2021 Global Model Runs Discussion (Out thru day 16)

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SFLcane
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1501 Postby SFLcane » Fri Sep 10, 2021 3:04 pm

LarryWx wrote:


Whereas there are many of those in the process of a safe recurve, there are a decent number of those on the left side that already either hit the NE Caribbean and/or would be potential threats to the Bahamas, Bermuda, and possibly even the US E coast in some cases within a few days later:


Larry there will be a building ridge potentially thx to the typhoon. Those ensembles a good chunk we’re coming further west and i expect eps to keep trending that Way.
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1502 Postby AlphaToOmega » Fri Sep 10, 2021 3:05 pm


So much for those people who said no Cape Verde threats for the rest of the season
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1503 Postby Shell Mound » Fri Sep 10, 2021 3:18 pm

AlphaToOmega wrote:

So much for those people who said no Cape Verde threats for the rest of the season

Based on climatology/timing, CV threats to the CONUS are likely finished, but this upcoming system could very well impact the Islands, including Bermuda.
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1504 Postby SFLcane » Fri Sep 10, 2021 3:19 pm

Shell Mound wrote:
AlphaToOmega wrote:

So much for those people who said no Cape Verde threats for the rest of the season

Based on climatology/timing, CV threats to the CONUS are likely finished, but this upcoming system could very well impact the Islands, including Bermuda.


Stop!
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1505 Postby Category5Kaiju » Fri Sep 10, 2021 3:21 pm

Shell Mound wrote:
AlphaToOmega wrote:

So much for those people who said no Cape Verde threats for the rest of the season

Based on climatology/timing, CV threats to the CONUS are likely finished, but this upcoming system could very well impact the Islands, including Bermuda.


Yeah but it looks like it will be passing through a Hebert Box, so…
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1506 Postby CyclonicFury » Fri Sep 10, 2021 3:21 pm

Shell Mound wrote:
AlphaToOmega wrote:

So much for those people who said no Cape Verde threats for the rest of the season

Based on climatology/timing, CV threats to the CONUS are likely finished, but this upcoming system could very well impact the Islands, including Bermuda.

Gloria and Georges would like a word
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1507 Postby Shell Mound » Fri Sep 10, 2021 3:23 pm

CyclonicFury wrote:
Shell Mound wrote:
AlphaToOmega wrote:So much for those people who said no Cape Verde threats for the rest of the season

Based on climatology/timing, CV threats to the CONUS are likely finished, but this upcoming system could very well impact the Islands, including Bermuda.

Gloria and Georges would like a word

There are quite a few TUTTs and shortwaves passing through on the 12Z EC guidance, so there is a lot of opportunity for a N turn beyond the Islands.
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1508 Postby AutoPenalti » Fri Sep 10, 2021 3:26 pm

Shell Mound wrote:
CyclonicFury wrote:
Shell Mound wrote:Based on climatology/timing, CV threats to the CONUS are likely finished, but this upcoming system could very well impact the Islands, including Bermuda.

Gloria and Georges would like a word

There are quite a few TUTTs and shortwaves passing through on the 12Z EC guidance, so there is a lot of opportunity for a N turn beyond the Islands.

There hasn't been chatter about that. Typhoon Chutulu's injection into the NE will likely be amplifying both the ridge and trough. It's just a matter of where this wave will be at by that time.
Last edited by AutoPenalti on Fri Sep 10, 2021 3:28 pm, edited 1 time in total.
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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: 2021 Global Model Runs Discussion (Out thru day 16)

#1509 Postby SFLcane » Fri Sep 10, 2021 3:27 pm

Shell Mound wrote:
CyclonicFury wrote:
Shell Mound wrote:Based on climatology/timing, CV threats to the CONUS are likely finished, but this upcoming system could very well impact the Islands, including Bermuda.

Gloria and Georges would like a word

There are quite a few TUTTs and shortwaves passing through on the 12Z EC guidance, so there is a lot of opportunity for a N turn beyond the Islands.


Wait, according to you This season was going to underperform yet we have had 3 majors already. Enough with the down casting it’s really tiring and getting old frankly,
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1510 Postby AlphaToOmega » Fri Sep 10, 2021 3:29 pm

Shell Mound wrote:
CyclonicFury wrote:
Shell Mound wrote:Based on climatology/timing, CV threats to the CONUS are likely finished, but this upcoming system could very well impact the Islands, including Bermuda.

