Tropical Wave East of the Leeward Islands (Is Invest 90L)

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Re: Tropical Wave in the Central Atlantic (10/60)

#241 Postby cycloneye » Wed Aug 20, 2025 9:29 am

A little bit more convection.

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Re: Tropical Wave in the Central Atlantic (10/60)

#242 Postby WeatherBoy2000 » Wed Aug 20, 2025 11:19 am

The GFS has been pretty consistent with this for the past few runs now, forming north of the lesser Antilles/Puerto Rico and becoming a low-end hurricane in the subtropics.
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Re: Tropical Wave in the Central Atlantic (10/60)

#243 Postby cycloneye » Wed Aug 20, 2025 12:46 pm

2 PM TWO doesn't have anything new.

Near the Leeward Islands in the Tropical Atlantic:
A tropical wave located over the central tropical Atlantic continues
to produce a broad area of disorganized showers and thunderstorms.
Environmental conditions appear conducive for gradual development of
this system, and a tropical depression could form late this week or
over the weekend while it moves near or to the north of the northern
Leeward Islands.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...medium...60 percent.
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Re: Tropical Wave in the Central Atlantic (10/70)

#244 Postby cycloneye » Wed Aug 20, 2025 6:42 pm

Code Red

Near the Leeward Islands in the Tropical Atlantic:
A tropical wave located several hundred miles east of the Leeward
Islands is producing a broad area of disorganized showers and
thunderstorms. Environmental conditions appear conducive for gradual
development of this system, and a tropical depression is likely to
form by this weekend while it moves near or to the north of the
northern Leeward Islands.
* Formation chance through 48 hours...low...10 percent.
* Formation chance through 7 days...high...70 percent.


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Re: Tropical Wave in the Central Atlantic (10/70)

#245 Postby Hurricaneman » Wed Aug 20, 2025 8:27 pm

This could be a possible low end hurricane for Bermuda
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Re: Tropical Wave in the Central Atlantic (10/70)

#246 Postby Travorum » Wed Aug 20, 2025 8:34 pm

At this point this is mainly between a Bermuda/Atlantic Canada threat and total recurve if it develops at all, at least based on ensembles. GFS ensembles send a strong TS to Cat 1 Hurricane towards Bermuda's vicinity before giving Newfoundland and Nova Scotia some much-needed rain, while the Euro members that do develop trend east of Bermuda and OTS:

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Re: Tropical Wave in the Central Atlantic (10/70)

#247 Postby Ptarmigan » Wed Aug 20, 2025 8:36 pm

I wonder why this one is not tagged with an Invest?
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Re: Tropical Wave in the Central Atlantic (10/70)

#248 Postby hurricane2025 » Wed Aug 20, 2025 9:50 pm

No threat will prob soon but it’s a fish.. will be a weak one
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Re: Tropical Wave in the Central Atlantic (10/70)

#249 Postby LarryWx » Wed Aug 20, 2025 11:25 pm

hurricane2025 wrote:No threat will prob soon but it’s a fish.. will be a weak one


This may affect Bermuda.
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Re: Tropical Wave East of the Leeward Islands (30/70)

#250 Postby cycloneye » Thu Aug 21, 2025 3:58 am

Near the Leeward Islands in the Tropical Atlantic:
Shower and thunderstorm activity has become a bit more concentrated
in association with a tropical wave located a few hundred miles east
of the Leeward Islands. Environmental conditions appear conducive
for further development of this system, and a tropical depression is
likely to form this weekend while it moves near or to the north of
the northern Leeward Islands.
* Formation chance through 48 hours...low...30 percent.
* Formation chance through 7 days...high...70 percent.
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Re: Tropical Wave East of the Leeward Islands (40/70)

#251 Postby cycloneye » Thu Aug 21, 2025 6:58 am

Near the Leeward Islands in the Tropical Atlantic:
An area of showers and thunderstorms associated with a tropical
wave located a few hundred miles east of the Leeward Islands has
changed little over the past several hours. Environmental
conditions appear conducive for further development of this system,
and a tropical depression is likely to form this weekend while it
moves near or to the north of the northern Leeward Islands.
* Formation chance through 48 hours...medium..40 percent.
* Formation chance through 7 days...high...70 percent.
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Re: Tropical Wave East of the Leeward Islands (40/70)

#252 Postby cycloneye » Thu Aug 21, 2025 7:38 am

Invest 90L should be up shortly. Note= Anyone can start a invest thread, not the same members that start them like me :D and a couple more. Let's have participation expand.

Link to ATCF.

https://ftp.nhc.noaa.gov/atcf/btk/
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Re: Tropical Wave East of the Leeward Islands (40/70)

#253 Postby Stormybajan » Thu Aug 21, 2025 8:35 am

For some reason, this 40-70 wave (which models do show developing in a few days) is STILL not an invest. Also Recon is scheduled for tomorrow for this system so why are nhc so hesitant with the invest tag for this one? Im a bit at a loss tbh. :roll: . Im sure it will be tagged sometime today but I just found it strange since its been on the AOI map for a while now
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Re: Tropical Wave East of the Leeward Islands (40/70)

#254 Postby cycloneye » Thu Aug 21, 2025 8:40 am

For those who want to start the invest 90L thread, here is a tip.

90L will appear on the list between 99L and 05L which is Erin. Keep refreshing. :D

https://ftp.nhc.noaa.gov/atcf/btk/

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Re: Tropical Wave East of the Leeward Islands (40/70)

#255 Postby Kazmit » Thu Aug 21, 2025 8:45 am

No invest is crazy, but even crazier is the vast difference between the GFS solution and other models. GFS has a cat 2 direct hit on Bermuda and the others barely show a depression.
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Re: Tropical Wave East of the Leeward Islands (40/70)

#256 Postby cycloneye » Thu Aug 21, 2025 8:51 am

Approaching the Leewards and still not a invest, hmmmm.

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Re: Tropical Wave East of the Leeward Islands (Is Invest 90L)

#257 Postby AJC3 » Thu Aug 21, 2025 10:04 am

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