ATL: FIONA - Models

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Re: ATL: FIONA - Models

#201 Postby chaser1 » Thu Sep 15, 2022 10:30 am

CFLHurricane wrote:I don’t buy the sudden turn north next Tuesday the GFS, NAVGEM, and ICON are showing. I agree OTS is the likeliest outcome but the turn is just too tidy a solution.


I tend to agree for the following reason. If we were to take the Fiona's vertical structural integrity as a "status quo", and then magically place the storm just north of P.R. or the Rock, then sure it would likely begin to recurve. On the other hand though, if one were to project near-term weakening due to less favorable conditions exacerbated by GA land interaction then it would seem less reasonable that a vigorous MLC would still exist. A far more shallow system or even a remnant sharp wave would likely continue to progress generally towards the west or WNW. The EURO ensembles that SFLcane posted about an hour ago clearly shows members with stronger solutions recurving around 70-75W. The faster and weaker members depict a weaker and distinctly more westward track. I think Fiona will have weakened to a TW or even an open wave before reaching Puerto Rico's longitude. Further interaction with "the Rock" would then seem to prevent any opportunity for re-development at that time. That would suggest continued motion with the overall lower level flow at least unless regeneration a little further west were to then occur.
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Re: ATL: FIONA - Models

#202 Postby tolakram » Thu Sep 15, 2022 10:48 am

GFS 12Z running

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Re: ATL: FIONA - Models

#203 Postby Iceresistance » Thu Sep 15, 2022 10:55 am

tolakram wrote:GFS 12Z running

https://i.imgur.com/3jCOPhU.png


It's already even faster with Fiona than the 6z run.
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Re: ATL: FIONA - Models

#204 Postby chaser1 » Thu Sep 15, 2022 10:55 am

AutoPenalti wrote:
NDG wrote:Close up look of the 06z Euro run.

https://i.imgur.com/GQOfH3v.gif

That has to be a center reformation on the Euro, there's no way it does an immediate sharp turn like that.


Yup, if 65W - 70W is where more fertile conditions might exist then any center reformation, reincarnation, or sudden deepening would suggest at least some gain in latitude to then occur (unless forecast timing or values of S.E. CONUS mid level troughing were to not fully verify).
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Re: ATL: FIONA - Models

#205 Postby tolakram » Thu Sep 15, 2022 10:56 am

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Re: ATL: FIONA - Models

#206 Postby tolakram » Thu Sep 15, 2022 10:59 am

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Re: ATL: FIONA - Models

#207 Postby tolakram » Thu Sep 15, 2022 11:00 am

GFS trend
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Re: ATL: FIONA - Models

#208 Postby Iceresistance » Thu Sep 15, 2022 11:01 am

GFS has a Puerto Rico landfall 84 hours out, it has trended SW compared to the previous runs.
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Re: ATL: FIONA - Models

#209 Postby tolakram » Thu Sep 15, 2022 11:02 am

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Re: ATL: FIONA - Models

#210 Postby aspen » Thu Sep 15, 2022 11:02 am

ICON still recurves Fiona on the east side of PR, and it becomes a Cat 4 north of the islands.
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Re: ATL: FIONA - Models

#211 Postby tolakram » Thu Sep 15, 2022 11:05 am

12Z ICON
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Re: ATL: FIONA - Models

#212 Postby cycloneye » Thu Sep 15, 2022 11:05 am

12z GFS over me.

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Re: ATL: FIONA - Models

#213 Postby NDG » Thu Sep 15, 2022 11:06 am

Both latest 12z GFS and 06z Euro show improving UL conditions when it gets to the Leeward Islands, the reason why both models show Fiona starting the intensification process by then.

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Last edited by NDG on Thu Sep 15, 2022 11:08 am, edited 1 time in total.
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Re: ATL: FIONA - Models

#214 Postby Iceresistance » Thu Sep 15, 2022 11:07 am

12z CMC is through the shredder. (Hispaniola)
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Re: ATL: FIONA - Models

#215 Postby tolakram » Thu Sep 15, 2022 11:13 am

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Re: ATL: FIONA - Models

#216 Postby tolakram » Thu Sep 15, 2022 11:14 am

CMC weak but now moving it NW sooner.

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Re: ATL: FIONA - Models

#217 Postby AutoPenalti » Thu Sep 15, 2022 11:16 am

GFS no florida threat this run. Avenue opens up.
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Re: ATL: FIONA - Models

#218 Postby SFLcane » Thu Sep 15, 2022 11:18 am

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Re: ATL: FIONA - Models

#219 Postby LarryWx » Thu Sep 15, 2022 11:19 am

12Z UKMET
MET OFFICE TROPICAL CYCLONE GUIDANCE FOR NORTH-EAST PACIFIC AND ATLANTIC

GLOBAL MODEL DATA TIME 1200UTC 15.09.2022

TROPICAL STORM FIONA ANALYSED POSITION : 16.3N 53.7W

ATCF IDENTIFIER : AL072022

LEAD CENTRAL MAXIMUM WIND
VERIFYING TIME TIME POSITION PRESSURE (MB) SPEED (KNOTS)
-------------- ---- -------- ------------- -------------
1200UTC 15.09.2022 0 16.3N 53.7W 1008 39
0000UTC 16.09.2022 12 16.5N 56.3W 1007 40
1200UTC 16.09.2022 24 16.7N 58.9W 1007 37
0000UTC 17.09.2022 36 17.0N 61.4W 1006 32
1200UTC 17.09.2022 48 17.4N 63.5W 1006 34
0000UTC 18.09.2022 60 18.1N 65.4W 1005 36
1200UTC 18.09.2022 72 17.8N 67.5W 1004 43
0000UTC 19.09.2022 84 19.2N 68.9W 1001 43
1200UTC 19.09.2022 96 19.9N 69.8W 997 56
0000UTC 20.09.2022 108 20.7N 71.2W 994 54
1200UTC 20.09.2022 120 21.3N 72.0W 996 51
0000UTC 21.09.2022 132 22.0N 72.2W 993 47
1200UTC 21.09.2022 144 23.1N 72.2W 990 48
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Re: ATL: FIONA - Models

#220 Postby Blown Away » Thu Sep 15, 2022 11:20 am

cycloneye wrote:12z GFS over me.

https://i.imgur.com/SomrbyO.gif


Yeah, PR could end up with a hurricane.
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