ATL: ELSA - Models

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jlauderdal
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Re: ATL: ELSA - Tropical Storm - Discussion

#881 Postby jlauderdal » Mon Jul 05, 2021 3:27 pm

eastcoastFL wrote:
NDG wrote:
AtlanticWind wrote:Euro has 991mb pressure in N Gulf that should be a Cat 3 with this storm 8-)


Actually it shows its strength fluctiating between the low 980s mb and 990s mb before landfall. This is the most aggressive I have seen the Euro with it.

https://i.imgur.com/jScZe3x.png


Euro going with the blind squirrel forecasting method. Eventually it’s going to be right. It tried to kill her off for the past week and that didn’t work so time to switch tactics.


The euro is going to make it sure it can claim some sort of verification.
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Re: ATL: ELSA - Tropical Storm - Discussion

#882 Postby LarryWx » Mon Jul 05, 2021 3:34 pm

NDG wrote:
AtlanticWind wrote:Euro has 991mb pressure in N Gulf that should be a Cat 3 with this storm 8-)


Actually it shows its strength fluctiating between the low 980s mb and 990s mb before landfall. This is the most aggressive I have seen the Euro with it.

https://i.imgur.com/jScZe3x.png


I think its overall 12Z run strength is out to lunch. These fluctuations you noted are a clue. What makes it even more out to lunch is that it has it stronger at the FL/GA border vs 6 hours earlier and then it weakens it back. The Euro has been awful with Elsa overall and its 12Z strength is way stronger than all of the other major models.
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Re: ATL: ELSA - Models

#883 Postby Spacecoast » Mon Jul 05, 2021 3:37 pm

Euro ens tracks:
Image

Euro/ GFS Ens pressure:
Image

Image
Image
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Re: ATL: ELSA - Models

#884 Postby gatorcane » Mon Jul 05, 2021 4:00 pm

12Z Euro with 100mph+ wind gusts just offshore the west coast of Florida as Elsa parallels the coast.
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ATL: ELSA - Tropical Storm - Discussion

#885 Postby AveryTheComrade » Mon Jul 05, 2021 4:41 pm

The HWRF gets Elsa stacked at the last minute and then makes it... extratropical?
Image
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Re: RE: Re: ATL: ELSA - Models

#886 Postby jlauderdal » Mon Jul 05, 2021 4:44 pm

gatorcane wrote:12Z Euro with 100mph+ wind gusts just offshore the west coast of Florida as Elsa parallels the coast.
Of course, it dissipated the storm on the east side of florida a few days ago now it goes nuclear...have to take the euro seriousely
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ATL: ELSA - Tropical Storm - Discussion

#887 Postby CFLHurricane » Mon Jul 05, 2021 5:07 pm

AveryTheComrade wrote:The HWRF gets Elsa stacked at the last minute and then makes it... extratropical?
https://cdn.discordapp.com/attachments/619419338151034911/861723276303925248/hwrf_mslp_wind_05L_16.png


Typical Elsa :lol:
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Re: RE: Re: ATL: ELSA - Models

#888 Postby HurricaneBelle » Mon Jul 05, 2021 5:11 pm

jlauderdal wrote:
gatorcane wrote:12Z Euro with 100mph+ wind gusts just offshore the west coast of Florida as Elsa parallels the coast.
Of course, it dissipated the storm on the east side of florida a few days ago now it goes nuclear...have to take the euro seriousely


I'll take it more seriously since it's a +24-36 hour run than a +96-120 one
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Re: ATL: ELSA - Models

#889 Postby Spacecoast » Mon Jul 05, 2021 5:43 pm

Elsa Model performance (track error) thus far...

