ATL: GORDON - Post-Tropical

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jlauderdal
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Re: ATL: INVEST 91L - Discussion: 2 PM TWO=70%/90%

#161 Postby jlauderdal » Sun Sep 02, 2018 12:54 pm

PSUHiker31 wrote:I'm a bit disappointed that there wasn't a 12Z HWRF...unless I just can't find it. Guess I'll be waiting another model cycle for it.
hwrf probably spins up a major inside 72 hours :roll:
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Re: ATL: INVEST 91L - Discussion: 2 PM TWO=70%/90%

#162 Postby JPmia » Sun Sep 02, 2018 12:54 pm

and it hasn't hit the Gulf Stream yet.. that usually gives these suckers a little boost.
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Re: ATL: INVEST 91L - Discussion: 2 PM TWO=70%/90%

#163 Postby eastcoastFL » Sun Sep 02, 2018 12:55 pm

Its been very breezy here in palm beach with some heavy thunderstorms since this morning.
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Re: ATL: INVEST 91L - Discussion: 2 PM TWO=70%/90%

#164 Postby Shell Mound » Sun Sep 02, 2018 12:56 pm

The 12Z ECMWF looks to initialise too weakly vs. current trends. It may not be correctly handling the small size of the circulation. This will likely be a weak tropical storm by the time it impacts the FL Keys and South FL. I would estimate 40 to 45 knots, possibly slightly stronger, by that time. The main threat will remain locally copious precipitation over the Keys and southern FL peninsula. None of the global models seems to be handling 91L well in the short term.
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Re: ATL: INVEST 91L - Discussion: 2 PM TWO=70%/90%

#165 Postby MississippiWx » Sun Sep 02, 2018 1:04 pm

Shell Mound wrote:The 12Z ECMWF looks to initialise too weakly vs. current trends. It may not be correctly handling the small size of the circulation. This will likely be a weak tropical storm by the time it impacts the FL Keys and South FL. I would estimate 40 to 45 knots, possibly slightly stronger, by that time. The main threat will remain locally copious precipitation over the Keys and southern FL peninsula. None of the global models seems to be handling 91L well in the short term.


This. I believe the size of the system is difficult for them to digest. Euro with a weak tropical storm into the Northern Gulf.
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Re: ATL: INVEST 91L - Discussion: 2 PM TWO=70%/90%

#166 Postby Aric Dunn » Sun Sep 02, 2018 1:08 pm

Given the nearly complete lack of shear ( despite all the models still showing it) from here to the Gulf and its current organization could see this spin up pretty quick before florida/keys.
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Re: ATL: INVEST 91L - Discussion: 2 PM TWO=70%/90%

#167 Postby eastcoastFL » Sun Sep 02, 2018 1:11 pm

Aric Dunn wrote:Given the nearly complete lack of shear ( despite all the models still showing it) from here to the Gulf and its current organization could see this spin up pretty quick before florida/keys.



Without a defined center are we sure about what its current heading is and how far north into Florida could be effected?
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Re: ATL: INVEST 91L - Discussion: 2 PM TWO=70%/90%

#168 Postby Clearcloudz » Sun Sep 02, 2018 1:12 pm

Aric Dunn wrote:Given the nearly complete lack of shear ( despite all the models still showing it) from here to the Gulf and its current organization could see this spin up pretty quick before florida/keys.


Hey Aric, is it possible the global models are having a hard time with this system because how fairly small system it is. Do you think the hurricane models like the HWRF and HMON will have a different solution.
Last edited by Clearcloudz on Sun Sep 02, 2018 1:15 pm, edited 2 times in total.
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Re: ATL: INVEST 91L - Discussion: 2 PM TWO=70%/90%

#169 Postby JPmia » Sun Sep 02, 2018 1:12 pm

Aric Dunn wrote:Given the nearly complete lack of shear ( despite all the models still showing it) from here to the Gulf and its current organization could see this spin up pretty quick before florida/keys.


what would you estimate at the moment? mid level Tropical Storm?
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Re: ATL: INVEST 91L - Discussion: 2 PM TWO=70%/90%

#170 Postby SunnyThoughts » Sun Sep 02, 2018 1:12 pm

Aric Dunn wrote:Given the nearly complete lack of shear ( despite all the models still showing it) from here to the Gulf and its current organization could see this spin up pretty quick before florida/keys.


