ATL: TEN - Models

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Emmett_Brown
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Re: ATL: INVEST 92L - Models

#361 Postby Emmett_Brown » Thu Aug 17, 2017 9:22 am

tolakram wrote:GFS did not have it until Sunday afternoon. Here's the 0Z Sunday run that at least showed the disturbance, prior to that it was doing what it's doing now and completely losing any vorticity. The 12Z Sunday run had a decent TS or hurricane. What I find interesting is that both models seemed to come around near the same time, as if something (inputs) changed in a pretty big way. He 12Z Sunday euro run had a much stronger storm and both models locked on to a similar solution from that point on.

Image


Advisories for Gert were initiated at 3Z Sunday. Seems like that's when the models began to see it. After realizing Gert was there, the models were also paying catch up with Gert's intensity, under forecasting near term strength.
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Re: ATL: INVEST 92L - Models

#362 Postby Blown Away » Thu Aug 17, 2017 9:30 am

Yesterday's models showed a massive HP pushing 92L as it approached 75W, whereas today's models hinting a trough picking up 92L before/after Florida... 92L still 2400+ miles away from Florida/CONUS, so I'm sure much will change...
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Re: ATL: INVEST 92L - Models

#363 Postby Happy Pelican » Thu Aug 17, 2017 9:35 am

Stormcenter wrote:I believe 92L will be a player somewhere along the U.S. coastline.



Absolutely agree with you.
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Re: ATL: INVEST 92L - Models

#364 Postby Bocadude85 » Thu Aug 17, 2017 9:38 am

Blown Away wrote:Yesterday's models showed a massive HP pushing 92L as it approached 75W, whereas today's models hinting a trough picking up 92L before/after Florida... 92L still 2400+ miles away from Florida/CONUS, so I'm sure much will change...


What models show a recurve before Florida?
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Re: ATL: INVEST 92L - Models

#365 Postby SouthFLTropics » Thu Aug 17, 2017 9:42 am

Bocadude85 wrote:
Blown Away wrote:Yesterday's models showed a massive HP pushing 92L as it approached 75W, whereas today's models hinting a trough picking up 92L before/after Florida... 92L still 2400+ miles away from Florida/CONUS, so I'm sure much will change...


What models show a recurve before Florida?


We aren't seeing a "recurve" just yet but the latest models are showing a trend to bring 92L north somewhere around the peninsula. Could be in the GOM, could be across the state, could be across the Bahamas. Last nights 00z CMC brings a decent storm to the panhandle while the Euro develops a depression in the straights and brings it up and over the peninsula. FWIW another model showed 92L crossing the peninsula and then forming in the GOM, dipping south and then getting sent back east across central Florida. Would not surprise me to see more shifts north including some that are up and out in future runs.
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Re: ATL: INVEST 92L - Models

#366 Postby Steve » Thu Aug 17, 2017 9:48 am

Blown Away wrote:Yesterday's models showed a massive HP pushing 92L as it approached 75W, whereas today's models hinting a trough picking up 92L before/after Florida... 92L still 2400+ miles away from Florida/CONUS, so I'm sure much will change...


Joe B has it in the SE Gulf on Tuesday just off the Keys. I don't know. I guess if 91L stays far enough south, the next system in the pattern might cross over or through the islands and be in the Gulf. I think it would be an Eastern Gulf threat if anything. EC had that this past weekend at 240 hours. I don't know. SFWMD model consensus from 12z has it aimed up through the Southern Bahamas just north of the big islands toward FL. I don't know if I buy a Gulf solution. It's possible but still too far out to tell. If necessary, I will stockpile up this weekend.
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Re: ATL: INVEST 92L - Models

#367 Postby adam0983 » Thu Aug 17, 2017 9:50 am

Until invest 92L develops into a tropical depression all model runs should not be taken seriously. At this point people stating that this storm will hit the east coast is very foolish. This is just a few showers now nothing more. Just an opinion not a forecast.
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Re: ATL: INVEST 92L - Models

#368 Postby RL3AO » Thu Aug 17, 2017 9:53 am

adam0983 wrote:Until invest 92L develops into a tropical depression all model runs should not be taken seriously. At this point people stating that this storm will hit the east coast is very foolish. This is just a few showers now nothing more. Just an opinion not a forecast.


