ATL: MINDY - Post-Tropical - Discussion

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ATL: MINDY - Post-Tropical - Discussion

#1 Postby Subtrop » Tue Aug 31, 2021 5:42 pm

AL, 91, 2021090100, , BEST, 0, 123N, 781W, 25, 1009, LO, 34, NEQ, 0, 0, 0, 0, 1011, 150, 70, 0, 0, L, 0, , 0, 0, INVEST, S, 0, , 0, 0, 0, 0, genesis-num, 027, SPAWNINVEST, al792021 to al912021,


https://ftp.nhc.noaa.gov/atcf/btk/
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Re: ATL: INVEST 91L - Discussion

#2 Postby ouragans » Tue Aug 31, 2021 5:46 pm

Why is setup at 0z? It should have been at 18z
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Re: ATL: INVEST 91L - Discussion

#3 Postby floridasun78 » Tue Aug 31, 2021 5:54 pm

this one sw carfribbean?
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Re: ATL: INVEST 91L - Discussion

#4 Postby cycloneye » Tue Aug 31, 2021 5:59 pm

floridasun78 wrote:this one sw carfribbean?


Yes, that area.
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Re: ATL: INVEST 91L - Discussion

#5 Postby ElectricStorm » Tue Aug 31, 2021 6:00 pm

I think the chances of this getting into the gulf are much lower than Ida and probably pretty low overall. However, if it does somehow manage to get there it could be a problem. I'm leaning towards no for now but we'll have to watch it just in case.

Considering what just happened, I hope this one doesn't make it up there...
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Re: ATL: INVEST 91L - Discussion

#6 Postby Nimbus » Tue Aug 31, 2021 6:12 pm

Entergy New Orleans announced they have two local sources of power back up so some main trunks for the hospitals will be back online this week. The model run that brings this in just west of there isn't helping the planning any.
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Re: ATL: INVEST 91L - Discussion

#7 Postby cycloneye » Tue Aug 31, 2021 6:31 pm

An area of low pressure is producing some disorganized shower
activity over the southwestern Caribbean Sea. Some slow development
of this system is possible over the next couple of days as it moves
westward or west-northwestward at 5 to 10 mph toward Central
America. Thereafter, land interaction with Central America and the
Yucatan Peninsula of Mexico will likely limit further development of
this system. Regardless of development, heavy rains are possible
across portions of Central America and the Yucatan Peninsula late
this week and this weekend.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 5 days...low...20 percent.


Image
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Re: ATL: INVEST 91L - Discussion

#8 Postby Javlin » Tue Aug 31, 2021 8:04 pm

I was about to post in the other thread about to ask do I see a LLS @12.5N 77.5W?moving NW still have a TUTT out to the NNE causing shear but a little puff clouds pop up anyway.

https://www.tropicaltidbits.com/sat/sat ... =truecolor

500mb vorticity is strong in that area also

http://tropic.ssec.wisc.edu/real-time/w ... oom=&time=
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Re: ATL: INVEST 91L - Discussion

#9 Postby Chris_in_Tampa » Tue Aug 31, 2021 8:59 pm

Tweet from earlier this evening from Philippe Papin.

 https://twitter.com/pppapin/status/1432816862182748165


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Re: ATL: INVEST 91L - Discussion

#10 Postby StPeteMike » Tue Aug 31, 2021 9:08 pm

Not really convinced this will get its act going, but might set up a moist environment for something to spin up early next week…
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Re: ATL: INVEST 91L - Discussion

#11 Postby Wampadawg » Tue Aug 31, 2021 9:28 pm

cycloneye wrote: An area of low pressure is producing some disorganized shower
activity over the southwestern Caribbean Sea. Some slow development
of this system is possible over the next couple of days as it moves
westward or west-northwestward at 5 to 10 mph toward Central
America. Thereafter, land interaction with Central America and the
Yucatan Peninsula of Mexico will likely limit further development of
this system. Regardless of development, heavy rains are possible
across portions of Central America and the Yucatan Peninsula late
this week and this weekend.
* Formation chance through 48 hours...low...20 percent.
* Formation chance through 5 days...low...20 percent.


