Tag: New Orleans

Katrina Shifts West Again

Earlier this afternoon, before the Hurricane Center issued its 5:00 PM update on Katrina, I sent an instant message to my friend Bob at FSU. I told him I was putting up a dollar that Katrina’s forecast would be shifted left.

It was.

I had the exact same feeling tonight… and NHC moved it again.

Maybe feeling is the wrong word, because this isn’t intuition or guesswork. I could see signs. The storm was refusing to make the predicted right turn. In fact, it was traveling south of west.

To the north there was some sort of convergence. Feeder bands from the hurricane were meeting something moving from the north. Clouds were showing up bright white – a sign they were developing vertically.

Whatever it was to the north, it would impede that right turn forecast at the Hurricane Center.

I’m sure I’ve said this before, but it’s worth repeating. The best hurricane information is often contained in the forecaster’s technical discussion. These really were meant to be ‘internal use only’ documents, but you can’t do that when you work for the government.

In these the lead forecaster discusses what has gone into the latest forecast package. I’m sure it’s very helpful at NHC after the hurricane season is over or whenever post mortems are done.

I’ll attach tonight’s at the end of this message so you can get a feel for yourself. This one was written by Dr. Lixion Avila, one of NHC’s hurricane specialists. Four of the six specialists are Ph D’s. This is specialized work.

Sometimes, I sense, things are thrown in with the understanding that it’s more than meteorologists reading.

KATRINA IS FORECAST TO MOVE DIRECTLY OVER THE WARM

LOOP CURRENT OF THE GULF OF MEXICO…WHICH IS LIKE ADDING HIGH

OCTANE FUEL TO THE FIRE

No one trained in weather needed that line. Some surface water in the Northern Gulf of Mexico is 90&#17+. Without a doubt, this is a dangerous storm and getting more dangerous by the minute.

My biggest fear is Katrina will head west of New Orleans and strike the coast there. A Category 4 storm (which is the forecast) in that location would be devastating. For a variety of reasons, New Orleans is incredibly vulnerable and a strike like that would be the worst of all possible scenarios!

IT IS WORTH NOTING THAT THE GUIDANCE SPREAD HAS DECREASED AND MOST OF THE RELIABLE NUMERICAL MODEL TRACKS ARE NOW CLUSTERED BETWEEN THE EASTERN COAST OF LOUISIANA AND THE COAST OF MISSISSIPPI. THIS CLUSTERING INCREASES THE CONFIDENCE IN THE FORECAST.

Man, I hope he’s right. So far, this storm has been poorly forecast&#185. And, recently, each succeeding forecast has moved the path farther left… farther to the west.

Today alone, the center of the forecast path for landfall has moved a few hundred miles.

More on Katrina later. We have a few days with this storm at sea before the real trouble begins.

&#185 – By poorly forecast, I don’t mean NHC did a bad job. I mean the ability to forecast this particular storm was beyond the capabilities of science at the moment. Something’s there that no one can get a handle on. That we don’t know exactly why it went wrong is as troubling as it going wrong… maybe more.

Continue reading “Katrina Shifts West Again”

Ivan – I Worry

I am worried the official Hurricane Center track on Ivan is too far to the east. I’m especially worried about New Orleans, the most susceptible city in the United States should a major hurricane strike,

We’ll see what they say at 5:00 PM. Change is good.

Watching Charley

Tonight, at the end of the news, Ann kidded that I’d be up all night watching Hurricane Charley. That really isn’t far from the truth. I’ve already taken a few peeks.

I’m just in awe of this storm. And Charley is different than most in that it will be very watchable with high resolution precision from the comfort of home.

The Internet has taken nearly all the information I use and made it available to anyone for free. It’s pretty spectacular. I don’t think there’s any other discipline that has so much of its raw data available, and most of it in real time. It wasn’t that many years ago that radar and other data were only available by subscription.

The best view of Charley has been from the Key West NEXRAD. NEXRAD stands for ‘next generation radar,’ but it’s commonly referred to as WSR88D (a reference to its contract designation) – probably because that’s nerdier.

With its incredible electronics and computer assistance, the radar sees precipitation nearly 300 miles out. I was able to look at Charley while he was on the far side of Cuba. Even at that distance the eye was easily seen. By animating a series of images, the counterclockwise rotation was also visible.

Now that Charley is north of Cuba, and back in the open water, I’m looking for signs that he might have weakened over land. At this moment the eye is slightly elongated. It’s not enough to signal disintegration or even significant weakening. Actually, at this point, conditions are perfect for re-intensification.

