gizmos in this car, and it takes some time to learn them all. It's like computers, but not quite as bad. But why do we need all these gizmos when the object was simply to get good fuel economy?
I still like my Prius, and I hope to get some years of good service out of it.
But the car is not quite as good as what it was hyped up to be. At the first refill, my Prius registered 44.1 miles per gallon. Fairly good, and what I expected. One cold frosty morning, I ran the car to defrost the windshield. Later that day I found a crack in the windshield. I had it replaced at some inconvenience. Apparently this car's windshield, like all car windshields as of late, can't take heating like that, especially if there are stars in the windshield from stone strikes on the highway, which I believe is a growing menace that the hypermedia never even mentions. After refilling the second time, I got only 38 miles a gallon, even though the display said 42.4 miles per gallon.
Now I find that using the defroster or the air conditioner will significantly decrease fuel economy, because for some reason it prevents the gasoline engine from cycling off. So I won't use them much. Further, there are a lot of gizmos in this car, and it takes some time to learn them all. It's like computers, but not quite as bad. But why do we need all these gizmos when the object was simply to get good fuel economy?
I still like my Prius, and I hope to get some years of good service out of it.
2005/01/23
We had Church Services!
It was being predicted all week long. This was going to be a major snowstorm for the Richmond area. The close we got to the event on 2005 January 22, a Saturday, the more it became clear that this was going to be a rain, freezing rain, and maybe sleet storm. That it did happen. Sleet came down from the skies at 1030; at 1130 it was all freezing rain at 26 degrees F/-3 degrees C. It came down more or less all afternoon and coated everything with ice. So the churches all over the metro area began closing. First so and so Baptist Church, no services. That Christian Church, no services. So and so Methodist, service canceled, on and on, but no mention of my church, the First Unitarian Universalist Church of Richmond. It seemed that for most of the city, the word of the weatherman took priority over the word of God.
I decided to go, even though the traffic cameras said that I-95 was covered with ice and snow. When I got there, I discovered that what I was seeing was not ice but salt! The roads were white. But they got me there.
So what happened at the First UU Church of Richmond? The first service was canceled because the speaker was involved in snow cleanup. Our minister, the Rev. Alane Cameron Miles, decided to have the second service. What, Alane, with all that ice on the ground? But no, she was willing to do it. And guess what? We had a service. Not only a service but a really great one. If I had not gone, I would have missed it. But I went. That's because I felt that I did not want to hang around the house all day and worry about the weather, and not getting any companionship from the people in the church. So the minister spoke, and she said that we all came in on a cold day because we felt that we did not want to hang around the house all day and worry about the weather, and not get any companionship from the people in the church. That is just what I wanted to hear.
So while all the God-fearing churches shut up shop for the day, the First UU, where we are encouraged to develop our own theology, had a service. It was an opportunity that most people in the area did not have.
I decided to go, even though the traffic cameras said that I-95 was covered with ice and snow. When I got there, I discovered that what I was seeing was not ice but salt! The roads were white. But they got me there.
So what happened at the First UU Church of Richmond? The first service was canceled because the speaker was involved in snow cleanup. Our minister, the Rev. Alane Cameron Miles, decided to have the second service. What, Alane, with all that ice on the ground? But no, she was willing to do it. And guess what? We had a service. Not only a service but a really great one. If I had not gone, I would have missed it. But I went. That's because I felt that I did not want to hang around the house all day and worry about the weather, and not getting any companionship from the people in the church. So the minister spoke, and she said that we all came in on a cold day because we felt that we did not want to hang around the house all day and worry about the weather, and not get any companionship from the people in the church. That is just what I wanted to hear.
So while all the God-fearing churches shut up shop for the day, the First UU, where we are encouraged to develop our own theology, had a service. It was an opportunity that most people in the area did not have.
2004/12/20
Beautiful night under the Stars
Last Friday I went out in the cold to the Science Museum of Virginia, along with other Richmond Astronomical Society members to show the public the stars. It was the best night for stargazing in years. Despite the light
pollution of Richmond, we were able to see lots of stars with the naked
eye, down to about 3rd magnitude, and solar system bodies and stars both were spectacular. Saturn produced its usual assemblage of rings that are the highlight for many visitors, and the Moon was in an especially good phase. The alignment on my telescope on Vega and Capella was especially good, perhaps because I was able to get Polaris in the guide scope, and because Vega and Capella were near the horizon and far apart. Objects stayed in my telescope reasonably well, despite non-fresh batteries. It was the first time that I can remember that I was able to get the Andromeda Galaxy in my telescope at a Skywatch. It showed a rather unexciting fuzzy light ball. I got the Orion Nebula in the telescope as well, and with my light pollution filter, the details of the nebula really stood out. And to top it off, a -5 magnitude bolide, brighter than Venus, shot through the constellation Gemini.
We tried looking at the street with the light pollution filter. The bright yellow hat of Arby's became a dull red, and McDonald's yellow arches also turned a dull red. The peachy streetlights turned much dimmer, as the filter was especially aimed at stopping that light. If streets were like that, we could see more stars. People need to stop blaring their lights.
pollution of Richmond, we were able to see lots of stars with the naked
eye, down to about 3rd magnitude, and solar system bodies and stars both were spectacular. Saturn produced its usual assemblage of rings that are the highlight for many visitors, and the Moon was in an especially good phase. The alignment on my telescope on Vega and Capella was especially good, perhaps because I was able to get Polaris in the guide scope, and because Vega and Capella were near the horizon and far apart. Objects stayed in my telescope reasonably well, despite non-fresh batteries. It was the first time that I can remember that I was able to get the Andromeda Galaxy in my telescope at a Skywatch. It showed a rather unexciting fuzzy light ball. I got the Orion Nebula in the telescope as well, and with my light pollution filter, the details of the nebula really stood out. And to top it off, a -5 magnitude bolide, brighter than Venus, shot through the constellation Gemini.
We tried looking at the street with the light pollution filter. The bright yellow hat of Arby's became a dull red, and McDonald's yellow arches also turned a dull red. The peachy streetlights turned much dimmer, as the filter was especially aimed at stopping that light. If streets were like that, we could see more stars. People need to stop blaring their lights.