Image
StPeteMike wrote:Not really convinced this will get its act going, but might set up a moist environment for something to spin up early next week…

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Re: ATL: INVEST 91L - Discussion

#12 Postby AlphaToOmega » Wed Sep 01, 2021 6:49 am

An area of low pressure continues to produce disorganized shower
activity over the southwestern Caribbean Sea. Some slow development
of this system remains possible over the next couple of days if it
remains over open water while moving west-northwestward or
northwestward at 5 to 10 mph near the coast of Central America.
Thereafter, the system will have another opportunity for gradual
development in the southwestern Gulf of Mexico. Regardless of
development, heavy rains are possible across portions of Central
America and the Yucatan Peninsula later this week into the weekend.
* Formation chance through 48 hours...low...30 percent.
* Formation chance through 5 days...low...30 percent.
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Re: ATL: INVEST 91L - Discussion

#13 Postby xironman » Wed Sep 01, 2021 6:53 am

I think the models are initializing this one a bit south of where it is. The spin from yesterday afternoon is getting close to CA, but it is moving slow and is slightly north of west.

Image
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Re: ATL: INVEST 91L - Discussion

#14 Postby TallyTracker » Wed Sep 01, 2021 7:45 am

I wonder if this disturbance might form the way the 3 BOC storms did in 2005: Bret (40mph TS), Gert (45 mph) TS, and Jose (50 mph). All three were quick spin ups near the coast. I think that’s this disturbance’s best chance at developing.
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Re: ATL: INVEST 91L - Discussion

#15 Postby dantonlsu » Wed Sep 01, 2021 7:58 am

Not too much model support for this one just yet.
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Re: ATL: INVEST 91L - Discussion

#16 Postby tropicwatch » Wed Sep 01, 2021 8:06 am

850mb vorticity is increasing but I think it is a little further north then what is depicted on this map.

http://tropic.ssec.wisc.edu/real-time/windmain.php?&basin=atlantic&sat=wg8&prod=vor&zoom=&time=
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Re: ATL: INVEST 91L - Discussion

#17 Postby ChrisH-UK » Wed Sep 01, 2021 10:39 am

Just had a look at 91L on the satellite and it appears to be forming up quite well. However it has a wall of shear to get through.

Source - GOES-16 Red Band https://col.st/AY23g

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Re: ATL: INVEST 91L - Discussion

#18 Postby tropicwatch » Wed Sep 01, 2021 12:05 pm

With Recon tentatively scheduled for tomorrow. Sounds like they will up the percentage of development chances.
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Re: ATL: INVEST 91L - Discussion

#19 Postby cycloneye » Wed Sep 01, 2021 12:51 pm

Recent satellite wind data indicates the area of low pressure
located in the southwestern Caribbean Sea has a well-defined
circulation. However, shower and thunderstorm activity remains
disorganized and displaced north of the center. Some slow
development of this system remains possible over the next day or two
if it remains over open water while moving west-northwestward or
northwestward at 5 to 10 mph along the coast of Central America. By
early next week, the system will have another opportunity for
gradual development in the southwestern Gulf of Mexico. Regardless
of development, heavy rains are possible across portions of Central
America and the Yucatan Peninsula by late this week into the
weekend.
* Formation chance through 48 hours...low...30 percent.
* Formation chance through 5 days...low...30 percent.
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Re: ATL: INVEST 91L - Discussion

#20 Postby Wampadawg » Wed Sep 01, 2021 1:04 pm

cycloneye wrote:
Recent satellite wind data indicates the area of low pressure
located in the southwestern Caribbean Sea has a well-defined
circulation. However, shower and thunderstorm activity remains
disorganized and displaced north of the center. Some slow
development of this system remains possible over the next day or two
if it remains over open water while moving west-northwestward or
northwestward at 5 to 10 mph along the coast of Central America. By
early next week, the system will have another opportunity for
gradual development in the southwestern Gulf of Mexico. Regardless
of development, heavy rains are possible across portions of Central
America and the Yucatan Peninsula by late this week into the
weekend.
* Formation chance through 48 hours...low...30 percent.
* Formation chance through 5 days...low...30 percent.

Mmmm this seems just a little troubling
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