Gloria and Georges would like a word

There are quite a few TUTTs and shortwaves passing through on the 12Z EC guidance, so there is a lot of opportunity for a N turn beyond the Islands.

What I am seeing on the ECENS ensembles is a strong Azores-Bermuda High, which would promote landfalling storms.
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1511 Postby SFLcane » Fri Sep 10, 2021 3:31 pm

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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1512 Postby Category5Kaiju » Fri Sep 10, 2021 3:37 pm

AutoPenalti wrote:
Shell Mound wrote:
CyclonicFury wrote:Gloria and Georges would like a word

There are quite a few TUTTs and shortwaves passing through on the 12Z EC guidance, so there is a lot of opportunity for a N turn beyond the Islands.

There hasn't been chatter about that. Typhoon Chutulu's injection into the NE will likely be amplifying both the ridge and trough. It's just a matter of where this wave will be at by that time.


I agree; if anything, mets like Eric Webb and Andy Hazelton have been hinting mainly at the idea that this thing could get decently west. Early models do not show a clear recurve like with Larry. Not sure where the source of the many TUTTs as Shell Mound states is coming from honestly.
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1513 Postby gatorcane » Fri Sep 10, 2021 3:40 pm

12Z CMC ensembles in the long-range:
Image
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1514 Postby otowntiger » Fri Sep 10, 2021 4:08 pm

gatorcane wrote:
Teban54 wrote:
Spacecoast wrote:0z NASA / GMAO....
AEW wave goes NW
Bahama system into Ga. /SC @ 240Hr

[url]https://i.ibb.co/1n0fHfq/Animatione.gif [/url]

Hey, now the GFS at least has a little more peer support for the GA storm! :lol:


When we are having to look at the long-range NASA and ICON models for CONUS threats, that tells me things are looking good for the CONUS at the moment. Also latest GFS shows really nothing of concern. I do see a large eastern CONUS trough in the long-range which looks to help turn the tiny near naked swirl between the Lesser Antilles and Africa northward east of the Bahamas.
Good point. But of course as many here will point out the long range models are anything but conclusive. :wink: So anything can happen even in the relative short term that may not be accurately depicted by any model.
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1515 Postby aspen » Fri Sep 10, 2021 4:17 pm

Shell Mound wrote:
AlphaToOmega wrote:

So much for those people who said no Cape Verde threats for the rest of the season

Based on climatology/timing, CV threats to the CONUS are likely finished, but this upcoming system could very well impact the Islands, including Bermuda.

We can only hope it turns out to sea, but even if it misses the CONUS, it could be a problem for the Lesser Antilles and NW Caribbean like Maria, which formed at a similar time and had a similar track to what is being modeled.
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1516 Postby otowntiger » Fri Sep 10, 2021 4:21 pm

AlphaToOmega wrote:

So much for those people who said no Cape Verde threats for the rest of the season
So are we now certain there will be a Cape Verde threat? Is this based on just one model run?
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1517 Postby SFLcane » Fri Sep 10, 2021 4:26 pm

Got a serious concern for this one folks! Unfortunately The typhoon will potentially be alternating the long wave pattern to more ridging.

Scary vibes…
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1518 Postby Stormybajan » Fri Sep 10, 2021 4:31 pm

SFLcane wrote:Got a serious concern for this one folks! Unfortunately The typhoon will potentially be alternating the long wave pattern to more ridging.

Scary vibes…

Hmmmmmmmmm I'll have to wait for a few days of consistency before I really get my guard up, we know how the Euro is with waves in Africa and how different it is AFTER they exit. Right now about every scenario is still on the table
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1519 Postby aspen » Fri Sep 10, 2021 4:39 pm

SFLcane wrote:Got a serious concern for this one folks! Unfortunately The typhoon will potentially be alternating the long wave pattern to more ridging.

Scary vibes…

I started calling Chanthu “Chthulu” are a joke, but I might’ve just jinxed us if it pumps the ridge and sends that low-rider into the islands or CONUS.
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Re: 2021 Global Model Runs Discussion (Out thru day 16)

#1520 Postby Iceresistance » Fri Sep 10, 2021 4:46 pm

Shell Mound wrote:
AlphaToOmega wrote:

So much for those people who said no Cape Verde threats for the rest of the season

Based on climatology/timing, CV threats to the CONUS are likely finished, but this upcoming system could very well impact the Islands, including Bermuda.


The CV threats are not over! There has been October Cape Verde Hurricanes before! (Joan-Miriam 1988)
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