Yuletide fantasy run
I made my Yuletide fantasy run through my development on Saturday night, 2004 December 18. This year some brilliant displays of the past few years were gone. But there were some others to replace them. None of them showed that much originality. One showed an outline Texas on their lawn. Another used red candles instead of blue ones. But we use red candles, three at a time in our windows. The prize this year goes to the end of my street. There it was. The Great Walking Stickman of Yuletide. Somone put lights way up the trunk and some of the branches of a tall, thin tree, and the entire thing was five stories high and looked like a gigantic stalk of a man with stick arms outreached. I have never seen anything like that before. What did I have this year? I switched my white and red lights, to show a red bush out on our lawn. I don't mean the one in the White House. I mean a bush bush with red bulbs lighting it up. And I constructed a huge triangle in a large bush, about two stories high. If I put another triangle into this design, I can come up with a Virginia. Maybe I'll try that.
2004/11/26
Injured Bird on Thanksgiving: Followup
I will not be going to a rehab center today. Unfortunately, the bird died overnight.
2004/11/25
Injured Bird on Thanksgiving
Today is Thanksgiving. What is Thanksgiving? It is where we thank ourselves for all that we have gotten throughout the year. We feast out and take a holiday. But things happen even on holidays, and not every being is blessed on Thanksgiving. Perhaps instead of thanking, we need to go out and make a being thankful of us.
Today something like that happened. Late in the afternoon, as the sun was about to set, I saw a northern or slate-colored junco (also called a snowbird) waddling around the feeding pole, picking up food. I wondered if it was OK. It seemed to have something sticking out of its side, maybe a feather. So I went outside to see if it would fly away. It didn't. It ran away from me, and it could not go that fast either. So now I had an injured bird to take care of.
I called Anne up at work - she is a nurse who has to work at Thanksgiving working hard to give thanks to others - and she said to put it in a box and put it on the freezer in the garage. So I did, poking holes in the box and not giving it food or water, as some web sites recommend that I don't. I called up some people from the local Audubon society. Late at night, someone gave me the name of rehab center counselors that I can call tomorrow. But I don't think they would do anything tonight. Why lose sleep and ruin a Thanksgiving because of a small bird? But this bird was in need of help and not getting it because we are celebrating our own thanks. We need to stop thinking about thanking, especially thanking some supposed Creator or God up above, and start thinking about giving thanks. This bird needed it.
So I will call tomorrow and find somewhere to take the bird, and hope it can be nursed to health. I heard that birds are hard to take care of. What could have caused the injury? One theory is that it was on the feeder getting food when a squirrel tried to get on it. It was one of these feeders that spin around and whop a squirrel off if it gets on. It could have spun the junco off and slammed it into something. It could have flown into our window or the feeder pole. I think the most likely cause was a cat. The neighbors let their cats wander all over the place. In so doing, they destroy many songbirds a year. Many authorities say that cats are destructive and should be kept inside. I chase them off, but maybe a talking to the owners would be good - mention the injured bird.
Tomorrow we will take the bird to a rehab place and hope for the best.
Today something like that happened. Late in the afternoon, as the sun was about to set, I saw a northern or slate-colored junco (also called a snowbird) waddling around the feeding pole, picking up food. I wondered if it was OK. It seemed to have something sticking out of its side, maybe a feather. So I went outside to see if it would fly away. It didn't. It ran away from me, and it could not go that fast either. So now I had an injured bird to take care of.
I called Anne up at work - she is a nurse who has to work at Thanksgiving working hard to give thanks to others - and she said to put it in a box and put it on the freezer in the garage. So I did, poking holes in the box and not giving it food or water, as some web sites recommend that I don't. I called up some people from the local Audubon society. Late at night, someone gave me the name of rehab center counselors that I can call tomorrow. But I don't think they would do anything tonight. Why lose sleep and ruin a Thanksgiving because of a small bird? But this bird was in need of help and not getting it because we are celebrating our own thanks. We need to stop thinking about thanking, especially thanking some supposed Creator or God up above, and start thinking about giving thanks. This bird needed it.
So I will call tomorrow and find somewhere to take the bird, and hope it can be nursed to health. I heard that birds are hard to take care of. What could have caused the injury? One theory is that it was on the feeder getting food when a squirrel tried to get on it. It was one of these feeders that spin around and whop a squirrel off if it gets on. It could have spun the junco off and slammed it into something. It could have flown into our window or the feeder pole. I think the most likely cause was a cat. The neighbors let their cats wander all over the place. In so doing, they destroy many songbirds a year. Many authorities say that cats are destructive and should be kept inside. I chase them off, but maybe a talking to the owners would be good - mention the injured bird.
Tomorrow we will take the bird to a rehab place and hope for the best.
2004/11/20
Halloween 2004
This year's Halloween had a few unusual features. The first is that the first trick-or-treaters (3 of them) came at 17:41 (5:41 pm), beating the previous record of 17:48, and were followed only a few minutes later by another group of 3 trick-or-treaters. So they started coming early. There were fewer of them this year, 54 compared to last year's 70. I have come up with a combined graph of these trick-or-treaters, and they indicate two peaks over the past 8 years of trick-or-treaters. One of these is at 18:22 and another is at 19:27. Apparently they like to come during dinner time. One interesting characteristic of this year's trick-or-treaters: an abnormally large number of them were adolescent males, between 11 and 16 years old. I don't know why this age group wants to go around trick-or-treating, unless they are out roving around getting their kicks or something. Or maybe these kids just don't want to grow up. Numbers of trick-or-treaters have definitely gone down since 2001, the year of Planeattack. Apparently people are more afraid and security-conscious and the result is fewer trick-or-treaters. Maybe they go to organized Halloween parties instead. It doesn't matter. It's just a tradition.
2004/11/17
K-Mart and Sears
It came as a blockbuster early today. K-Mart and Sears were going to merge. No, actually, little old nearly bankrupt K-Mart was going to buy Goliath Sears. This really seemed weird. But the two companies apparently complement each other. The new corporation will have K-Mart's real estate in places away from malls and Sears' tradition of quality. They are going to call the company Sears Holdings. Holdings? That seems trite to me. Is the CEO of Sears going to pick up and hold the CEO of K-Mart?