Image

NHC (OFCI / OFCL) has performed amazingly well, with less than 25 nm error @ day 5.
GFS Ensembles (AEMN / AEM2) also did well, along with HMON.
GFS operational (AVNO / AVNI),and TVCN reasonably well through day 3, but not so much @ day 5.
Euro Operational, and Euro Ensembles seem to be struggling with Elsa, as mentioned by others.
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Re: RE: Re: ATL: ELSA - Models

#890 Postby eastcoastFL » Mon Jul 05, 2021 6:00 pm

HurricaneBelle wrote:
jlauderdal wrote:
gatorcane wrote:12Z Euro with 100mph+ wind gusts just offshore the west coast of Florida as Elsa parallels the coast.
Of course, it dissipated the storm on the east side of florida a few days ago now it goes nuclear...have to take the euro seriousely


I'll take it more seriously since it's a +24-36 hour run than a +96-120 one


It was also 24-36hrs out when it slammed it into the DR and opened up as a wave…so there’s that.
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Re: ATL: ELSA - Models

#891 Postby aspen » Mon Jul 05, 2021 6:27 pm

The 18z HWRF has caved to the Euro in terms of intensity and shows a 988 mbar borderline hurricane at landfall around 12z Wednesday.
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Re: ATL: ELSA - Models

#892 Postby Nimbus » Mon Jul 05, 2021 6:36 pm

aspen wrote:The 18z HWRF has caved to the Euro in terms of intensity and shows a 988 mbar borderline hurricane at landfall around 12z Wednesday.


Mid level convection is being pushed off to the east so Landfall might be Tuesday near Tampa bay if the trend continues. Hopefully that would be a weaker storm in future model runs. Euro and the HWRF strengthening the system in a relatively short range forecast, makes you wonder.
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Re: ATL: ELSA - Models

#893 Postby NDG » Mon Jul 05, 2021 6:58 pm

12z Euro may not have been so crazy of a run after all. If it is one thing that the Euro has is that it sniffes things ahead correctly in the short term. It was more correct than not in how fast it was forecasting Elsa to move across the Caribbean when the GFS and HWRF were much slower.
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Re: ATL: ELSA - Models

#894 Postby NDG » Mon Jul 05, 2021 7:01 pm

I spoke too soon, through 22 hrs so far 18z Euro is much weaker than previous 12z run.

Image
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Re: ATL: ELSA - Models

#895 Postby Spacecoast » Mon Jul 05, 2021 7:05 pm

Elsa Model Intensity error:

Image

For short term Intensity forecasts(1-3 day), CTCI, GFS Operational (AVNO), and of course NHC (especially day 4-5) have been the most accurate.
The Euro, HWFI, HWRF have been least accurate.
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Re: ATL: ELSA - Models

#896 Postby NDG » Mon Jul 05, 2021 7:09 pm

It tracks it very close to the Tampa Bay area, with solid TS force winds well inland.

Image
Image
Image
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Re: ATL: ELSA - Models

#897 Postby NDG » Mon Jul 05, 2021 7:12 pm

Landfall Cedar Key.

Image
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Re: ATL: ELSA - Models

#898 Postby gatorcane » Mon Jul 05, 2021 7:41 pm

The GFS has close to 60mph wind gusts for coastal St Petersburg and Clearwater in Pinellas County
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Re: ATL: ELSA - Models

#899 Postby caneman » Mon Jul 05, 2021 7:45 pm

gatorcane wrote:The GFS has close to 60mph wind gusts for coastal St Petersburg and Clearwater in Pinellas County


Ugh. Might lose power here on Indian Rocks Beach just south of Clearwater. The very western edge of Pinellas County
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Re: ATL: ELSA - Models

#900 Postby ronjon » Mon Jul 05, 2021 8:48 pm

caneman wrote:
gatorcane wrote:The GFS has close to 60mph wind gusts for coastal St Petersburg and Clearwater in Pinellas County


Ugh. Might lose power here on Indian Rocks Beach just south of Clearwater. The very western edge of Pinellas County


Same here in Hernando Beach. Looking like Hermine part 2. Definitely going to get significant storm surge along the coast with this trajectory and strength. Planning for low end CAT 1.
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