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2025 Atlantic Hurricane Season


BarryStantonGBP
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1 minute ago, BarryStantonGBP said:

So the lemon could burst

over for lemon

Not necessarily—I don’t have time to illustrate it but the wave looks like it is further south and likely to get caught up in the monsoon trough. That increases the odds of development because it likely puts more distance between the wave and the TUTT as it moves westward and tries to develop. But there’s a lot to sort out still. 
 

93331174.gif?0.4450331742603323

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48 minutes ago, WxWatcher007 said:

Not necessarily—I don’t have time to illustrate it but the wave looks like it is further south and likely to get caught up in the monsoon trough. That increases the odds of development because it likely puts more distance between the wave and the TUTT as it moves westward and tries to develop. But there’s a lot to sort out still. 
 

93331174.gif?0.4450331742603323

One model run had it split at the end of the tutt

 

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There’s an unusually large disagreement between GEFS and EPS regarding the MJO as they almost couldn’t be further apart!

1. GEFS heads for less threatening MC/W Pac (at low amp) pretty quickly and is on phase 6/7 border on 9/15 (supported by CMC):

IMG_4492.png.2ffadb3df4e4208e4f57eb870889ca13.png

2. Euro ens stuck mainly in phase 2, the most dangerous phase for Conus H hits in JAS (supported by JMA):

IMG_4493.png.15601beb5b6942f14a85404921214e59.png

 

I may be forgetting but I can’t recall ever seeing this degree of disagreement between these two! I don’t have a good feel for which will verify more closely but of course it could end up between the two.

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8 minutes ago, GaWx said:

There’s an unusually large disagreement between GEFS and EPS regarding the MJO as they almost couldn’t be further apart!

1. GEFS heads for less threatening MC/W Pac (at low amp) pretty quickly and is on phase 6/7 border on 9/15 (supported by CMC):

IMG_4492.png.2ffadb3df4e4208e4f57eb870889ca13.png

2. Euro ens stuck mainly in phase 2, the most dangerous phase for Conus H hits in JAS (supported by JMA):

IMG_4493.png.15601beb5b6942f14a85404921214e59.png

 

I may be forgetting but I can’t recall ever seeing this degree of disagreement between these two! I don’t have a good feel for which will verify more closely but of course it could end up between the two.

Gfs is a meme

go with euro

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17 hours ago, BarryStantonGBP said:

Gfs is a meme

go with euro

 Wow, what a massive fold by GEFS to EPS in today’s MJO forecast! Whereas the EPS is similar to yesterday’s idea of not going to the right side (MC), GEFS abandoned the typical counterclockwise path that it had yesterday through MC and then to 6/7. Today, it remains in 2 through 9/11 and then crawls “backwards” up to 1 followed by 8 as of 9/16 (all mainly inside the circle, i.e., low amp). The EPS is very similar:

Today’s (9/2) GEFS prog:

IMG_4495.png.3fe6d5989499df21e3fe55f05815eb01.png

Compare today’s GEFS to yesterday’s (9/1) GEFS prog: huge change!

IMG_4492.png.b6d16a460924879971aee45c787e2398.png
 

Thus, 9/2 EPS, which is very similar to 9/1 EPS, is very similar to 9/2 GEFS as it also ends up in low amp 8:

IMG_4496.png.8098f7cb6531fab67a83108c1eed0d53.png

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11 minutes ago, GaWx said:

 Wow, what a massive fold by GEFS to EPS in today’s MJO forecast! Whereas the EPS is similar to yesterday’s idea of not going to the right side (MC), GEFS abandoned the typical counterclockwise path that it had yesterday through MC and then to 6/7. Today, it remains in 2 through 9/11 and then crawls “backwards” up to 1 followed by 8 as of 9/16 (all mainly inside the circle, i.e., low amp). The EPS is very similar:

Today’s (9/2) GEFS prog:

IMG_4495.png.3fe6d5989499df21e3fe55f05815eb01.png

Compare today’s GEFS to yesterday’s (9/1) GEFS prog: huge change!

IMG_4492.png.b6d16a460924879971aee45c787e2398.png
 

Thus, 9/2 EPS, which is very similar to 9/1 EPS, is very similar to 9/2 GEFS:

IMG_4496.png.8098f7cb6531fab67a83108c1eed0d53.png

no wonder models had a wcar/gulf threat 

it'll go on and off for now

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4 hours ago, BarryStantonGBP said:

no wonder models had a wcar/gulf threat 

it'll go on and off for now

 The 12Z EPS has a notable signal for a TC formation (~25%) in the S Gulf with them moving mainly N to WNW and then hitting or threatening to hit from NE MX through TX/LA. But this could be mainly gone on the 0Z for all we know since this run looks much different vs earlier runs and its way out in the unreliable late week 2.

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1 hour ago, GaWx said:

 The 12Z EPS has a notable signal for a TC formation (~25%) in the S Gulf with them moving mainly N to WNW and then hitting or threatening to hit from NE MX through TX/LA. But this could be mainly gone on the 0Z for all we know since this run looks much different vs earlier runs and its way out in the unreliable late week 2.

thoughts on these new signals lad

 

IMG_9942.png?ex=68b89a23&is=68b748a3&hm=

 

Re: 2025 Global Model Runs Discussion (Out thru day 16)

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#821 by LAF92 » Tue Sep 02, 2025 1:55 pm 

Stratton23 wrote:Seeint a little more of a signal on the GEFS/ EPS for some development in the western caribbean/ southern gulf in the 10-12 day range, timing matches up with the MJO moving into the atlantic basin, worth watching, if we get any impactful storms this season, its most certainly coming from the western caribbean/ CAG


The 12z EPS is the most active I’ve seen all year for the gulf

 

 

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Re: 2025 Global Model Runs Discussion (Out thru day 16)

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#822 by Stratton23 » Tue Sep 02, 2025 1:57 pm 

LarryWx yep lets see if the signal sticks on future runs, but even that far out it definitely is worth paying some attention too
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lsuhurricane Category 1
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Re: 2025 Global Model Runs Discussion (Out thru day 16)

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#823 by lsuhurricane » Tue Sep 02, 2025 2:02 pm 

Easily the most action I've seen from any model suite for the Gulf this season. 

Image
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IcyTundra Category 5
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Re: 2025 Global Model Runs Discussion (Out thru day 16)

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#824 by IcyTundra » Tue Sep 02, 2025 2:27 pm 

lsuhurricane wrote:Easily the most action I've seen from any model suite for the Gulf this season. 

https://i.ibb.co/XrNNLfcF/14-km-EPS-Global-Cyclones-Caribbean-Ens-MSLP-Spaghettios-2.gif


More bullish than the GEFS but it is notable that both of the major ensemble suites are showing an elevated chance of development in the WCAR/GOM in that 10-14 day range. The Gulf and WCAR have seen zero activity this season so it would make sense for something to finally develop there at some point this season.
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jlauderdal S2K Supporter
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Re: RE: Re: 2025 Global Model Runs Discussion (Out thru day 16)

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#825 by jlauderdal » Tue Sep 02, 2025 2:34 pm 

LAF92 wrote:
Stratton23 wrote:Seeint a little more of a signal on the GEFS/ EPS for some development in the western caribbean/ southern gulf in the 10-12 day range, timing matches up with the MJO moving into the atlantic basin, worth watching, if we get any impactful storms this season, its most certainly coming from the western caribbean/ CAG

The 12z EPS is the most active I’ve seen all year for the gulf
Plenty of Gulf energy that needs to be transferred. Seems like a matter of time.

Sent from my Pixel 9 using Tapatalk
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