Possible Development ESE of the Lesser Antilles (Is Invest 90L)

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Re: Possible Development ESE of the Lesser Antilles

#41 Postby Blown Away » Fri Aug 18, 2023 12:12 pm

cycloneye wrote:Recon for Sunday.

POSSIBLE LOW-LEVEL INVEST MISSION
OVER THE EASTERN CARIBBEAN NEAR 14.0N 65.5W FOR 20/1800Z.

Image

TW seems to be moving a little faster than the 12z model runs and still W.
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Re: Possible Development ESE of the Lesser Antilles

#42 Postby Blown Away » Fri Aug 18, 2023 12:22 pm

cycloneye wrote:Recon for Sunday.

POSSIBLE LOW-LEVEL INVEST MISSION
OVER THE EASTERN CARIBBEAN NEAR 14.0N 65.5W FOR 20/1800Z.


Image

Do we assume the NHC not favoring the recent GFS run when scheduling recon??
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Re: Possible Development ESE of the Lesser Antilles

#43 Postby cycloneye » Fri Aug 18, 2023 12:56 pm

East-Southeast of the Lesser Antilles:
Another area of low pressure could form in a day or so from an
elongated trough of low pressure located several hundred miles to
the east-southeast of the Lesser Antilles. Some slow development of
this system is possible over the weekend and into early next week
as it moves generally west-northwestward at 10 to 15 mph across the
Lesser Antilles and into the northeastern Caribbean Sea.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...low...30 percent.
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Possible Development ESE of the Lesser Antilles

#44 Postby Spacecoast » Fri Aug 18, 2023 1:35 pm

12z weaker through 144hrs. .. Maybe why NHC kept this @30%
Image
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Re: Possible Development ESE of the Lesser Antilles

#45 Postby Ianswfl » Fri Aug 18, 2023 1:52 pm

Blown Away wrote:
cycloneye wrote:Recon for Sunday.

POSSIBLE LOW-LEVEL INVEST MISSION
OVER THE EASTERN CARIBBEAN NEAR 14.0N 65.5W FOR 20/1800Z.

[url]https://i.postimg.cc/x8kJsxmQ/60151644.gif [/url]

TW seems to be moving a little faster than the 12z model runs and still W.


VERY complex set up here. Kinda Jeanne vibes.
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Re: Possible Development ESE of the Lesser Antilles

#46 Postby cycloneye » Fri Aug 18, 2023 2:21 pm

Blown Away wrote:I think it's time to tag this Invest 90L??


Looks like nothing yet this afternoon.
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Re: Possible Development ESE of the Lesser Antilles

#47 Postby gatorcane » Fri Aug 18, 2023 2:32 pm

Looks like the Euro has a much more realistic outcome now as strong troughiness dominates the Western Atlantic not to mention quite a bit of shear until it is out of the tropical latitudes. Now it is aligned more with the GFS and CMC:

Image
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Re: Possible Development ESE of the Lesser Antilles

#48 Postby AutoPenalti » Fri Aug 18, 2023 3:05 pm

gatorcane wrote:Looks like the Euro has a much more realistic outcome now as strong troughiness dominates the Western Atlantic not to mention quite a bit of shear until it is out of the tropical latitudes. Now it is aligned more with the GFS and CMC:

https://i.postimg.cc/nL9K76hH/ec-fast-uv850-vort-watl-fh0-240.gif

Except that troughiness doesn't actually show up until 5 days after.. so it's not necessarily realistic since it all depends on where exactly this develops.
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Model Runs Cheat Sheet:
GFS (5:30 AM/PM, 11:30 AM/PM)
HWRF, GFDL, UKMET, NAVGEM (6:30-8:00 AM/PM, 12:30-2:00 AM/PM)
ECMWF (1:45 AM/PM)

TCVN
is a weighted averaged

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Re: Possible Development ESE of the Lesser Antilles

#49 Postby gatorcane » Fri Aug 18, 2023 3:07 pm

Also looks like just about every Euro ensemble is moving it north then NE out to sea once north of Hispaniola like the Euro op and other globals are doing. Some of the members show major hurricane too, not sure I buy that just yet. Maybe Bermuda should keep a close eye according to those ensembles. Somebody can post the image.
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Re: Possible Development ESE of the Lesser Antilles

#50 Postby Blown Away » Fri Aug 18, 2023 3:25 pm

gatorcane wrote:Looks like the Euro has a much more realistic outcome now as strong troughiness dominates the Western Atlantic not to mention quite a bit of shear until it is out of the tropical latitudes. Now it is aligned more with the GFS and CMC:

https://i.postimg.cc/nL9K76hH/ec-fast-uv850-vort-watl-fh0-240.gif


Image
It might be realistic with regards to the current modeling but that would be a rare track to take for sure, that is IF this TW ever does actually develop.