I think they deserve a better name than that. One immediate idea is K-Sears, but that seems too ordinary. Perhaps S-Mart would be better because that would be smart. S-mart, don't you get it? Shop Smart at S-Mart! But maybe that seems too much like PetSmart. Or how about K-Sears? Or K-Mart, Roebuck and Co.? Or K-Mart, Sears, Roebuck and Co.? Or maybe KSR corporation? Uh-uh. That is getting a little hackneyed again. How about Mart-K-Sears, as in The Three Mart-K-Sears? Or maybe Mouse-K-Sears? Em-Aye-Cee, Kay-Ee-Wye… Uh-oh. I see another merger coming.
But if not the name, maybe this merger will come with interesting subnames. For example, K-Mart sells Martha Stewart products, and Sears recently purchased Land's End. So combine these two together and the result is Martha's End. Or maybe we will fix our houses with Martha Stewart Craftsman tools or wash our clothes in our Martha Kenmore washer. Or maybe call the store K'Mart in honor of Apostrophe, one of Sear's product lines. Or how about the Sears Tower? Paint that blue and get The Blue Tower, or the Blue Light Tower. That won't work. The tallest building in the US is the Great Tower of Chicago, not the Sears Tower, because Sears no longer owns it, and so Sears can't paint it blue.
Of course none of this will happen. We will go to our Sears and K-Marts as always, although we may see Craftsman Tools in K-Mart or Martha Stewart products in Sears, and we may see a host of Sears outside the malls. But remember that a titanic merger occurred today between two retail giants. Let's hope that's titanic as in colossal instead of as in blub, blub, blub.
I think they deserve a better name than that. One immediate idea is K-Sears, but that seems too ordinary. Perhaps S-Mart would be better because that would be smart. S-mart, don't you get it? Shop Smart at S-Mart! But maybe that seems too much like PetSmart. Or how about K-Sears? Or K-Mart, Roebuck and Co.? Or K-Mart, Sears, Roebuck and Co.? Or maybe KSR corporation? Uh-uh. That is getting a little hackneyed again. How about Mart-K-Sears, as in The Three Mart-K-Sears? Or maybe Mouse-K-Sears? Em-Aye-Cee, Kay-Ee-Wye… Uh-oh. I see another merger coming.
But if not the name, maybe this merger will come with interesting subnames. For example, K-Mart sells Martha Stewart products, and Sears recently purchased Land's End. So combine these two together and the result is Martha's End. Or maybe we will fix our houses with Martha Stewart Craftsman tools or wash our clothes in our Martha Kenmore washer. Or maybe call the store K'Mart in honor of Apostrophe, one of Sear's product lines. Or how about the Sears Tower? Paint that blue and get The Blue Tower, or the Blue Light Tower. That won't work. The tallest building in the US is the Great Tower of Chicago, not the Sears Tower, because Sears no longer owns it, and so Sears can't paint it blue.
Of course none of this will happen. We will go to our Sears and K-Marts as always, although we may see Craftsman Tools in K-Mart or Martha Stewart products in Sears, and we may see a host of Sears outside the malls. But remember that a titanic merger occurred today between two retail giants. Let's hope that's titanic as in colossal instead of as in blub, blub, blub.
2004/11/16
Flipping Digits
Yesterday my van's mileage was 99982 or something. I drove to work, and then when I went out to go home at night, the van's odometer stared me in the face with 100000. Yes, the van's odometer flipped from 9s to 0s, and the reading added a digit. I have seen the flip occur on a couple of other cars that I have owned.
Flipping digits happen because of our system of enumeration. Before the flip, everything was at 9s because 9 is the greatest digit, one less than ten. It is one less than the base. When that happens all that has been built up to that point gets cashed in for the raise of a digit on the left, or in this case, an additional digit. In a sense, it is a moment of achievement.
In 2003 I achieved three different Toastmasters awards, namely an Advanced Toastmasters Bronze (ATM-B), a Competent Leader (CL) award, and a Competent Toastmaster (CTM) award. This happened because I had two or three manuals each with about two or three speeches to do. I completed all of these that year, and like the 9s on the odometer, I flipped a huge collection of achievements.
Now I am at all zeroes, trying to start all over again. That is what life is all about. Reach an achievement or group of achievements, then start all over again on your next journey. When was the last time you flipped zeroes in your life?
Flipping digits happen because of our system of enumeration. Before the flip, everything was at 9s because 9 is the greatest digit, one less than ten. It is one less than the base. When that happens all that has been built up to that point gets cashed in for the raise of a digit on the left, or in this case, an additional digit. In a sense, it is a moment of achievement.
In 2003 I achieved three different Toastmasters awards, namely an Advanced Toastmasters Bronze (ATM-B), a Competent Leader (CL) award, and a Competent Toastmaster (CTM) award. This happened because I had two or three manuals each with about two or three speeches to do. I completed all of these that year, and like the 9s on the odometer, I flipped a huge collection of achievements.
Now I am at all zeroes, trying to start all over again. That is what life is all about. Reach an achievement or group of achievements, then start all over again on your next journey. When was the last time you flipped zeroes in your life?
2004/11/14
Sitting Next to your Preferred One
I recently came up with an interesting mathematical puzzle today. It is based on some of these conventions and dinner parties that I go to. The problem is this. There is a big banquet at the end of the convention. There is a special someone that you want to sit next to. Perhaps you're in love with this person. Perhaps this person has the key to your next job. Perhaps this person is simply someone you like to sit next to. We will call this person Connie (for "convention").
Most typical banquets feature some 10-20 tables seating 10 each, for a total of 100-200 banqueters. You know that Connie is going to appear at this banquet. So when do you sit down? You don't want to be the first to sit down, as then you have no control over who sits next to you. It's whoever wants to sit next to you, and that might not be Connie. You don't want to be the last person, either. Then there will only one seat left, and that is then yours, and you have no control over who is sitting there either.
The optimal solution is to sit somewhere in the middle, but where? I will measure this by the percentage of people who have seated by the time you choose your seat.
