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End of Hurricane Season - 2007


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CCEA, are you paying close attention to these graphics??

WhatchutalkinaboutWillis.

Yea, I'm watching them pretty close. The 5:00 one looked a little better than the one before. It looked more directly west to me. Of course all bets are off when it hits the Gulf. I remember watching Rita in the Gulf. About a couple days or so before it hit, it was projected to hit Brownsville (WAAY South of here). As it neared, the projected path kept getting farther and farther north. Pretty soon Houston was in the middle of the largest evacuation in American history. Basically the entire population of Galveston and Houston got up and left. We all know what happened next. Rita hopped up the coast and settled on Beaumont as a good place to land. Houston got a little breeze and a few showers. The graphs and charts are great to get youre mind reeling, but they're all "subject to change without notice".

Carl

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Groom,

Is this SLOSH chart updated for each hurricane? In other words is this the current SLOSH for Dean???????????

The SLOSH chart is the average maximum surge values, and reflect a worst case scenario of hurricane storm surge inundation (which includes the addition of an astronomical high tide). It should be noted that the data reflects only stillwater saltwater flooding. It is incumbent upon local emergency management officials to estimate the degree and extent of freshwater flooding, as well as to determine the magnitude of the waves that will accompany the surge.

For New Orleans, it's 28 feet, which was the "panic" level when Katrina was still offshore at Cat-5. As it turned out the surge was less (16-19 feet?) as Katrina was a Cat-3. The SLOSH model computes the water height over a geographical area or basin. The model consists of a set of equations derived from the Newtonian equations of motion and the continuity equation applied to a rotating fluid with a free surface. The equations are integrated from the sea floor to the sea surface. The coastline is represented as a physical boundary within the model domain. Subgrid-scale water features (cuts, chokes, sills and channels), and vertical obstructions (levees, roads, spoil banks, etc.) can be parameterized within the model.

Hope that helps (how info like that can help your peace of mind, I don't know...[;)])

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I am wondering if 12' seas aren't a little conservative????

That's minimum...

Sea State is related to the wind AND the depth of the water; also Dean is small and compact, so the sea state is about right... But I'd bet 15-20 around the eye wall.... When that sucker gets to shallow water.... Well we know what 120 mile an hour winds can do as the water gets shallower up to the coast line. After all, at the coast line, no place to go except UP....

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DEAN as of 1700 Hours..... (that's 5:00 PM for the civilians....)

AN AIR FORCE HURRICANE HUNTER AIRCRAFT HAS BEEN IN THE EYE OF DEAN AND THE DATA SO FAR INDICATE THAT THE MINIMUM PRESSURE HAS BEEN FLUCTUATION BETWEEN 974 AND 979 MB. MAXIMUM WINDS ARE ESTIMATED AT 85 KNOTS. THE CURRENT CONVECTIVE BANDING STRUCTURE AND THE EXPANSION OF THE UPPER-LEVEL OUTFLOW OBSERVED ON SATELLITE IMAGES SUGGEST THAT DEAN IS STRENGTHENING AT THIS TIME. DEAN IS EXPECTED TO CARRY AN UPPER-LEVEL ANTICYCLONE WITH IT...ON ITS WESTWARD TRACK ACROSS THE CARIBBEAN. THIS PATTERN IS CONDUCIVE TO STRENGTHENING. ONCE DEAN REACHES THE WESTERN CARIBBEAN AND MOVES OVER AN AREA OF VERY HIGH OCEAN HEAT...IT COULD BECOME A CATEGORY FOUR HURRICANE. THIS IS CONSISTENT WITH THE SHIPS MODEL AND WITH DYNAMICAL
GUIDANCE...MAINLY THE GFDL AND THE HWRF WHICH MAKE DEAN A VERY INTENSE HURRICANE.


DEAN IS MOVING TOWARD THE WEST OR 280 DEGREES AT 20 KNOTS. A STRONG AND DEEP ANTICYCLONE IS FORECAST TO REMAIN ANCHORED NORTH OF DEAN. THIS PATTERN WOULD PROVIDE A CONTINUED WESTWARD STEERING DURING THE NEXT 3 TO 4 DAYS WITH SOME WEST-NORTHWESTWARD COMPONENT AS THE HURRICANE REACHES THE EDGE OF THE HIGH BY DAY FIVE. TRACK MODELS ARE IN OUTSTANDING AGREEMENT BRINGING THE HURRICANE ACROSS THE CARIBBEAN SEA. THIS ADDS CONFIDENCE TO THE TRACK FORECAST.

FORECAST POSITIONS AND MAX WINDS

INITIAL 16/2100Z 14.0N 56.5W 85 KT
12HR VT 17/0600Z 14.4N 59.7W 90 KT
24HR VT 17/1800Z 15.0N 63.5W 95 KT
36HR VT 18/0600Z 15.5N 67.0W 100 KT
48HR VT 18/1800Z 16.0N 70.5W 110 KT
72HR VT 19/1800Z 17.5N 78.0W 115 KT
96HR VT 20/1800Z 19.5N 84.5W 120 KT
120HR VT 21/1800Z 22.0N 90.5W 90 KT

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Uhhhh hello....I don't think it will be anything nice!!!!

I saw the effects of inland water flooding....during Katrina Lake Pontchartrain inundated Slidell...my hometown....knocked out the entire bridge that links the Northshore of Lake Pontchatrain (I-10 South) Slidell to New Orleans....literally lifted the bridge off it's pilings....what a sight!

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