ATL: LAURA - Models

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Re: ATL: THIRTEEN - Models

#1281 Postby SFLcane » Thu Aug 20, 2020 12:33 pm

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Re: ATL: THIRTEEN - Models

#1282 Postby eastcoastFL » Thu Aug 20, 2020 12:35 pm

HWRF starts bombing out from 60hrs to 80hrs

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Re: ATL: THIRTEEN - Models

#1283 Postby DestinHurricane » Thu Aug 20, 2020 12:35 pm

ConvergenceZone wrote:I’m going with 65 to 70 mph at landfall. I think the NHC will come down a bit on strength with a couple of models trending weaker


Models trending weaker? Besides the GFS, which models have trended weaker since NHC issued their forecast?
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Re: ATL: THIRTEEN - Models

#1284 Postby eastcoastFL » Thu Aug 20, 2020 12:36 pm

Landfall broward/palm beach.. no bueno

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Re: ATL: THIRTEEN - Models

#1285 Postby SouthFLTropics » Thu Aug 20, 2020 12:36 pm

HMON and HWRF have both been consistent with starting the aggressive intensification process once it is north of Haiti and in the SE Bahamas. Based on the NHC discussion and thinking, I don't think these possibilities can be discounted.
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Re: ATL: THIRTEEN - Models

#1286 Postby Blown Away » Thu Aug 20, 2020 12:36 pm

DestinHurricane wrote:HMON will miss S FL.


12z buries itself into SFL peninsula at 102 hours?
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Re: ATL: THIRTEEN - Models

#1287 Postby SFLcane » Thu Aug 20, 2020 12:36 pm

HWRF not gonna end well...

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Re: ATL: THIRTEEN - Models

#1288 Postby eastcoastFL » Thu Aug 20, 2020 12:37 pm

DestinHurricane wrote:
ConvergenceZone wrote:I’m going with 65 to 70 mph at landfall. I think the NHC will come down a bit on strength with a couple of models trending weaker


Models trending weaker? Besides the GFS, which models have trended weaker since NHC issued their forecast?


Which models are weaker? HMON and HWRF just ran as majors
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Re: ATL: THIRTEEN - Models

#1289 Postby gatorcane » Thu Aug 20, 2020 12:37 pm

Both the 12Z HWRF and HMON through 78 hours are a bit weaker than the prior run though even though days 4 and 5 are still strong. HMON only bombs it out really as it is nearing South Florida. Also the HMON is much faster now.
Last edited by gatorcane on Thu Aug 20, 2020 12:38 pm, edited 1 time in total.
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Re: ATL: THIRTEEN - Models

#1290 Postby supercane4867 » Thu Aug 20, 2020 12:38 pm

August climo favors a landfall. This is not late September or October.
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Re: ATL: THIRTEEN - Models

#1291 Postby DestinHurricane » Thu Aug 20, 2020 12:38 pm

eastcoastFL wrote:
DestinHurricane wrote:
ConvergenceZone wrote:I’m going with 65 to 70 mph at landfall. I think the NHC will come down a bit on strength with a couple of models trending weaker


Models trending weaker? Besides the GFS, which models have trended weaker since NHC issued their forecast?


If anything, the NHC will increase their intensity at 5. But I don't think they'll change it.
Last edited by DestinHurricane on Thu Aug 20, 2020 12:40 pm, edited 2 times in total.
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Re: ATL: THIRTEEN - Models

#1292 Postby AxaltaRacing24 » Thu Aug 20, 2020 12:39 pm

gatorcane wrote:Both the 12Z HWRF and HMON through 78 hours are a bit weaker than the prior run though even though days 4 and 5 are still strong. HMON only bombs it out really as it is nearing South Florida. Also the HMON is much faster now.

despite the struggles early, bahamas conditions appear favorable and have seemed that way for days now.
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Re: ATL: THIRTEEN - Models

#1293 Postby SouthFLTropics » Thu Aug 20, 2020 12:39 pm

That's a nasty image for Lake Okeechobee right there. That location would pile a lot of water into the SW corner of the lake near Clewiston.

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Re: ATL: THIRTEEN - Models

#1294 Postby Hurricaneman » Thu Aug 20, 2020 12:39 pm

eastcoastFL wrote:
DestinHurricane wrote:
ConvergenceZone wrote:I’m going with 65 to 70 mph at landfall. I think the NHC will come down a bit on strength with a couple of models trending weaker


Models trending weaker? Besides the GFS, which models have trended weaker since NHC issued their forecast?


Which models are weaker? HMON and HWRF just ran as majors


In fact the HMON is about the same while the HWRF is a little more aggressive
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Re: ATL: THIRTEEN - Models

#1295 Postby eastcoastFL » Thu Aug 20, 2020 12:39 pm

gatorcane wrote:Both the 12Z HWRF and HMON through 78 hours are a bit weaker than the prior run though even though days 4 and 5 are still strong. HMON only bombs it out really as it is nearing South Florida. Also the HMON is much faster now.


How much weaker? Both are 950s and I don’t think anyone expects a major before the Bahamas if it’s going to happen.
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Re: ATL: THIRTEEN - Models

#1296 Postby AutoPenalti » Thu Aug 20, 2020 12:40 pm

gatorcane wrote:Both the 12Z HWRF and HMON through 78 hours are a bit weaker than the prior run though even though days 4 and 5 are still strong. HMON only bombs it out really as it is nearing South Florida. Also the HMON is much faster now.

3-5mb weaker doesn't mean much with an average +/- error.
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Model Runs Cheat Sheet:
GFS (5:30 AM/PM, 11:30 AM/PM)
HWRF, GFDL, UKMET, NAVGEM (6:30-8:00 AM/PM, 12:30-2:00 AM/PM)
ECMWF (1:45 AM/PM)

TCVN
is a weighted averaged

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Re: ATL: THIRTEEN - Models

#1297 Postby Evil Jeremy » Thu Aug 20, 2020 12:41 pm

ConvergenceZone wrote:I’m going with 65 to 70 mph at landfall. I think the NHC will come down a bit on strength with a couple of models trending weaker


That's not far off from the 75MPH the NHC is forecasting, and given the potential for intensification in the region of the Bahamas (aside from whatever shifts the models make on a run-to-run basis), I'd say they are wise to maintain that 75MPH forecast until they are fairly certain it will either not be a Hurricane, or be a Major Hurricane on approach to Florida, and make the necessary forecast adjustments then.

We can't get to caught up in the minutia of the models this far out. It was a mistake made here during Isaias. Let's not repeat that. I get that everyone is trained to hyper-react to the latest data (that's just how everyone's minds work in this digital age), but we all need to take a deep breath, and stay focused on the long game.
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Re: ATL: THIRTEEN - Models

#1298 Postby eastcoastFL » Thu Aug 20, 2020 12:41 pm

Southern half of the state would be dealing with heavy rain and TS conditions for 2 days

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Re: ATL: THIRTEEN - Models

#1299 Postby ConvergenceZone » Thu Aug 20, 2020 12:42 pm

DestinHurricane wrote:
ConvergenceZone wrote:I’m going with 65 to 70 mph at landfall. I think the NHC will come down a bit on strength with a couple of models trending weaker


Models trending weaker? Besides the GFS, which models have trended weaker since NHC issued their forecast?


I went back and looked and while it’s just the GFS, they do look at all models when making strength forecasts. It’s just moving way too damn fast. This going to take a lot longer to build strength. I’ve seen that with previous lightning speed storms
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Re: ATL: THIRTEEN - Models

#1300 Postby SouthFLTropics » Thu Aug 20, 2020 12:42 pm

Taking aim at Andros as a major...

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