ATL: HERMINE - Models

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Alyono
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Re: ATL: INVEST 99L - Models

#3581 Postby Alyono » Sun Aug 28, 2016 6:44 pm

RL3AO wrote:
bamajammer4eva wrote:Tallahassee NWS model discussion


At first, it seemed like today's 12z guidance was coming into
pretty good agreement with the area of disturbed weather in the
southeast Gulf. Tracks on the 12z GFS, Canadian, and UKMET were
somewhere in between Destin and Cedar Key. Intensities still
varied quite a bit, but each of those three models showed a well
defined system. Then the 12z ECMWF came in and flipped-flopped
tremendously again, now barely showing any system at all. The
ECMWF's performance with this system has been very inconsistent,
which is atypical of this model. Its performance was also poor for
the last heavy rainfall event locally. Perhaps its upgrade to 9
km resolution is causing problems with the convective
parameterization in the model, although that's just a speculation.

At any rate, the official forecast trended towards a wetter
scenario with the potential for the area of disturbed weather to
affect our forecast area by the middle to end of the week,
particularly across the southeast big bend. We continue to want
people to follow this system closely this week as the forecast
continues to be refined.


Interesting to see that in an afd. 9km is a really strange resolution to parameterize convection.


the genius who insisted upon 9km resolution should be locked in an attic for life like Bertha in Jane Eyre
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Re: ATL: INVEST 99L - Models

#3582 Postby RL3AO » Sun Aug 28, 2016 6:47 pm

Alyono wrote:
RL3AO wrote:
bamajammer4eva wrote:Tallahassee NWS model discussion




Interesting to see that in an afd. 9km is a really strange resolution to parameterize convection.


the genius who insisted upon 9km resolution should be locked in an attic for life like Bertha in Jane Eyre


I just keep thinking that the modeling experts in England know what they're doing with this right? It was tested throughly in the tropics? Right?
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Re: ATL: NINE - Models

#3583 Postby Frank2 » Sun Aug 28, 2016 6:48 pm

Sounds like someone was thinking of a 5-mile grid...
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Re: ATL: NINE - Models

#3584 Postby SunnyThoughts » Sun Aug 28, 2016 6:58 pm

Not sure if anyone posted the 18z Canadian here it is 977mb at hour 102 due south of W Fla Panhandle. http://www.tropicaltidbits.com/analysis ... 0&ypos=114
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Re: ATL: NINE - Models

#3585 Postby South Texas Storms » Sun Aug 28, 2016 7:01 pm

SunnyThoughts wrote:Not sure if anyone posted the 18z Canadian here it is 977mb at hour 102 due south of W Fla Panhandle. http://www.tropicaltidbits.com/analysis ... 0&ypos=114


That's the 12z run. The Canadian only runs at 0z and 12z.
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Re: ATL: INVEST 99L - Models

#3586 Postby bamajammer4eva » Sun Aug 28, 2016 7:02 pm

RL3AO wrote:
Alyono wrote:
RL3AO wrote:
Interesting to see that in an afd. 9km is a really strange resolution to parameterize convection.


the genius who insisted upon 9km resolution should be locked in an attic for life like Bertha in Jane Eyre


I just keep thinking that the modeling experts in England know what they're doing with this right? It was tested throughly in the tropics? Right?


They may just figure oh well not their problem since they don't get tropical weather anyways lol
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Re: ATL: INVEST 99L - Models

#3587 Postby RL3AO » Sun Aug 28, 2016 7:08 pm

bamajammer4eva wrote:
RL3AO wrote:
Alyono wrote:
the genius who insisted upon 9km resolution should be locked in an attic for life like Bertha in Jane Eyre


I just keep thinking that the modeling experts in England know what they're doing with this right? It was tested throughly in the tropics? Right?


They may just figure oh well not their problem since they don't get tropical weather anyways lol


It's still a business. If they're bad with tc's all of a sudden, why should someone pay $220,000 a year for the data?
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Re: ATL: INVEST 99L - Models

#3588 Postby CFLHurricane » Sun Aug 28, 2016 7:27 pm

RL3AO wrote:
bamajammer4eva wrote:
RL3AO wrote:
I just keep thinking that the modeling experts in England know what they're doing with this right? It was tested throughly in the tropics? Right?


They may just figure oh well not their problem since they don't get tropical weather anyways lol


It's still a business. If they're bad with tc's all of a sudden, why should someone pay $220,000 a year for the data?


That exactly what we're wondering :lol:
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Re: ATL: NINE - Models

#3589 Postby Hammy » Sun Aug 28, 2016 8:06 pm

Is there a reason the 4km and 12km NAM have different outcomes?
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Re: ATL: NINE - Models

#3590 Postby bamajammer4eva » Sun Aug 28, 2016 8:18 pm

00Z Intensity. Most are above the NHC (OFCI) though as their 5pm discussion said they are taking the Euro into consideration and staying conservative for now.

Image
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Re: ATL: NINE - Models

#3591 Postby poof121 » Sun Aug 28, 2016 8:20 pm

Hammy wrote:Is there a reason the 4km and 12km NAM have different outcomes?


The resolution would change what features can be resolved. 4km would be able to resolve smaller features better, but not necessarily correctly. The 4 km model is smaller, and models tend not to do well near their boundaries. I am not sure how they are set up, but I'm going from what I know from running ocean models.
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Re: ATL: NINE - Models

#3592 Postby Wx_Warrior » Sun Aug 28, 2016 9:04 pm

0z tropical models via James Spann @spann

Image
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Re: ATL: NINE - Models

#3593 Postby Steve » Sun Aug 28, 2016 9:20 pm

Whichever sample that is would be pretty convincing. Seemed like it would have a smaller chance of getting out in the 96 hour period. I didn't see 8 though even since that energy sort of hung around on the edge of that pressure system and maintained instability post-Fiona. If those tropical plots are right, I hope it stays minimal.
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Re: ATL: NINE - Models

#3594 Postby gatorcane » Sun Aug 28, 2016 9:42 pm

00Z NAM has a TS approaching Tampa area at 63 hours
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Re: ATL: NINE - Models

#3595 Postby AtlanticWind » Sun Aug 28, 2016 10:17 pm

Models maybe shift east since the storm moved more south?
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Re: ATL: NINE - Models

#3596 Postby mobilebay » Sun Aug 28, 2016 10:20 pm

AtlanticWind wrote:Models maybe shift east since the storm moved more south?

I know... I was scratching my head on that one
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Re: ATL: NINE - Models

#3597 Postby mobilebay » Sun Aug 28, 2016 10:21 pm

I guess they was saying it won't get as far north before turning east. I guess
Last edited by mobilebay on Sun Aug 28, 2016 10:22 pm, edited 1 time in total.
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Re: ATL: NINE - Models

#3598 Postby tolakram » Sun Aug 28, 2016 10:21 pm

Levi at TT had a good discussion of that. http://www.tropicaltidbits.com/blog/201 ... of-mexico/

It will be interesting to see where the 0Z GFS initializes. I suspect it will be too far north.
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Re: ATL: NINE - Models

#3599 Postby tolakram » Sun Aug 28, 2016 10:26 pm

0Z init looks pretty good
Image
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Re: ATL: NINE - Models

#3600 Postby tolakram » Sun Aug 28, 2016 10:30 pm

Image
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