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re: Hurricane Irma - Spinning Down

Posted on 9/5/17 at 7:15 am to
Posted by Jake88
Member since Apr 2005
79821 posts
Posted on 9/5/17 at 7:15 am to
Isn't there a saying that big, powerful storms go where they want and that direction is generally poleward?
Posted by slackster
Houston
Member since Mar 2009
91836 posts
Posted on 9/5/17 at 7:15 am to
That's one hell of a dropsonde:



215 mph winds found above the surface.
Posted by slackster
Houston
Member since Mar 2009
91836 posts
Posted on 9/5/17 at 7:16 am to
quote:

Isn't there a saying that big, powerful storms go where they want and that direction is generally poleward?




They have a tendency to find the smallest weaknesses in a ridge and take it.
Posted by Duke
Dillon, CO
Member since Jan 2008
36494 posts
Posted on 9/5/17 at 7:17 am to
Nothing obvious. Water is plenty warm to support this sort of hurricane. No apparent shear source.

That being said, Cateogry 5 hurricanes of this intensity often aren't long lived and cycle up and down with eyewall replacement and just the thermodynamics of supporting those winds and structure being really demanding.

All those caveats noted, Irma's got a real possibility of being the longest track five we've observed in the Atlantic basin.
Posted by slackster
Houston
Member since Mar 2009
91836 posts
Posted on 9/5/17 at 7:17 am to
quote:

Now the question remains...is there anything in its path, on the current track, that will weaken it before it hits Florida?





Sure, Hispaniola and Cuba.

Land is really it's only inhibiting factor.
Posted by liz18lsu
Member since Feb 2009
18042 posts
Posted on 9/5/17 at 7:19 am to
Naples, FL checking in.
Posted by Duke
Dillon, CO
Member since Jan 2008
36494 posts
Posted on 9/5/17 at 7:21 am to
quote:

215 mph winds found above the surface


Well don't see that everyday.

The winds are pretty incredible considering the pressure isn't THAT low. Guess the ambient high pressure surrounding her is playing some role and an obvious really tight gradient right by the center.
Posted by slackster
Houston
Member since Mar 2009
91836 posts
Posted on 9/5/17 at 7:24 am to
quote:

Gurus, how long can this bitch keep that kind of intensity?




The longest continued duration in the Atlantic was 78 hours. Most storms fall below Category 5 within 24 hours.
Posted by LanierSpots
Sarasota, Florida
Member since Sep 2010
71016 posts
Posted on 9/5/17 at 7:25 am to
quote:

Isn't there a saying that big, powerful storms go where they want and that direction is generally poleward?



Anything with currents (electrical, water, wind) follow the path of least resistance.


Posted by TigerNAtux
Louisiana
Member since Dec 2007
18622 posts
Posted on 9/5/17 at 7:26 am to
That high pressure ridge in the Atlantic will determine where this thing goes. Any chance it may recede, allowing Irma to go fishing? Pray God it doesn't build.
Posted by Cowboyfan89
Member since Sep 2015
13041 posts
Posted on 9/5/17 at 7:27 am to
So is the cold front we are supposed to be getting around Thursday/Friday the one that is supposed to turn this thing? Seems like they've had that pegged for a week now. Why is there concern over this thing not turning if that is the case?
Posted by oldcharlie8
Baton Rouge
Member since Dec 2012
7849 posts
Posted on 9/5/17 at 7:28 am to
yes
Posted by slackster
Houston
Member since Mar 2009
91836 posts
Posted on 9/5/17 at 7:29 am to
quote:

That high pressure ridge in the Atlantic will determine where this thing goes. Any chance it may recede, allowing Irma to go fishing? Pray God it doesn't build.


Sure there is. A few of the GFS ensembles keep it at sea:



Unlikely scenario at this point, but certainly plausible.
Posted by thegreatboudini
Member since Oct 2008
7184 posts
Posted on 9/5/17 at 7:29 am to
That thing is a monster.
Posted by baldona
Florida
Member since Feb 2016
24180 posts
Posted on 9/5/17 at 7:30 am to
Because they don't know when and where the other fronts will be when they hit Irma.

Hurricanes follow the paths of least resistance, a front is high resistance. So the hurricanes usually goes where the fronts are weakest or non existent. So when the front hits Irma, it's shape will determine Irma's path. It's impossible to predict that this far out.
Posted by dallastiger55
Jennings, LA
Member since Jan 2010
34135 posts
Posted on 9/5/17 at 7:31 am to
Has Disneyworld ever experienced bad hurricane damage? Doesn't look good for it
Posted by Duke
Dillon, CO
Member since Jan 2008
36494 posts
Posted on 9/5/17 at 7:32 am to
quote:

Any chance it may recede, allowing Irma to go fishing? Pray God it doesn't build.


From the models I've seen, it's more finding a window to shoot a gap between the big steering high and one that developes over Mx,Tx, La late in the week. Every single model has this avenue open but the split on where is sitting about Destin to just missing Florida all together.

Hope to see a fish storm but unfortunately the probabilities point to Florida currently. That and the poor Leewards and PR.
Posted by slackster
Houston
Member since Mar 2009
91836 posts
Posted on 9/5/17 at 7:35 am to
quote:

So is the cold front we are supposed to be getting around Thursday/Friday the one that is supposed to turn this thing? Seems like they've had that pegged for a week now. Why is there concern over this thing not turning if that is the case?




A) There really shouldn't be much concern over it failing to turn, at least at this point.

B) That cold front will continue to move, and there is always the possibility it misses Irma, although none of the models suggest it will happen.
Posted by Cosmo
glassman's guest house
Member since Oct 2003
131395 posts
Posted on 9/5/17 at 7:37 am to
Looks like a lot of baws recently heard of the term annular hurricane and are loving throwing it around in this thread
Posted by CarolinaGamecock99
Member since Apr 2015
24812 posts
Posted on 9/5/17 at 7:38 am to
Not looking good for South Carolina either
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