1) This is the models thread. We talk about the models and what they show.
2) People on here were saying the same thing about 36 hours ago with PTC 9 being just a few showers.
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Re: ATL: INVEST 92L - Models

#369 Postby SouthFLTropics » Thu Aug 17, 2017 9:55 am

I found this little snippet from the 11:00AM discussion of PTC 9 interesting in regards to the models and what they are showing for that system:

The system is in an area of moderate easterly vertical shear, and
the large-scale models suggest that light/moderate shear should
continue through the forecast period. This seems favorable for
strengthening, and the SHIPS and LGEM models show slow, but steady,
intensification. However, the GFS and ECMWF models forecast the
system to degenerate to an easterly wave over the central Caribbean
Sea, possibly due to dry air entrainment. The intensity forecast
follows the trend of the SHIPS/LGEM models, but it respects the
GFS/ECMWF forecasts by being on the low side of the intensity
guidance envelope.
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Re: ATL: INVEST 92L - Models

#370 Postby Steve » Thu Aug 17, 2017 10:02 am

adam0983 wrote:Until invest 92L develops into a tropical depression all model runs should not be taken seriously. At this point people stating that this storm will hit the east coast is very foolish. This is just a few showers now nothing more. Just an opinion not a forecast.


I don't think anyone is taking the specific runs seriously. I think you have to consider the potential threat though. It's only like 6 or 7 days out, and nothing is really organizing as far east as it is now (mid 40's West). NHC gives it 50%/60% so their chances are better than even that it develops. Models should greatly improve once we're inside of 120 hours until possible impacts with the US. There is decent consensus overall with the track.
https://www.sfwmd.gov/weather-radar/hur ... odel-plots (obviously click Storm 92).
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Re: ATL: INVEST 92L - Models

#371 Postby Blown Away » Thu Aug 17, 2017 10:12 am

Image
NAVGEM showing a turn late...
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Re: ATL: INVEST 92L - Models

#372 Postby SouthFLTropics » Thu Aug 17, 2017 10:26 am

12z GFS Initialized

Image
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Re: ATL: INVEST 92L - Models

#373 Postby SouthFLTropics » Thu Aug 17, 2017 10:30 am

12 Hours

Image
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Re: ATL: INVEST 92L - Models

#374 Postby Hurricaneman » Thu Aug 17, 2017 10:31 am

Blown Away wrote:Image
NAVGEM showing a turn late...

I see the navgem has come aboard for this system now it seem its only the GFS that does nothing but let's see this run before I say that
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Re: ATL: INVEST 92L - Models

#375 Postby SouthFLTropics » Thu Aug 17, 2017 10:35 am

30 Hours

Image
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Re: ATL: INVEST 92L - Models

#376 Postby SouthFLTropics » Thu Aug 17, 2017 10:37 am

36 Hours

Image
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Re: ATL: INVEST 92L - Models

#377 Postby Hurricaneman » Thu Aug 17, 2017 10:38 am

SouthFLTropics wrote:36 Hours

Image

Definitely a stronger vortex and seem to be just outside the high shear, that would be bad news if this trend continues
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Re: ATL: INVEST 92L - Models

#378 Postby blp » Thu Aug 17, 2017 10:40 am

The ULL North of 92l is not digging as much SW as previous run on 06z. I think that will help keep shear to a lesser degree this run.
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Re: ATL: INVEST 92L - Models

#379 Postby SouthFLTropics » Thu Aug 17, 2017 10:41 am

48 Hours

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Re: ATL: INVEST 92L - Models

#380 Postby SouthFLTropics » Thu Aug 17, 2017 10:43 am

I think the proximity of PTC 9 may be an issue in the early going. WXMAN mentioned this possibility on the discussion board.
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