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Major Hurricane Isaias


WxWatcher007
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Not minimizing this in any way but presentation on IR and radar is degrading as it comes in.   Not going to make much difference though.  At least it is not intensifying right up until landfall.  Jet interaction, trof and vorticity interaction will maximize wind and maximize it well inland as well.  There is little weather once that northern eye wall plows ashore, which it is doing right now.   Not much on the other side of degrading eye.   Looks like a two hour window of the worst of it for a given location along the coast.  Official landfall should take place around 10pm +/- 30 minutes.

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For the EWW issued in FL now. 

EWW is defined to expect winds *sustained* 115 mph (not gusts).

Look at the plot attached.  What are the chances of sustained winds this strong *anywhere* but the immediate coast, say within 5 mi?  Due to friction, sustained winds drop off very, very quickly once inland.  And for a hurricane that is right at the threshold of 115 mph for winds over *water*, you are going to be hard pressed to even see such sustained winds anywhere on land.   

It goes to show how warnings often are overdone and do not account for obvious factors, like how strong a hurricane is, how large or fasting-moving it is. or how far inland locations are.

Objectively, getting winds 115 mph sustained more than a few miles inland at near ground level is practically unheard of more than a few miles inland.  Exceptions would be Andrew, Michael and Camille, but Isaias is no where near any of them.  You can't treat hurricane landfalls as one-size-fits-all.  We have the skill, knowledge, and tech to fine-tune things better and narrow down warning areas these days.

And it is not like people this area of the FL PH are not already warned the wazoo a hurricane is making landfall.  That very fact has already resulted in major action and lock downs, so people are more than prepared.  The word "hurricane" in itself prompts immense action.
 

eww.PNG

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11 minutes ago, nycwinter said:

it did not fall apart as some on this forum were suggesting as it makes landfall..

The pressure did just rise 13mb between the last two recon passes. Not enough time for it to make a huge difference but it’s starting to weaken pretty quickly now. 

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