2018 Tropics: Global Model Runs Discussion (Out to day 16)

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NotSparta
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#261 Postby NotSparta » Mon May 14, 2018 8:57 am

Shell Mound wrote:If the current Gulf low were to somehow become Alberto (as seems increasingly possible) and Beryl were to follow in its wake, the back-to-back pre-season storms would very likely presage an inactive peak season. While pre-season activity in itself does not necessarily imply a dead heart of the season, El Niño years are almost always associated with an anomalously active pre-season/early season and a correspondingly dead peak season. La Niña is often the opposite: a slow start followed by a hyperactive peak season, with activity continuing well into late season (and sometimes beyond, even after New Year's Eve). So I think that the increasing prospects of both multiple pre-season storms and the increasing likelihood of El Niño by peak season go together nicely. Thus the odds of a very inactive season, with activity weighted toward pre-season/early season rather than peak/late season, are going way up at this time. So the model trends and sensible weather/climate trends both tend to support this outcome. Additionally, the fact that Alberto may very well turn out to be a subtropical system in the Gulf could indicate unfavourable conditions for classic tropical storm structures even in the subtropics, which would imply a season that is even more hostile than I may have thought. I could be wrong, but data are data. Hmm...


El Nino?? It's becoming increasingly likely that it'll be weak and late. Also, that last point doesn't presage an even more inactive season - all it is is May climo. I think you're getting to into this.
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#262 Postby stormlover2013 » Mon May 14, 2018 9:04 am

Yeah, if a El nino happens it will be late like October or November, My meteorologist buddy is looking at Neutral conditions.
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#263 Postby Alyono » Mon May 14, 2018 12:07 pm

GFS has dropped the Caribbean system
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#264 Postby NotSparta » Mon May 14, 2018 12:08 pm

Alyono wrote:GFS has dropped the Caribbean system


I knew this would happen, once the euro picked it up I knew the GFS would have to drop it :lol:
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#265 Postby LarryWx » Mon May 14, 2018 12:08 pm

For the 1st time in many days, the latest GFS (12Z) has no TS+
form in or near the W Caribbean/Central America in its entire run. All it has is a weak low there that at most is a TD and it moves to near FL 5/27-9 as only a weak (1005 mb) low.
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#266 Postby gatorcane » Mon May 14, 2018 1:59 pm

1008MB low on the 12Z ECMWF at 240 hours:

Image
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#267 Postby gatorcane » Mon May 14, 2018 2:50 pm

FV3 GFS with genesis starting around hour 150, here is the 168 hour image though given the latest GFS (old) and ECMWF showing a broad low with no significant development got to think the FV3 is too bullish:

Image
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#268 Postby NDG » Mon May 14, 2018 3:54 pm

Euro likes the idea of a relatively weak sheared system like we usually see this time of the year in the NW Caribbean.

Image
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#269 Postby Kingarabian » Mon May 14, 2018 3:57 pm

12Z EPS members seem to be split in 3 groups. Group showing western Caribbean development, another group shows EPAC development, and some have no development.
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#270 Postby chaser1 » Mon May 14, 2018 4:09 pm

gatorcane wrote:FV3 GFS with genesis starting around hour 150, here is the 168 hour image though given the latest GFS (old) and ECMWF showing a broad low with no significant development got to think the FV3 is too bullish:

Image


I'll never say another disparaging thing about our favorite "Crazy Uncle" (CMC); there's no doubt that the GFS's little brother FV3 must be on crack :roflmao:
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#271 Postby gatorcane » Mon May 14, 2018 4:13 pm

chaser1 wrote:
gatorcane wrote:FV3 GFS with genesis starting around hour 150, here is the 168 hour image though given the latest GFS (old) and ECMWF showing a broad low with no significant development got to think the FV3 is too bullish: https://s9.postimg.cc/s5mtiqqe7/fv3p_ms ... atl_28.png


I'll never say another disparaging thing about our favorite "Crazy Uncle" (CMC); there's no doubt that the GFS's little brother FV3 must be on crack :roflmao:


Get's more ridiculous if you look out even further in the 12Z FV3 run. I will say it is quite consistent with the 06Z run though I give it that! Seems we need to tone down this model on its intensity modelling. :lol:
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#272 Postby Kingarabian » Mon May 14, 2018 6:22 pm

Looks like a bad flooding event for the CA on the 18z GFS, 240 hours out.
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#273 Postby floridasun78 » Mon May 14, 2018 8:36 pm

hope we dont rain out long weekend here in fl or way were gulf coast i have plan like you do long weekend we air show doing long weekend look gfs gave up on system in carribbean
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#274 Postby LarryWx » Tue May 15, 2018 1:14 am

floridasun78 wrote:hope we dont rain out long weekend here in fl or way were gulf coast i have plan like you do long weekend we air show doing long weekend look gfs gave up on system in carribbean


Florida,
Uh oh, I think you jinxed the last day of your long weekend, Memorial Day. The 0Z GFS hits you hard with a cat 2 hurricane on that day. Of course, I don't believe it and think that the GFS is out of its mind.
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#275 Postby Kingarabian » Tue May 15, 2018 2:12 am

00z Euro is not too enthusiastic with it compared to previous runs. Broad area of weak low pressure moving north into the GOM.
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#276 Postby Cpv17 » Tue May 15, 2018 2:51 am

Kingarabian wrote:00z Euro is not too enthusiastic with it compared to previous runs. Broad area of weak low pressure moving north into the GOM.


I think that’s because the vorticity is over more land on this run than previous runs which isn’t allowing development.
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#277 Postby TexasStorm » Tue May 15, 2018 7:44 am

Seems that the GFS went out and got drunk again last night. Showing a low end CAT 2 in the Caribbean in between Yucatan and Cuba around the 28th. :spam:
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#278 Postby CyclonicFury » Tue May 15, 2018 2:02 pm

Euro continues to develop a weak low in the Northwestern Caribbean from the gyre at hour 192-240.
Image
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#279 Postby LarryWx » Tue May 15, 2018 2:16 pm

The 12Z FV3 develops a very tiny 996 mb TS 75 miles offshore in the Apalachee Bay 5/21. That looks like still another phantom. The SSTs up there are not even warm enough for tropical development! I have a feeling this is going to be a looooong season of phantoms. :(
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Re: 2018 Tropics: Global Model Runs Discussion (Out to day 16)

#280 Postby Hammy » Tue May 15, 2018 8:21 pm

LarryWx wrote:The 12Z FV3 develops a very tiny 996 mb TS 75 miles offshore in the Apalachee Bay 5/21. That looks like still another phantom. The SSTs up there are not even warm enough for tropical development! I have a feeling this is going to be a looooong season of phantoms. :(


Isn't this basically the norm for May and June though?
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