Trough of low pressure in Western Caribbean (Is Invest 95L)
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Re: Trough of low pressure in Western Caribbean
Hmm, I see the ensembles are a little happier with this disturbance...maybe it actually has a shot now.
Today’s 12z GFS-Para had some weak slop entering the Gulf. Not much, but it’s something. Hard to believe we went from consistent 920s to practically nothing in just a few days.
Today’s 12z GFS-Para had some weak slop entering the Gulf. Not much, but it’s something. Hard to believe we went from consistent 920s to practically nothing in just a few days.
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Re: Trough of low pressure in Western Caribbean
aspen wrote:Hmm, I see the ensembles are a little happier with this disturbance...maybe it actually has a shot now.
Today’s 12z GFS-Para had some weak slop entering the Gulf. Not much, but it’s something. Hard to believe we went from consistent 920s to practically nothing in just a few days.
But the key is and what I think is making this harder to follow is that there isn't just one disturbance. It is clearly a 2nd disturbance that the 12Z UKMET/EPS, and GEFS are harping on now and which may or may not even be showing up yet. If it is, it is now in the SW Caribbean, not NW Car.
Edit: Upon further review of models, I do think the followup being developed is now in the SW Caribbean. Whereas the 12Z NAVGEM didn't develop it, the 18Z does as a second distinct area that is now in the SW Caribbean. At hour 138, it has it almost exactly where the 12Z UKMET has it at 144.
Last edited by LarryWx on Mon Oct 19, 2020 7:05 pm, edited 1 time in total.
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Re: Trough of low pressure in Western Caribbean
Oh boy here we go again. Is it another case of the boy who cried wolf?
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Re: Trough of low pressure in Western Caribbean
I don't normally post the NAVGEM, but I think it (18Z) may be onto something with what's now in the SW Caribbean in light of the 12Z UKMET/EPS and 18Z GEFS:

Note that had this gone out further, it may have gotten blocked just off FL as ridging looks like it is about to build back in to its north.
Got to watch this one, folks! It may be sneaking up on us.

Note that had this gone out further, it may have gotten blocked just off FL as ridging looks like it is about to build back in to its north.
Got to watch this one, folks! It may be sneaking up on us.
Last edited by LarryWx on Mon Oct 19, 2020 7:20 pm, edited 1 time in total.
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Re: Trough of low pressure in Western Caribbean
GeneratorPower wrote:
Oh boy here we go again. Is it another case of the boy who cried wolf?
This is different as it now has the UKMET and a good number of the EPS members developing it.
Could those old GFS runs end up right after all after dropping it??
The 18Z EPS goes out to 144 and that will be just far enough to give us a hint if it is as interested in this.
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Re: Trough of low pressure in Western Caribbean
Well, NAVGEM is at least establishing a low.
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Re: Trough of low pressure in Western Caribbean
I see it's trying to make a comeback in the models... We are not done here folks!
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Re: Trough of low pressure in Western Caribbean
Hoax or something real regardless of how strong/weak?
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Re: Trough of low pressure in Western Caribbean
GeneratorPower wrote:
Oh boy here we go again. Is it another case of the boy who cried wolf?
Not another Halloween trick I hope!?
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Re: Trough of low pressure in Western Caribbean
Who was it that said the GFS might drop it for several runs once development grows closer? I think they're right! 

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Re: Trough of low pressure in Western Caribbean
TheStormExpert wrote:Who was it that said the GFS might drop it for several runs once development grows closer? I think they're right!
That would be me. We've seen the GFS many times before drop something in the mid-range only to bring it back later. Normally, it would be relatively clear that this is what the GFS may have been doing. However, given the other models reluctance to come on board right away, the GFS may have lulled most of us into a false sense of security, thinking it was for real. In the end, perhaps no development is what will happen, but I wouldn't bet the farm on it.
I'll be very interested in seeing what tonight's 00z runs bring.
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Re: Trough of low pressure in Western Caribbean
LarryWx wrote:GeneratorPower wrote:
Oh boy here we go again. Is it another case of the boy who cried wolf?
This is different as it now has the UKMET and a good number of the EPS members developing it.
Could those old GFS runs end up right after all after dropping it??
The 18Z EPS goes out to 144 and that will be just far enough to give us a hint if it is as interested in this.
Well, folks, the 18Z EPS 144 also has a signal that is almost as strong as the 12Z EPS 150 signal. It also suggests that anything that might be just off FL then may get trapped shortly thereafter by a rebuilding high to its north.

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Re: Trough of low pressure in Western Caribbean
LarryWx wrote:LarryWx wrote:GeneratorPower wrote:Oh boy here we go again. Is it another case of the boy who cried wolf?
This is different as it now has the UKMET and a good number of the EPS members developing it.
Could those old GFS runs end up right after all after dropping it??
The 18Z EPS goes out to 144 and that will be just far enough to give us a hint if it is as interested in this.
Well, folks, the 18Z EPS 144 also has a signal that is almost as strong as the 12Z EPS 150 signal. It also suggests that anything that might be just off FL then may get trapped shortly thereafter by a rebuilding high to its north.
Terrific... I feel like General Beringer in the movie War Games. Stay at Defcon 2, we may have to go through this after all.

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Re: Trough of low pressure in Western Caribbean
SouthFLTropics wrote:TheStormExpert wrote:Who was it that said the GFS might drop it for several runs once development grows closer? I think they're right!
That would be me. We've seen the GFS many times before drop something in the mid-range only to bring it back later. Normally, it would be relatively clear that this is what the GFS may have been doing. However, given the other models reluctance to come on board right away, the GFS may have lulled most of us into a false sense of security, thinking it was for real. In the end, perhaps no development is what will happen, but I wouldn't bet the farm on it.
I'll be very interested in seeing what tonight's 00z runs bring.
Tonights GFS runs will be telling to see if you're onto something. Good job if so.

Maybe the GFS isn't so crazy after all.
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Re: Trough of low pressure in Western Caribbean
Don't think it's really a follow-up disturbance so much as the merger of the current SW Carib low and the following tropical wave. Regardless, the resurrection on the models is interesting.


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Re: Trough of low pressure in Western Caribbean
TheStormExpert wrote:GeneratorPower wrote:
Oh boy here we go again. Is it another case of the boy who cried wolf?
Not another Halloween trick I hope!?
Joker's trick
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Re: Trough of low pressure in Western Caribbean
Spacecoast wrote:https://i.ibb.co/DfCTM1W/Capture1017a.jpg
No 18Z TC genesis technically, but as I posted it does have a surface low at hour 138 just off S FL right where the 12Z UKMET 144 has its TD.
Edit: Mods please delete this. I accidentally did a double post and the later one has a correction that was needed.
Last edited by LarryWx on Mon Oct 19, 2020 8:58 pm, edited 2 times in total.
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The posts in this forum are NOT official forecasts and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or storm2k.org. For official information, please refer to the NHC and NWS products.
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