At the Dry Tortugas weather buoy, in the Florida Keys, the barometer is falling and the wind picking up. It’s only sustained at 20 knots now, but that will rise. The water temperature is about 87&#187.

If you had been clinging to the buoy for the past few hours you would have noticed the sea coming up with more wave action. Strong thunderstorms accompanied by gusty winds would move through sporadically. You would have seen rapidly moving clouds, but it would have been difficult, if not impossible, to realize they were part of a rotating pattern.

As far as I can tell, hurricane hunter aircraft have been flying through the storm tonight, even as it was very close to Cuba.

THE LATEST MINIMUM CENTRAL PRESSURE REPORTED BY AN AIR FORCE RESERVE

HURRICANE HUNTER AIRCRAFT IS 973 MB…28.73 INCHES.

STORM SURGE FLOODING OF 10 TO 14 FEET IS PROBABLY BEING EXPERIENCED

ALONG THE SOUTH COAST OF CUBA NEAR AND EAST OF WHERE THE CENTER

MADE LANDFALL. THE SURGE SHOULD GRADUALLY SUBSIDE AS THE HURRICANE

MOVES AWAY FROM CUBA.

STORM SURGE FLOODING OF 2 TO 4 FEET…ALONG WITH LARGE AND DANGEROUS

BATTERING WAVES…CAN BE EXPECTED IN THE FLORIDA KEYS. STORM SURGE

FLOODING OF 10 TO 13 FEET IS ALSO POSSIBLE NEAR AND SOUTH OF THE

WHERE THE CENTER CROSSES THE FLORIDA WEST COAST.

When you consider the elevation of Key West, you realize a 2-4 foot forecast for storm surge is a big deal. The elevation of the airport is only 15 feet above sea level. A lot of the Key West coastline and other keys and islets will be under water.

A storm surge of 10-13 feet in the Tampa Bay area would be a natural disaster of huge proportions. There’s a large population near the coast who have never experienced a storm like this before. Many of the residents are older and evacuation will be difficult. Hurricane experts consider the area from Tampa Bay south to be our second most susceptible area after New Orleans.

Storm surge can be the big killer in hurricanes. In the Hurricane of 1900 all of Galveston was under water for a time!

For locals, any reference to “the storm” is obvious. If someone says a house survived the storm, there is no doubt it predates Sept. 8, 1900.

If people say they had family who died or survived the storm, there is no doubt that they are referring to a family history that goes back more than 100 years.

For in Galveston, “the storm” always refers to the hurricane that tore across Galveston on Sept. 8, 1900, and left the city in ruins.

Those who managed, either by sheer luck or the grace of God, to survive the storm faced the challenge of moving forward. – Heidi Lutz, Galveston County Daily News

I’m waiting for the next run of the GFDL computer model to come out and then I’m off to bed. Even with the heavy iron of computing thrown at these models, we’re already 7 hours 30 minutes past the initialization data, and it’s not available. I’m told there’s so much traffic trying to download the numbers that they’re just dibbling out. I hope the Hurricane Center has a more direct pipe.

Blogger’s note – I have links on the right side of this page which lead to updated hurricane information from the Tropical Prediction Center.

I’m Going to Say Something Nice About Microsoft

My friend Farrell grew up in New Orleans. His mom, a widow, still lives there. Over the past few years she has begun to enjoy using a computer, and to celebrate that, Farrell got her a very nice Compaq laptop.

Of course, as is the case with so many computer users, when things began to spiral out-of-control and she had nowhere to turn. Being in Connecticut, I couldn’t drive over to help.

I had spoken to her over the phone, but it was difficult. She didn’t know where everything was and had a lack of confidence in her own ability to follow my instructions. There had to be a better way.

This afternoon I called her on the phone. Using Microsoft’s Remote Assistance, which is built in to XP, I was able to control her computer from my computer. It was my keyboard which sent the commands to her machine and my mouse which moved the cursor.

The experience wasn’t without problems. We disconnected twice, taking her back to a login screen. But, by and large it worked just fine.

I was able to install the Google toolbar, remove some icons from her desktop, resize her screen to the proper 1024×768 (from the 800×600 it had been set at), add a quick launch toolbar and desktop links to some newspapers she reads.

There is no possible way this could have been done without Remote Assistance. Because of its direct connect nature, it would not have worked had she been behind a firewall or router, as I am. One router is fine. Two is one too many!

There is another benefit as well. As I moved and manipulated things, I could show her what she would have to do when I was gone. Very valuable.

Microsoft hit a home run with this feature, though it’s probably underused.