Also, drilling Hispaniola down the middle played a role in a much weaker 12z Euro.
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Re: Possible Development ESE of the Lesser Antilles

#51 Postby Nimbus » Fri Aug 18, 2023 5:44 pm

gatorcane wrote:Looks like the Euro has a much more realistic outcome now as strong troughiness dominates the Western Atlantic not to mention quite a bit of shear until it is out of the tropical latitudes. Now it is aligned more with the GFS and CMC:

https://i.postimg.cc/nL9K76hH/ec-fast-uv850-vort-watl-fh0-240.gif


Still not sure the troughiness is going to dig down into the Caribbean far enough to get all the energy from this wave. If it stays weak it might slip through, should know by Monday and since its the system that could be a threat to the CONUS, its worth watching.
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Re: Possible Development ESE of the Lesser Antilles

#52 Postby cycloneye » Fri Aug 18, 2023 6:47 pm

East-Southeast of the Lesser Antilles:
An area of low pressure could form in a day or so from an
elongated trough of low pressure located several hundred miles to
the east-southeast of the Lesser Antilles. Some slow development of
this system is possible over the weekend and into early next week
as it moves generally west-northwestward at 10 to 15 mph across the
Lesser Antilles and into the northeastern Caribbean Sea.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...low...30 percent.
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Re: Possible Development ESE of the Lesser Antilles

#53 Postby Blown Away » Fri Aug 18, 2023 8:50 pm

Image
Probably not much at the surface, but starting to get the look of consolidating.

At 8pm the NHC estimated the center @11N/54W, if there is a circulation center it’s farther west @11N/57W… JMHO
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Re: Possible Development ESE of the Lesser Antilles

#54 Postby ScottNAtlanta » Fri Aug 18, 2023 9:13 pm

Blown Away wrote:[url]https://i.postimg.cc/XJc3chzc/goes16-vis-swir-catl.gif [/url]
Probably not much at the surface, but starting to get the look of consolidating.

At 8pm the NHC estimated the center @11N/54W, if there is a circulation center it’s farther west @11N/57W… JMHO

We should be thankful for the dry air in the MDR...we would be in a world of trouble if it wasn't there
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Re: Possible Development ESE of the Lesser Antilles

#55 Postby IsabelaWeather » Fri Aug 18, 2023 9:29 pm

ScottNAtlanta wrote:
Blown Away wrote:[url]https://i.postimg.cc/XJc3chzc/goes16-vis-swir-catl.gif [/url]
Probably not much at the surface, but starting to get the look of consolidating.

At 8pm the NHC estimated the center @11N/54W, if there is a circulation center it’s farther west @11N/57W… JMHO

We should be thankful for the dry air in the MDR...we would be in a world of trouble if it wasn't there


Well, at the very least these systems will be moistening the atmosphere, helping future systems when they come along.
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Re: Possible Development ESE of the Lesser Antilles

#56 Postby SouthDadeFish » Fri Aug 18, 2023 10:12 pm

Things I don't understand:

1) Why this isn't an Invest.

2) Why the genesis odds are so low.

But I respect NHC's expertise. We'll see.
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Re: Possible Development ESE of the Lesser Antilles

#57 Postby cycloneye » Fri Aug 18, 2023 10:36 pm

SouthDadeFish wrote:Things I don't understand:

1) Why this isn't an Invest.

2) Why the genesis odds are so low.

But I respect NHC's expertise. We'll see.


And is close to the islands.
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Re: Possible Development ESE of the Lesser Antilles

#58 Postby cycloneye » Fri Aug 18, 2023 10:40 pm

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Re: Possible Development ESE of the Lesser Antilles

#59 Postby Blown Away » Fri Aug 18, 2023 10:54 pm

cycloneye wrote:
SouthDadeFish wrote:Things I don't understand:

1) Why this isn't an Invest.

2) Why the genesis odds are so low.

But I respect NHC's expertise. We'll see.


And is close to the islands.


And continues due W not “generally WNW” and faster than models…
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Re: Possible Development ESE of the Lesser Antilles

#60 Postby Blown Away » Sat Aug 19, 2023 12:09 am

Image

Image

AOI looking better tonight. Approaching the islands and surprised at a minimum this is not an Invest??
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