To illustrate this problem, I will assume that everyone is seated in one big circle instead, arbitrarily large. Then you want to get into one of the two seats next to Connie. Suppose you choose time x to sit down. Then the probability is x that Connie is already seated. In that case, the probability that you can sit next to her is 1-x2, as x2 is the probability that both seats are occupied (for an infinite circle - for a finite set, replacement needs to be taken into account). So this makes a term x(1-x2). In the 1-x chance that Connie is not seated, the probability is near zero that she will sit next to you (unless she is attracted to you, in which case it is certain she will sit next to you, but I am not assuming that is the case; also this assumes an infinite circle or strip of seats). Therefore the probability of getting a seat next to her is x(1-x2). The method here is to differentiate and set equal to zero, and solve for x. When you do that, you get the optimal x to be the square root of 1/3, which is about 0.577. So this mean you will wait until 57% of the people are seated, then you will go in and sit down.
This would make for an interesting problem to work out. I have assumed an infinite strip, but what happens in finite cases? The size of the tables makes a difference; if there are 10 to a table, then Connie can sit anywhere at that table and you can still get to her table. Some seats may be more valuable than others; e.g., next to her rather than across the table from her. And what if you want to sit next to a group of people, and what if the people them cluster into groups or cliques? And once someone works out all those cases, are they prepared to use it at a real banquet?
Stay tuned.
I recently came up with an interesting mathematical puzzle today. It is based on some of these conventions and dinner parties that I go to. The problem is this. There is a big banquet at the end of the convention. There is a special someone that you want to sit next to. Perhaps you're in love with this person. Perhaps this person has the key to your next job. Perhaps this person is simply someone you like to sit next to. We will call this person Connie (for "convention").
Most typical banquets feature some 10-20 tables seating 10 each, for a total of 100-200 banqueters. You know that Connie is going to appear at this banquet. So when do you sit down? You don't want to be the first to sit down, as then you have no control over who sits next to you. It's whoever wants to sit next to you, and that might not be Connie. You don't want to be the last person, either. Then there will only one seat left, and that is then yours, and you have no control over who is sitting there either.
The optimal solution is to sit somewhere in the middle, but where? I will measure this by the percentage of people who have seated by the time you choose your seat.
To illustrate this problem, I will assume that everyone is seated in one big circle instead, arbitrarily large. Then you want to get into one of the two seats next to Connie. Suppose you choose time x to sit down. Then the probability is x that Connie is already seated. In that case, the probability that you can sit next to her is 1-x2, as x2 is the probability that both seats are occupied (for an infinite circle - for a finite set, replacement needs to be taken into account). So this makes a term x(1-x2). In the 1-x chance that Connie is not seated, the probability is near zero that she will sit next to you (unless she is attracted to you, in which case it is certain she will sit next to you, but I am not assuming that is the case; also this assumes an infinite circle or strip of seats). Therefore the probability of getting a seat next to her is x(1-x2). The method here is to differentiate and set equal to zero, and solve for x. When you do that, you get the optimal x to be the square root of 1/3, which is about 0.577. So this mean you will wait until 57% of the people are seated, then you will go in and sit down.
This would make for an interesting problem to work out. I have assumed an infinite strip, but what happens in finite cases? The size of the tables makes a difference; if there are 10 to a table, then Connie can sit anywhere at that table and you can still get to her table. Some seats may be more valuable than others; e.g., next to her rather than across the table from her. And what if you want to sit next to a group of people, and what if the people them cluster into groups or cliques? And once someone works out all those cases, are they prepared to use it at a real banquet?
Stay tuned.
2004/10/03
Northwestern beats Ohio State
I am not much of a fan on football, and regard it as irritating when it bombs out news and other programs on TV. But I am a graduate alumnus of Northwestern University, back in a day when I attended all the football games in the early 1970s. So I always follow the exploits of Northwestern's football team every year. To me they are one of the most exciting teams to watch. They have been involved in more cliffhangers and heartstoppers than any other team I can think of in any sport. Their cliffhangers include a rallying 17-16 victory over Michigan in which the winning field goal was scored with only a minute and a half to play, and where the first attempt at this field goal was ruled invalid by a referee, and a game where Wisconsin led by 30-27 near the end, and, for some reason trying to extend that score in the final few minutes, instead fumbled and allowed Northwestern to score and win. They would have been better off running out the clock.
This weekend's game with Ohio State, the big bad bucks (eyes) from Columbus, was one such example. I did not expect it. This was one of Ohio State's better years. They were Number 7 in the nation. This was not one of Northwestern's better years, having lost a bunch of games. I expected a slaughter. Instead, Northwestern kept up with Ohio State, not letting them score and scoring themselves on occasion, and even built up a lead early in the fourth quarter. Then Ohio State scored a touchdown and a field goal to tie it. Maybe they were going to win after all. The game ended with a tie, however.
So a sudden death overtime was played. Here is a summary of the plays, because I think they are brief and almost poetic:
Ohio State rushes 3 yards to the NW 21.
Ohio State incomplete pass to the left.
Ohio State incomplete pass to the right.
Ohio State tries field goal: FAILED.
Northwestern rushes 1 yard to OS 24.
Northwestern rushes 21 yards to OS 3.
Northwestern rushes 2 yards to OS 1.
Northwestern rushes 1 yard: TOUCHDOWN!
And that's the way the ball bounces. Maybe Northwestern will win a few more like that this season.
This weekend's game with Ohio State, the big bad bucks (eyes) from Columbus, was one such example. I did not expect it. This was one of Ohio State's better years. They were Number 7 in the nation. This was not one of Northwestern's better years, having lost a bunch of games. I expected a slaughter. Instead, Northwestern kept up with Ohio State, not letting them score and scoring themselves on occasion, and even built up a lead early in the fourth quarter. Then Ohio State scored a touchdown and a field goal to tie it. Maybe they were going to win after all. The game ended with a tie, however.
So a sudden death overtime was played. Here is a summary of the plays, because I think they are brief and almost poetic:
Ohio State rushes 3 yards to the NW 21.
Ohio State incomplete pass to the left.
Ohio State incomplete pass to the right.
Ohio State tries field goal: FAILED.
Northwestern rushes 1 yard to OS 24.
Northwestern rushes 21 yards to OS 3.
Northwestern rushes 2 yards to OS 1.
Northwestern rushes 1 yard: TOUCHDOWN!
And that's the way the ball bounces. Maybe Northwestern will win a few more like that this season.