Hopefully at least some shear shows up by the time it hits the gulf to keep it in check.
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Re: ATL: INVEST 91L - Discussion

#171 Postby gatorcane » Sun Sep 02, 2018 1:13 pm

Looks like it may be gaining some latitude lifting away from Cuba? Perhaps it is just an MLC (mid-level center):

https://www.tropicaltidbits.com/sat/sat ... roduct=vis
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Re: ATL: INVEST 91L - Discussion

#172 Postby Aric Dunn » Sun Sep 02, 2018 1:17 pm

meso sector is over it. 1 min images. looks to really beginning to come together.

if you use the slider you can see the low level flow pretty clear now coming in from the wsw. wish it was zoomed in more though.

http://weather.cod.edu/satrad/exper/?pa ... =undefined
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Re: ATL: INVEST 91L - Discussion: 2 PM TWO=70%/90%

#173 Postby Aric Dunn » Sun Sep 02, 2018 1:19 pm

ForexTidbits wrote:
Aric Dunn wrote:Given the nearly complete lack of shear ( despite all the models still showing it) from here to the Gulf and its current organization could see this spin up pretty quick before florida/keys.


Hey Aric, is it possible the global models are having a hard time with this system because how fairly small system it is. Do you think the hurricane models like the HWRF and HMON will have a different solution.


It's possible. I am not sure why the models have issues sometimes.
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Re: ATL: INVEST 91L - Discussion: 2 PM TWO=70%/90%

#174 Postby Aric Dunn » Sun Sep 02, 2018 1:20 pm

JPmia wrote:
Aric Dunn wrote:Given the nearly complete lack of shear ( despite all the models still showing it) from here to the Gulf and its current organization could see this spin up pretty quick before florida/keys.


what would you estimate at the moment? mid level Tropical Storm?


yeah a decent TS is possible.
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Re: ATL: INVEST 91L - Discussion

#175 Postby tgenius » Sun Sep 02, 2018 1:23 pm

So assuming it keeps looking like it’s coming together I’d assume they would probably issue watches (though given time might go straight to warnings) for Bahamas Fl keys and south fl.
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Re: ATL: INVEST 91L - Discussion

#176 Postby Aric Dunn » Sun Sep 02, 2018 1:23 pm

just another floater view/


https://weather.msfc.nasa.gov/cgi-bin/b ... 0(Band%202)&time_drop=show
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Re: ATL: INVEST 91L - Discussion

#177 Postby Aric Dunn » Sun Sep 02, 2018 1:25 pm

tgenius wrote:So assuming it keeps looking like it’s coming together I’d assume they would probably issue watches (though given time might go straight to warnings) for Bahamas Fl keys and south fl.


yeah assuming they can confirm a closed circ.. quick someone get on a boat and go check :P
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Re: ATL: INVEST 91L - Discussion

#178 Postby PSUHiker31 » Sun Sep 02, 2018 1:26 pm

I just hope this doesn't pull an H with the models constantly playing catch up on strength. They've already started behind the ball.
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Re: ATL: INVEST 91L - Discussion

#179 Postby tgenius » Sun Sep 02, 2018 1:27 pm

Aric Dunn wrote:
tgenius wrote:So assuming it keeps looking like it’s coming together I’d assume they would probably issue watches (though given time might go straight to warnings) for Bahamas Fl keys and south fl.


yeah assuming they can confirm a closed circ.. quick someone get on a boat and go check :P


I can tell you with the holiday weekend there’s a lot of people not in Miami this weekend. In any event it’s gonna be a lot of rain tomorrow.
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Re: ATL: INVEST 91L - Discussion

#180 Postby jlauderdal » Sun Sep 02, 2018 1:28 pm

tgenius wrote:
Aric Dunn wrote:
tgenius wrote:So assuming it keeps looking like it’s coming together I’d assume they would probably issue watches (though given time might go straight to warnings) for Bahamas Fl keys and south fl.


yeah assuming they can confirm a closed circ.. quick someone get on a boat and go check :P


I can tell you with the holiday weekend there’s a lot of people not in Miami this weekend. In any event it’s gonna be a lot of rain tomorrow.
already had a1.46 at the house since 1 am and the radar is lighting up to the east...wouldn't be surprised to go over 5 by the time its over
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