ATL: FRANKLIN - Models

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ATL: FRANKLIN - Models

#1 Postby AJC3 » Sat Aug 19, 2023 4:56 am

Fire away, folks...
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Re: ATL: INVEST 90L - Models

#2 Postby NDG » Sat Aug 19, 2023 7:10 am

Not a bad shear forecast by the earlier 06z SHIPS for 90L.

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Re: ATL: INVEST 90L - Models

#3 Postby NDG » Sat Aug 19, 2023 7:35 am

Nearly 100% chance by EPS of becoming a TD, 40-50% of becoming a TS before reaching Hispaniola area.

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Re: ATL: INVEST 90L - Models

#4 Postby boca » Sat Aug 19, 2023 8:07 am

NDG wrote:Nearly 100% chance by EPS of becoming a TD, 40-50% of becoming a TS before reaching Hispaniola area.

https://i.imgur.com/MlEiw3h.png


That’s a strong trough that would pull that due north across Hispaniola that far south.I wonder if that would actually happen.
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Re: ATL: INVEST 90L - Models

#5 Postby Blown Away » Sat Aug 19, 2023 8:27 am

Image
06z EPS breaking off a few to the NW after Hispaniola now.
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Re: ATL: INVEST 90L - Models

#6 Postby Spacecoast » Sat Aug 19, 2023 9:00 am

boca wrote:
NDG wrote:Nearly 100% chance by EPS of becoming a TD, 40-50% of becoming a TS before reaching Hispaniola area.

https://i.imgur.com/MlEiw3h.png


That’s a strong trough that would pull that due north across Hispaniola that far south.I wonder if that would actually happen.

6z GEFS indicates there's a good chance....
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Re: ATL: INVEST 90L - Models

#7 Postby NDG » Sat Aug 19, 2023 9:02 am

boca wrote:
NDG wrote:Nearly 100% chance by EPS of becoming a TD, 40-50% of becoming a TS before reaching Hispaniola area.

https://i.imgur.com/MlEiw3h.png


That’s a strong trough that would pull that due north across Hispaniola that far south.I wonder if that would actually happen.


Is a mid to UL low from a result of wave breaking rotating around the US stacked heat ridge that will create a weakness to its north, the stronger it gets before reaching 70W the faster it will feel the weakness as shown by the latest EPS ensembles.

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Re: ATL: INVEST 90L - Models

#8 Postby Blown Away » Sat Aug 19, 2023 10:23 am

Image
12z… Models keep drifting farther W… AEMI has realistic track, just not buying sharp NE turn from Caribbean in August… Something has to give, move farther W or no development…
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Re: ATL: INVEST 90L - Models

#9 Postby Blown Away » Sat Aug 19, 2023 10:47 am

Image

12z GFS… Initiates at 1001 mb and goes WNW… Decent W shift and Cat 1/2 hurricane N of Hispaniola… JMHO, I think there is a very fine line after @126 hrs between OTS and getting blocked back W…
Last edited by Blown Away on Sat Aug 19, 2023 11:37 am, edited 6 times in total.
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Re: ATL: INVEST 90L - Models

#10 Postby gatorcane » Sat Aug 19, 2023 11:14 am

The GFS now showing development so appears development chances are increasing though shear and land interaction should limit significant development.

How about that trough to yank it out of the Caribbean and pull it NE or even ENE? The Bermuda high has literally been eliminated. Not something you see too often this time of year but timely indeed for the SE US and Bahamas:

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Re: ATL: INVEST 90L - Models

#11 Postby CourierPR » Sat Aug 19, 2023 11:18 am

gatorcane wrote:The GFS now showing development so appears development chances are increasing though shear and land interaction should limit significant development.

How about that trough to yank it out of the Caribbean and pull it NE or even ENE? The Bermuda high has literally been eliminated. Not something you see too often this time of year but timely indeed for the SE US and Bahamas.


Timely only if it indeed comes to fruition.
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Re: ATL: INVEST 90L - Models

#12 Postby gatorcane » Sat Aug 19, 2023 11:21 am

With the absence of a Bermuda High, Bermuda might need to watch closely. GFS 0 to 174 hour loop, 500MB heights:

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Re: ATL: INVEST 90L - Models

#13 Postby Blown Away » Sat Aug 19, 2023 11:26 am

gatorcane wrote:With the absence of a Bermuda High, Bermuda might need to watch closely. GFS 0 to 174 hour loop, 500MB heights:

https://i.postimg.cc/FzzTwBs8/gfs-z500a-Norm-atl-fh0-174.gif


Bermuda in the crosshairs. Models keep trending 90L W even w/ the giant trough and that zig W then zag NE from deep Caribbean in August would be extremely rare. I think adding a little climatology to the modeling says points farther W.
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Re: ATL: INVEST 90L - Models

#14 Postby NDG » Sat Aug 19, 2023 11:33 am

No doubt the La Nina like stacked ridge over the central US will protect the US from Hilary with all those breaking waves rotating around it on its E & S sides will keep a weakness to the north of Hispaniola for 90L to take advantage of.

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Re: ATL: INVEST 90L - Models

#15 Postby Blown Away » Sat Aug 19, 2023 11:41 am

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12z ICON… Shift W & stronger… Complex environment once 90L gets above Hispaniola, drifting around for a while and then OTS, for now.
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Re: ATL: INVEST 90L - Models

#16 Postby Blown Away » Sat Aug 19, 2023 11:56 am

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12z GEFS… Still majority OTS after the GA’s, but first time in a while leaving a few ensembles behind in SE Bahamas..
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Re: ATL: INVEST 90L - Models

#17 Postby AtlanticWind » Sat Aug 19, 2023 1:13 pm

Euro farther west in Caribbean thru 72hours

Turns north sharply at 96
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Re: ATL: INVEST 90L - Models

#18 Postby Blown Away » Sat Aug 19, 2023 1:23 pm

AtlanticWind wrote:Euro farther west in Caribbean thru 72hours

Turns north sharply at 96


Image

12z Euro… Another shift W
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Re: ATL: INVEST 90L - Models

#19 Postby Blown Away » Sat Aug 19, 2023 1:27 pm

Blown Away wrote:
AtlanticWind wrote:Euro farther west in Caribbean thru 72hours

Turns north sharply at 96


[url]https://i.postimg.cc/QMgZbSgh/ec-fast-uv850-vort-watl-fh0-120.gif [/url]


12z Euro… Another shift W


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Re: ATL: INVEST 90L - Models

#20 Postby N2FSU » Sat Aug 19, 2023 1:31 pm

12z GFS ensembles. Looks like some members don't make the sharp north turn, and even some that do hint at a NW bend at the end. Image


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