2004/09/20
Google Test
Sooner or later, I will retire from my present job and so will want to get another job, as I am not ready to sit outside every day watching the leaves flutter. So I will make out job applications and write resumes. Well today I saw what could be the most interesting job application of them all, Google's. It wa in my copy of Communications, the primary periodical of the Association of Computing Machinery, of which I am a member. OK, Google, you can spider this and everyone can Google what I say all over the place. But Google has really stepped out of the box. In fact, they have stepped out of a googol boxes. They have constructed the Google Labs Aptitude Test, or GLAT. It is a series of math and word puzzles, along with some essay and pictorial questions concering Google the company itself. It finally concludes by asking what the applicant would do if he applied to Google.
A most interesting test. If job applications had looked like this earlier in my life, I would have gotten more job offers than I have had, since this was the thing I was really good at. But wouldn't this deny to the Google people things they really need to know such as work history? Do they really need to know that? What of the work history? What does that say about whether the applicant will do in the present job? Perhaps this thing could come out more in the interview, when the applicant is given the opportunity to provide details. But I don't really think a work history on an application really helps the interviewers. However, a test like Google's may very well pick out those people who would work well at Google. Something good's going on with Google. Over and over again, they have come up with things that have really improved the worth of the web: language translating (although this is somewhat faulty), search news, search newsgroups, and search places to shop. Every one is a blockbuster success. So they must have some brainy guys and gals working for them, and I think Google is trying to get more such people. However, this test is amenable to cheating, but I still think it is a step in the right direction. Other employers, take note. Change your job search procedures, and watch your profits soar!
A most interesting test. If job applications had looked like this earlier in my life, I would have gotten more job offers than I have had, since this was the thing I was really good at. But wouldn't this deny to the Google people things they really need to know such as work history? Do they really need to know that? What of the work history? What does that say about whether the applicant will do in the present job? Perhaps this thing could come out more in the interview, when the applicant is given the opportunity to provide details. But I don't really think a work history on an application really helps the interviewers. However, a test like Google's may very well pick out those people who would work well at Google. Something good's going on with Google. Over and over again, they have come up with things that have really improved the worth of the web: language translating (although this is somewhat faulty), search news, search newsgroups, and search places to shop. Every one is a blockbuster success. So they must have some brainy guys and gals working for them, and I think Google is trying to get more such people. However, this test is amenable to cheating, but I still think it is a step in the right direction. Other employers, take note. Change your job search procedures, and watch your profits soar!
2004/09/15
Woops! - Ladies Chain
Today I looked at the mathematical structure of contra dancing. That link to "mathematical structure" refers to an article I wrote for my mathematics page. It shows how the mathematical structure of contra dancing is like the mathematical structure of changing a mattress, and it ends with a quilt based on contra dancing patterns.
One of the moves of contra dancing is "ladies chain". This is a step where the two ladies in a foursome come to the center and allemande around, going to the opposite side, whereupon the opposite man twirls them around 360 degrees. The result is that the two ladies have switched position, while the two men stay the same. I found an error, or at least a questionable point, in my paper, which makes for an interesting conundrum or paradox.
The part of mathematics that I relate contra dancing to is group theory. A group is a set with an operation (as plus or times) such that the group is closed (adding or multiplying group elements always results in group elements, is associative ( (x*y)*z=x*(y*z) ), has an identity element, as 1, where 1 times anything is that same thing again, and inverses, so that for each a there is an a' such that a*a' = 1. Some operations are easily seen to be associative. For example, let x, y, and z be moves on a Rubik's Cube. then (x*y)*z and x*(y*z) both mean do x, then do y, and then do z, with the only difference being a trivial linguistic difference. So therefore the Rubik's cube group is associative.
So I thought surely contra dancing moves are associative. After all, (x*y)*z and x*(y*z) both mean dance x, then dance y, then dance z. So the two should be the same. No. They are not. It turns out that if y is ladies chain, and x switches the men and women around, then the two are different!
I will explain this in a sequel to my contra dance article, but the idea is this. Imagine a foursome in a square, and from left to right top, then from left to right on the bottom, label the dancers A, B, C, and D, in positions 1, 2, 3, and 4. Then A and D are ladies, and B and C are men. If they do a ladies chain, then A and D trade places. These are in places 1 and 4. But suppose they quarter turn left first. Then the women are in 2 and 3, and ladies chain trades 2 and 3 instead. This means that in (x*y)*z, then y trades 1 and 4, while in x*(y*z), y trades 2 and 3. The definition of y depends on the grouping of the terms. This results in the non-associativity.
I emailed a colleague about this, Larry Copes. He told me that a ladies chain when the ladies are in positions 2 and 3 is not often seen. I thought about it. It is a mirror image of the usual one! It violates the principle of "lady on the right". So most contra dances seen on dance floors do not have such ladies chains. So as far as movements on the dance floor are concerned, they are associative. But that is not good enough for a mathematical group. There one should be able to take any two elements and multiply them. I suppose the way to handle this is to regard ladies chain and gypsy once-and-a-half (which switches ladies 2 and 3) as the same mathematical group element. Then the group of contra dancing is D4, as I say in my article.
One of the moves of contra dancing is "ladies chain". This is a step where the two ladies in a foursome come to the center and allemande around, going to the opposite side, whereupon the opposite man twirls them around 360 degrees. The result is that the two ladies have switched position, while the two men stay the same. I found an error, or at least a questionable point, in my paper, which makes for an interesting conundrum or paradox.
The part of mathematics that I relate contra dancing to is group theory. A group is a set with an operation (as plus or times) such that the group is closed (adding or multiplying group elements always results in group elements, is associative ( (x*y)*z=x*(y*z) ), has an identity element, as 1, where 1 times anything is that same thing again, and inverses, so that for each a there is an a' such that a*a' = 1. Some operations are easily seen to be associative. For example, let x, y, and z be moves on a Rubik's Cube. then (x*y)*z and x*(y*z) both mean do x, then do y, and then do z, with the only difference being a trivial linguistic difference. So therefore the Rubik's cube group is associative.
So I thought surely contra dancing moves are associative. After all, (x*y)*z and x*(y*z) both mean dance x, then dance y, then dance z. So the two should be the same. No. They are not. It turns out that if y is ladies chain, and x switches the men and women around, then the two are different!
