On the right graphic is a total precipitation map until Hour 93 of the new GFS. It shows over 12 inches hitting much of southeast Louisiana, with a maximum amount of just over 20 inches shown on the extreme bottom right corner of the image.
If the levees keeled over in 2005 with Katrina due to 10 inches of rain (among other factors), imagine what 20 inches of rain in a large Category 2-3 hurricane could do.
I am not saying this will happen, this is only meant as a comparison and should be treated as such.
Andrew
7 comments:
Hey Andrew, did you see what picture the HWRF is painting.... pretty scary for New Orleans...
- RW
Hi Andrew! I know that this is off topic with all of the talk about Isaac, but the Farmer's Almanac Winter Forecast is out! Here it is: Farmer's Almanac Winter Forecast
Looks good for me in SE Michigan in terms of cold and snow! Can't wait for winter:-) Have a good evening!
It certainly would be nice if that forecast panned out- I'm waiting for a good snowstorm myself!
WinterStorm, I like that outlook!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Just I would move the Cold Snowy area SE. We need a storm that dumps 2 feet of snow each!!!!!!!!!!!
How about another January 25-27 Blizzard of 1978? Blizzard of 1978
And to heighten the winter spirit, a few predictions from the Farmer's Almanac:
November: 4th-7th: "Stormy, especially Great Lakes, where snow is possible. Then clearing, colder."
November 28th-30th: "Unsettled weather, with snow, especially Great Lakes"
December 4th-7th: " Turning unsettled, especially Wisconsin, northern Illinois, where heavy wet snow may fall."
December 20th-23rd: "Snow across Midwest, then fair, very cold."
WinterStorm, that sounds cheerful in this time of gloom. Isaac is very bad.
ERN WX, this truly is a gloomy time. I really hope that people evacuated, especially the places that aren't protected by levees. 30-40 inches in 48 hours? That will cause monumental flooding. The NHC should have upgraded Isaac to a hurricane with last night's 11pm advisory. More people would have evacuated because of a Hurricane rather than a Tropical Storm.
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