ATL: SAM - Models

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pgoss11
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Re: ATL: INVEST 98L - Models

#541 Postby pgoss11 » Wed Sep 22, 2021 2:44 pm


I got to go with climatology on this one and say safely away from US coastline.
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Re: ATL: INVEST 98L - Models

#542 Postby SFLcane » Wed Sep 22, 2021 2:46 pm

Image
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Re: ATL: INVEST 98L - Models

#543 Postby Hypercane_Kyle » Wed Sep 22, 2021 2:49 pm

It's incredibly, incredibly hard to get a storm nearly at 30W to hit the CONUS this time of year. Odds of significant impacts from future Sam, while not completely impossible, appear much slimmer today.
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Re: ATL: INVEST 98L - Models

#544 Postby Shell Mound » Wed Sep 22, 2021 2:51 pm

chris_fit wrote:12Z Eps say not so fast OP....

https://i.imgur.com/nQ7bgSQ.gif

Even so, roughly four-fifths of the fifty-one ensemble members show either OTS or impacts to Bermuda. Most even pass to the north of the Caribbean.
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Re: ATL: INVEST 98L - Models

#545 Postby sma10 » Wed Sep 22, 2021 3:00 pm

Hypercane_Kyle wrote:It's incredibly, incredibly hard to get a storm nearly at 30W to hit the CONUS this time of year. Odds of significant impacts from future Sam, while not completely impossible, appear much slimmer today.


Statistically it's incredibly hard to get a storm at 30W to hit the CONUS any time of year.

In October, history tells us it's almost impossible
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Re: ATL: INVEST 98L - Models

#546 Postby aspen » Wed Sep 22, 2021 3:05 pm

Hypercane_Kyle wrote:It's incredibly, incredibly hard to get a storm nearly at 30W to hit the CONUS this time of year. Odds of significant impacts from future Sam, while not completely impossible, appear much slimmer today.

I know everyone’s focused on either the CONUS or the Lesser Antilles, but this could be a significant problem for Bermuda if the more SW tracks verify. I’m not worried about the CONUS yet because it’s so far out and, as you and others have said, climo is on our side this late in the season.

IMO, it’s probably best to wait another day or two until 98L has a better defined LLC to give more merit to possible tracks past 60W. 98L could get further north quicker and be OTS like the GFS, or it could retain a W/WNW motion for longer and be a threat or close call for the Leeward Islands like the Euro.
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Re: ATL: INVEST 98L - Models

#547 Postby blp » Wed Sep 22, 2021 3:06 pm

 https://twitter.com/webberweather/status/1440766291787145216




This is a long way from being decided. This will swing back and forth.
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Re: ATL: INVEST 98L - Models

#548 Postby Zonacane » Wed Sep 22, 2021 3:12 pm

When are people gonna learn clinging to climotology and treating 200+ hour model runs as deterministic is a bad idea?
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Re: ATL: INVEST 98L - Models

#549 Postby Category5Kaiju » Wed Sep 22, 2021 3:21 pm



Looks like those ensembles have two distinct clusters: a sharp recurve east of the islands or a continued WNW track. Hmm...
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Re: ATL: EIGHTEEN - Models

#550 Postby Shell Mound » Wed Sep 22, 2021 3:59 pm

Image

The above screenshot shows the EPS members through D7 (168h). The members that show a hurricane at or before this time all pass to the north of the islands.
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Re: ATL: EIGHTEEN - Models

#551 Postby skyline385 » Wed Sep 22, 2021 4:47 pm

Shell Mound wrote:Image

The above screenshot shows the EPS members through D7 (168h). The members that show a hurricane at or before this time all pass to the north of the islands.

That's a very good observation. With the NHC even predicting a major at D5, it seems very likely that all solutions will start converging to a recurve...
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Re: ATL: EIGHTEEN - Models

#552 Postby Spacecoast » Wed Sep 22, 2021 5:11 pm

12z ECMF: Operational now NE of ensemble mean through hr 216.
Image
12z GEFS: Operational NE of ens mean
Image
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Re: ATL: INVEST 98L - Models

#553 Postby StormPyrate » Wed Sep 22, 2021 5:12 pm

Zonacane wrote:When are people gonna learn clinging to climotology and treating 200+ hour model runs as deterministic is a bad idea?


when climatology becomes irrelevant, and we are no where near that point.
Been watching these things for a long time. And the beginning of cold front season in Florida means the chances drop for a direct impact from across the ocean.
By no means out of the woods, could still have something pop up closer to home.
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Re: ATL: EIGHTEEN - Models

#554 Postby skyline385 » Wed Sep 22, 2021 5:15 pm

18Z GFS slower so far
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Re: ATL: EIGHTEEN - Models

#555 Postby Blown Away » Wed Sep 22, 2021 5:23 pm

Image
18z GFS +150 hrs... HP a little stronger and trough a bit weaker...
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Re: ATL: EIGHTEEN - Models

#556 Postby Teban54 » Wed Sep 22, 2021 5:25 pm

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Re: ATL: EIGHTEEN - Models

#557 Postby Blown Away » Wed Sep 22, 2021 5:29 pm

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18z GFS+174 hrs... @200 mile S shift at 174 hrs...
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Re: ATL: EIGHTEEN - Models

#558 Postby Blown Away » Wed Sep 22, 2021 5:33 pm

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18z vs 12z GFS Trend... Huge S shift.
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Re: ATL: EIGHTEEN - Models

#559 Postby Hurricaneman » Wed Sep 22, 2021 5:36 pm

Probably out to sea between Bermuda and North Carolina this run
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Re: ATL: EIGHTEEN - Models

#560 Postby SouthFLTropics » Wed Sep 22, 2021 5:37 pm

Despite it being further south, it appears that there is a clear exit. Trap door open.
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