I will explain this in a sequel to my contra dance article, but the idea is this. Imagine a foursome in a square, and from left to right top, then from left to right on the bottom, label the dancers A, B, C, and D, in positions 1, 2, 3, and 4. Then A and D are ladies, and B and C are men. If they do a ladies chain, then A and D trade places. These are in places 1 and 4. But suppose they quarter turn left first. Then the women are in 2 and 3, and ladies chain trades 2 and 3 instead. This means that in (x*y)*z, then y trades 1 and 4, while in x*(y*z), y trades 2 and 3. The definition of y depends on the grouping of the terms. This results in the non-associativity.
I emailed a colleague about this, Larry Copes. He told me that a ladies chain when the ladies are in positions 2 and 3 is not often seen. I thought about it. It is a mirror image of the usual one! It violates the principle of "lady on the right". So most contra dances seen on dance floors do not have such ladies chains. So as far as movements on the dance floor are concerned, they are associative. But that is not good enough for a mathematical group. There one should be able to take any two elements and multiply them. I suppose the way to handle this is to regard ladies chain and gypsy once-and-a-half (which switches ladies 2 and 3) as the same mathematical group element. Then the group of contra dancing is D4, as I say in my article.
Hurricanes Hurricanes and more Hurricanes
I have not talked too much about hurricanes lately, but this has been some season. Since early July, I have been tracking down some hurricane or tropical storm somewhere, even if it is only in modelspace, such as the infamous SUUSI Hurricane that ruined SUUSI this year by striking Virginia Tech with 10 inch rains and 50 mph winds on its third day, and also that did not exist at all. It was a mere figment of modelspace. Some runs of the Global Forecasting System (GFS) showed this hurricane striking Charleston, SC and hitting western Virginia, but after two or three days, it completely disappeared from the runs and we had beautiful weather for SUUSI.
But most of the other storms I have been tracking have been real storms that have caused some real trouble. Charley and Frances X-ed out Florida with their tracks, and now the Gulf Coast is being hit by Ivan the Terrible as I speak. It's hurricane after hurricane after hurricane, Alex, Bonnie, Charley, Frances, Gaston, Ivan, and Jeanne, plus Karl and Lisa in modelspace. Gaston already has given us the second worst storm that I can remember here, and it was a mere tropical storm.
So the question is, will Ivan and Jeanne strike here? A Virginia DOT meteorologist says no. Neither will affect us. The forecaster at WxRisk.com also says that both will miss. He says Jeanne will be a Florida hurricane. Certainly I don't think Ivan will strike here. He is going straight for the Great Smoky Mountains, and there he will die. He may give us some flung-out spiral arm rain, as Frances did. But that's all. But what about Jeanne? Although WxRisk thinks this is a Gulf hurricane, MillenniumWeather thinks it's headed for the Carolinas. What do the models say?
No model goes out far enough to see where it will strike, except GFS. They do show her approaching North Carolina, but no farther than that. GFS does show what happens to her, and this is really peculiar, almost comical. GFS says that Jeanne will hit Florida twice. After Charley, Francis, and Ivan, this will make for five hurricane strikes this season for the beleaguered state, out of only four storms. It shows Jeanne going out in to the Atlantic, approaching the Outer Banks, but then a huge H of a High bombs out of Canada (the season's first cold snap) and stands right in front of Jeanne and says "STOP!". The big H then pushes Jeanne back to where she came from, and then towards the southern tip of Florida. Not only that, but the 18Z run of it shows it being pushed farther than that, into the Gulf of Mexico, where it hits the Yucatan. The idea of a hurricane going backwards seems comical to me. But then when this big beautiful Autumn High finally leaves, the hurricane then turns around and heads east northeast, hitting Florida a second time and then going out to sea in the Atlantic to spend its last days spinning fish. In my opinion, I don't think GFS knows what to make of this tremendous battle between a strong high ridge and a hurricane. I think the strong high will force Jeanne to move west northwest and hit Florida and go into the Gulf, as WxRisk says. But I am still going to watch this storm.
But most of the other storms I have been tracking have been real storms that have caused some real trouble. Charley and Frances X-ed out Florida with their tracks, and now the Gulf Coast is being hit by Ivan the Terrible as I speak. It's hurricane after hurricane after hurricane, Alex, Bonnie, Charley, Frances, Gaston, Ivan, and Jeanne, plus Karl and Lisa in modelspace. Gaston already has given us the second worst storm that I can remember here, and it was a mere tropical storm.
So the question is, will Ivan and Jeanne strike here? A Virginia DOT meteorologist says no. Neither will affect us. The forecaster at WxRisk.com also says that both will miss. He says Jeanne will be a Florida hurricane. Certainly I don't think Ivan will strike here. He is going straight for the Great Smoky Mountains, and there he will die. He may give us some flung-out spiral arm rain, as Frances did. But that's all. But what about Jeanne? Although WxRisk thinks this is a Gulf hurricane, MillenniumWeather thinks it's headed for the Carolinas. What do the models say?
No model goes out far enough to see where it will strike, except GFS. They do show her approaching North Carolina, but no farther than that. GFS does show what happens to her, and this is really peculiar, almost comical. GFS says that Jeanne will hit Florida twice. After Charley, Francis, and Ivan, this will make for five hurricane strikes this season for the beleaguered state, out of only four storms. It shows Jeanne going out in to the Atlantic, approaching the Outer Banks, but then a huge H of a High bombs out of Canada (the season's first cold snap) and stands right in front of Jeanne and says "STOP!". The big H then pushes Jeanne back to where she came from, and then towards the southern tip of Florida. Not only that, but the 18Z run of it shows it being pushed farther than that, into the Gulf of Mexico, where it hits the Yucatan. The idea of a hurricane going backwards seems comical to me. But then when this big beautiful Autumn High finally leaves, the hurricane then turns around and heads east northeast, hitting Florida a second time and then going out to sea in the Atlantic to spend its last days spinning fish. In my opinion, I don't think GFS knows what to make of this tremendous battle between a strong high ridge and a hurricane. I think the strong high will force Jeanne to move west northwest and hit Florida and go into the Gulf, as WxRisk says. But I am still going to watch this storm.
