Tropical Storm Fay Model Runs

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boca
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Re: ATL: Invest 92L Model Runs

#761 Postby boca » Wed Aug 13, 2008 9:59 pm

Ed Mahmoud wrote:May be heading North at the end, but the GFDL's 500 meter height fields shows the high building back in, despite what looks like a nearly stationary trough. Positively tilted trough, that remains nearly stationary, but seems to weaken/lose amplitude. The positive tilt would suggest SW flow trying to steer 92L out to sea if it got a bit further North, but the ridge shown building in looks like it will keep 92L moving North, and if it keeps building, back to West of due North.

Complicated.


Don't know if GFDL outer grid 500 mb heights are available on a free web site or not.

At what point does it head north. East of Florida?
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Re: ATL: Invest 92L Model Runs

#762 Postby Recurve » Wed Aug 13, 2008 10:09 pm

BTW, consistent strong south/westerly winds over the keys the last few days. Fowey Rocks has southwest 15, gust 16 k now. Under this regime the steering would be away from SFla, if only this could last. Winds stayed mostly 225-300 degrees at key largo since Aug. 8.
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Re: ATL: Invest 92L Model Runs

#763 Postby Ed Mahmoud » Wed Aug 13, 2008 10:13 pm

boca wrote:
Ed Mahmoud wrote:May be heading North at the end, but the GFDL's 500 meter height fields shows the high building back in, despite what looks like a nearly stationary trough. Positively tilted trough, that remains nearly stationary, but seems to weaken/lose amplitude. The positive tilt would suggest SW flow trying to steer 92L out to sea if it got a bit further North, but the ridge shown building in looks like it will keep 92L moving North, and if it keeps building, back to West of due North.

Complicated.


Don't know if GFDL outer grid 500 mb heights are available on a free web site or not.

At what point does it head north. East of Florida?



Turning almost due North at the end of the 126 hour run. But 500 mb heights suggest it might get trapped before it recurves. It is off the East coast of Florida as a major hurricane at the end. Tropical storm force winds just offshore. if it goes due North after, it would miss Florida and head for the Carolinas.

But speculating what will happen beyond the end of a model, which may not in itself be correct, well, it really is more speculation than anything else. 92L still may not develop, although it is looking better, and I'd think anywhere from the Central Gulf to New England and even Canada has to stay tuned. Plus the extreme Northeast Lesser Antilles, and potentially any of the Greater Antilles.
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#764 Postby MiamiensisWx » Wed Aug 13, 2008 10:14 pm

There are numerous uncertainties. It largely depends on the location of 92L around late Saturday and Sunday. If it is SSE of the southern Florida peninsula, a weaker mid level ridge would still induce a NW/NNW track toward the Miami area. If it is farther east, a slower path farther north would be reasonable. Another crucial variable is the forward movement/speed of the LLC (when we finally observe a well defined one) over the next several days. It also depends on the strength of the ridging and the intensity of 92L. Remember that a deeper TC can still move west, west-northwest, or northwest if stronger ridging is present at the mid/upper levels. The evolution of the Midwest cutoff low and the timing of the amplifying ridge will be important.

It is too early to make definite statements.
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Re: ATL: Invest 92L Model Runs

#765 Postby Sanibel » Wed Aug 13, 2008 10:21 pm

Image
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Re: ATL: Invest 92L Model Runs

#766 Postby Bocadude85 » Wed Aug 13, 2008 10:31 pm

Anyone have the 00z nam loop?
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Re: ATL: Invest 92L Model Runs

#767 Postby Rainband » Wed Aug 13, 2008 10:31 pm

That would be good news for Florida...at least
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Re: ATL: Invest 92L Model Runs

#768 Postby SouthFLTropics » Wed Aug 13, 2008 10:37 pm

Rainband wrote:That would be good news for Florida...at least


What are you referring to here Rainband?
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Re: ATL: Invest 92L Model Runs

#769 Postby boca » Wed Aug 13, 2008 10:38 pm

Bocadude85 wrote:Anyone have the 00z nam loop?


Here it is.

http://www.nco.ncep.noaa.gov/pmb/nwprod ... loop.shtml
Last edited by boca on Wed Aug 13, 2008 10:41 pm, edited 1 time in total.
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Re: ATL: Invest 92L Model Runs

#770 Postby boca » Wed Aug 13, 2008 10:39 pm

SouthFLTropics wrote:
Rainband wrote:That would be good news for Florida...at least


What are you referring to here Rainband?


I think he means that it will take a northerly turn a spare Florida for must part.
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Re: ATL: Invest 92L Model Runs

#771 Postby SouthFLTropics » Wed Aug 13, 2008 10:42 pm

boca wrote:
SouthFLTropics wrote:
Rainband wrote:That would be good news for Florida...at least


What are you referring to here Rainband?


I think he means that it will take a northerly turn a spare Florida for must part.


I've heard about the high building back in though and blocking the northerly motion...As usual with these things there are alot of variables that are going to come into play here and as always timing will be everything...
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Re: ATL: Invest 92L Model Runs

#772 Postby Bocadude85 » Wed Aug 13, 2008 10:44 pm

Thats the 18z gfdl he posted correct?
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Re: ATL: Invest 92L Model Runs

#773 Postby boca » Wed Aug 13, 2008 10:46 pm

Yes it was. When does the 00 GFDL come out?
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#774 Postby Evil Jeremy » Wed Aug 13, 2008 10:47 pm

Shouldn't the new GFS be rolling out now?
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Re: ATL: Invest 92L Model Runs

#775 Postby Bocadude85 » Wed Aug 13, 2008 10:50 pm

New GFDL should be out around 2am I believe
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#776 Postby GeneratorPower » Wed Aug 13, 2008 10:53 pm

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Re:

#777 Postby cheezyWXguy » Wed Aug 13, 2008 11:29 pm

GeneratorPower wrote:It's rolling out.

http://www.nco.ncep.noaa.gov/pmb/nwprod ... el_m.shtml

thats gfs, not gfdl
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#778 Postby Aric Dunn » Wed Aug 13, 2008 11:30 pm

gfs stalls whatever is left near the northern bahamas..
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#779 Postby Aric Dunn » Wed Aug 13, 2008 11:33 pm

it has it doing a loop like jean so far...

http://www.nco.ncep.noaa.gov/pmb/nwprod ... loop.shtml
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Re: ATL: Invest 92L Model Runs

#780 Postby Bocadude85 » Wed Aug 13, 2008 11:34 pm

yup samething it has been doing... I dont think we can really trust the gfs until we have a actual center
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