2004/09/07
Funny Hurricanes
Well now what is left of Frances is supposed to strike to the west of Richmond, Virginia, after devastating practically the entire state of Florida. Here's the situation now. There is another storm, Ivan, which is about to cross the Leeward Islands and has made a mess out of Grenada. The models all seem to say that the storm will turn to the north and head towards southern Florida. Not again. Only one model goes beyond this, the GFS, and that one says that the hurricane will follow a trough out into the Atlantic, then when a high goes out past it, it suddenly makes a left turn and plows into, well, at 00Z and 12Z into North Carolina, at 06Z into Nova Scotia, and at 18Z into extreme southeastern Virginia. So this is one to keep a watch of, to see if it will actually do this.
In the meantime I picked up these interesting tidbits about hurricanes from the various message boards and other places:
Ivan is going the wrong way. Russia is east.
Can we just put yellow caution tape along the entire state of Florida?
Hey, when Ivan makes that left turn out in the Atlantic into Virginia or North Carolina, it should put on its turn signal.
There goes the Florida economy for two years.
The Florida State Seminoles at Miami Hurricanes football team got postponed because of a hurricane. That's like a Tampa Bay game being postponed because of raids by buccaneers, a Green Bay game being postponed because the city sent them packing, or a Dallas game being postponed because a bunch of cowboys with their cattle ran onto the field dropping plops. I don't think Frances had any interest in joining the Miami football team.
The funniest of all that I met was when someone reported that NOAA had spotted an area of disturbed weather, a large wave, between the Azores and the Leeward islands, and that there is a chance of this developing into a tropical system. The first reaction of readers to this was "FISH!!!". And then someone displayed a cartoon of a boat with a fisherman on it, reeling in a fish over and over again. The idea of throwing the epithet "FISH" at tropical weather strikes me as being really funny. Of course it is short for "fishspinner", which means a storm that stays out at sea and does little more than spin fish around in circles.
Nevertheless, after experiencing Isabel last year, I never want to encounter any of these storms again.
In the meantime I picked up these interesting tidbits about hurricanes from the various message boards and other places:
Ivan is going the wrong way. Russia is east.
Can we just put yellow caution tape along the entire state of Florida?
Hey, when Ivan makes that left turn out in the Atlantic into Virginia or North Carolina, it should put on its turn signal.
There goes the Florida economy for two years.
The Florida State Seminoles at Miami Hurricanes football team got postponed because of a hurricane. That's like a Tampa Bay game being postponed because of raids by buccaneers, a Green Bay game being postponed because the city sent them packing, or a Dallas game being postponed because a bunch of cowboys with their cattle ran onto the field dropping plops. I don't think Frances had any interest in joining the Miami football team.
The funniest of all that I met was when someone reported that NOAA had spotted an area of disturbed weather, a large wave, between the Azores and the Leeward islands, and that there is a chance of this developing into a tropical system. The first reaction of readers to this was "FISH!!!". And then someone displayed a cartoon of a boat with a fisherman on it, reeling in a fish over and over again. The idea of throwing the epithet "FISH" at tropical weather strikes me as being really funny. Of course it is short for "fishspinner", which means a storm that stays out at sea and does little more than spin fish around in circles.
Nevertheless, after experiencing Isabel last year, I never want to encounter any of these storms again.
2004/09/04
Tough Hurricane Names
Ray McAllister of the Richmond Times-Dispatch came up with an interesting point about hurricane names. They're too nice for things that destroy buildings and lives with wind and rain. He says we don't need a Hurricane Frances, because Frances sounds like someone you would have tea with. This Frances, he says, is coming for no tea. Perhaps people would listen if it were Hurricane Fidel instead. Ray also suggests Hitler, Genghis Khan, and Godzilla for hurricane names. His article is at the Times-Dispatch web site. This link may become dead in a couple of weeks. Another blogger, A perfectly Cromulent Blog, also suggests using names like Hitler and Attila.
I note that I have been using names like this for decades to describe storms, but not hurricanes. I use them for snowstorms instead, for the very reasons that Cromulent and McAllister mention - nasty things do not deserve nice names. Here is a list of names I am using. The next snowstorm to strike the Richmond, Virginia area will be Snowstorm Warlock. Here are the previous ones:
Ares
Bluto (Massive winter storm of 1993 March 12)
Crimester
Devil
Evil
Fiend (Ice Storm of 1994)
Gargoyle (Blizzard of 1996)
Hades
Infidel
Jabba
King Cobra (Major Ice Storm of 1998)
Loki
Malo (Blizzard of 2000)
Nix
Ogre
Pouncer
Quagmire
Rat
Snake
Tarantula
Ungodly
Vixen (last 2-inch snowstorm we had)
And here is what's coming up this year:
Warlock (for the first snowstorm of 2004-2005)
X-Outer
Yuk
Zorra
These names should satisfy the criteria of McAllister and Cromulent! I am just hoping that Warlock does not hit us too badly.
I note that I have been using names like this for decades to describe storms, but not hurricanes. I use them for snowstorms instead, for the very reasons that Cromulent and McAllister mention - nasty things do not deserve nice names. Here is a list of names I am using. The next snowstorm to strike the Richmond, Virginia area will be Snowstorm Warlock. Here are the previous ones:
Ares
Bluto (Massive winter storm of 1993 March 12)
Crimester
Devil
Evil
Fiend (Ice Storm of 1994)
Gargoyle (Blizzard of 1996)
Hades
Infidel
Jabba
King Cobra (Major Ice Storm of 1998)
Loki
Malo (Blizzard of 2000)
Nix
Ogre
Pouncer
Quagmire
Rat
Snake
Tarantula
Ungodly
Vixen (last 2-inch snowstorm we had)
And here is what's coming up this year:
Warlock (for the first snowstorm of 2004-2005)
X-Outer
Yuk
Zorra
These names should satisfy the criteria of McAllister and Cromulent! I am just hoping that Warlock does not hit us too badly.
Ivan is in the act
There are now two storms out there: Frances and Ivan. Frances has nearly, but not quite, stalled just before hitting Fort Pierce, Florida. It now is forecast to go out into the Gulf of Mexico, reenter at Apalachicola, and come up Alabama and Tennessee, going by Memphis, Nashville, and Indianapolis. It has stalled so much now that some of the models, notably GFS, UKMET, and CMC have gone to the east, threatening to hit the western Virginia mountains. If that happens, Richmond will get massive river flooding, and it is already recovering from flooding from 11 inches of rain from a mere tropical storm Gaston. So we will have to wait for that.
But Frances has so occupied the attention of broadcasters and weather people that not a one is mentioning Ivan at all. Gary Gray does not mention it at all, and some of the models are suggesting this could be another Frances. So I will give my Ivan analysis after looking at the models.
Several models are calling for Ivan to go to the north, and follow the same track as Frances, including UKMET, NOGAPS, and GFDL. However, they take it only to the Bahamas before quitting. The only model that goes further is GFS, which goes to 16 days, but this model poofs the storm. After it gets to Puerto Rico, it just simply dissolves into a mess of other clouds. So what do you do when the models strongly suggest one thing, but the only model that will tell the full story is telling something different? I looked at the high pressure systems. There is a big one to the north. That's the one giving us the good weather this week. It is supposed to move off the coast, allowing Frances to take a more northeasterly track. Another high will come in from the US Midwest. In between will be a trough established by Francis and a couple of other non-tropical storms, and I am afraid that Ivan will go up this trough. In other words, it will come up to Florida, then veer off to the north and east and possibly hit the Carolinas and Virginia. It may not be as strong as Francis, but I certainly don't want that to happen. I will have to wait until the time gets to where the short models will pick up landfall, or GFS decided to realize the storm and tell us how it is going to go.
But Frances has so occupied the attention of broadcasters and weather people that not a one is mentioning Ivan at all. Gary Gray does not mention it at all, and some of the models are suggesting this could be another Frances. So I will give my Ivan analysis after looking at the models.
Several models are calling for Ivan to go to the north, and follow the same track as Frances, including UKMET, NOGAPS, and GFDL. However, they take it only to the Bahamas before quitting. The only model that goes further is GFS, which goes to 16 days, but this model poofs the storm. After it gets to Puerto Rico, it just simply dissolves into a mess of other clouds. So what do you do when the models strongly suggest one thing, but the only model that will tell the full story is telling something different? I looked at the high pressure systems. There is a big one to the north. That's the one giving us the good weather this week. It is supposed to move off the coast, allowing Frances to take a more northeasterly track. Another high will come in from the US Midwest. In between will be a trough established by Francis and a couple of other non-tropical storms, and I am afraid that Ivan will go up this trough. In other words, it will come up to Florida, then veer off to the north and east and possibly hit the Carolinas and Virginia. It may not be as strong as Francis, but I certainly don't want that to happen. I will have to wait until the time gets to where the short models will pick up landfall, or GFS decided to realize the storm and tell us how it is going to go.
2004/09/01
Hurricane Frances Update
Hurricane Frances has turned into a real cliffhanger, like a 13-inning 7th game of a World Series or the 2000 Presidential election. It has even been a little weird. The Global Forecasting System (GFS) showed the storm coming into Brunswick, Georgia, or thereabouts, continuing to the northwest, and then splitting up into two storms! One of them heads for Kentucky and Ohio, west of the Appalachians, and the other goes east of the Appalachians, into western Virginia. In Richmond, it gives us a glancing blow, much like Hugo did. The storm reunites somewhere in the Great Lakes.
The hurricane has stayed on a westerly course, with the longitude increasing about 3-4 times as fast as the latitude, and south of the course predicted by the National Hurricane Center. That course was going to go to Jacksonville, FL, but then it moved to Daytona Beach, and then to the Kennedy Space Center, and now back more towards Daytona again. However, the GFS and GFDL models have indicated all day long a hit at Hardeeville, SC, and then a track to the north northeast towards Richmond. Of course I don't want this to happen. I am not too concerned about the wind, since the NHC reports indicate that although the storm is producing140 mph winds, they quickly go down to about 80 mph at 60 miles inland and 12 hours all the way down to 30 mph. But it would throw about 2-10 inches of rain here in Richmond, and we already had 4-14 inches from upstart Gaston, which was "only" a measly little tropical storm.
Now tonight the GFS and GFDL has been joined by all of the BAM models, including BAM-H and BAM-G, so now the computer models graph on Weather Underground looks like a split, with some models heading to the Kennedy Space Center and some heading towards Savannah, GA and Hardeeville, SC. This is making this storm a cliffhanger. Which way is it going to go? Will it follow GFS, or will it follow UKMET, which up to now has been pretty steady? I of course hope that the UKMET and NOGAPS are right. I imagine that the people in Florida hope that GFS is right. We will have to watch the high and the storm really closely the next few days. The people from Fort Pierce to Jacksonville, FL need to keep a close eye on the storm, and so do the people near the Carolina and Virginia coasts. The next two days will tell the story.
The hurricane has stayed on a westerly course, with the longitude increasing about 3-4 times as fast as the latitude, and south of the course predicted by the National Hurricane Center. That course was going to go to Jacksonville, FL, but then it moved to Daytona Beach, and then to the Kennedy Space Center, and now back more towards Daytona again. However, the GFS and GFDL models have indicated all day long a hit at Hardeeville, SC, and then a track to the north northeast towards Richmond. Of course I don't want this to happen. I am not too concerned about the wind, since the NHC reports indicate that although the storm is producing140 mph winds, they quickly go down to about 80 mph at 60 miles inland and 12 hours all the way down to 30 mph. But it would throw about 2-10 inches of rain here in Richmond, and we already had 4-14 inches from upstart Gaston, which was "only" a measly little tropical storm.
Now tonight the GFS and GFDL has been joined by all of the BAM models, including BAM-H and BAM-G, so now the computer models graph on Weather Underground looks like a split, with some models heading to the Kennedy Space Center and some heading towards Savannah, GA and Hardeeville, SC. This is making this storm a cliffhanger. Which way is it going to go? Will it follow GFS, or will it follow UKMET, which up to now has been pretty steady? I of course hope that the UKMET and NOGAPS are right. I imagine that the people in Florida hope that GFS is right. We will have to watch the high and the storm really closely the next few days. The people from Fort Pierce to Jacksonville, FL need to keep a close eye on the storm, and so do the people near the Carolina and Virginia coasts. The next two days will tell the story.
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