Intense Extratropical Low near Antarctica

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Hurricane2022
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Intense Extratropical Low near Antarctica

#1 Postby Hurricane2022 » Sun Oct 16, 2022 10:11 pm

 https://twitter.com/VortixWx/status/1581825485428129792



That's not a tropical system but wow
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Re: Intense Extratropical Low near Antarctica

#2 Postby Hurricane2022 » Mon Oct 17, 2022 12:59 am

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Sorry for the bad English sometimes...!
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Re: Intense Extratropical Low near Antarctica

#3 Postby doomhaMwx » Mon Oct 17, 2022 3:15 am


That station has now surpassed its all-time low record pressure of 895.1 mb set in 2016.

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 https://twitter.com/WxPatel/status/1581889325939437568


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Re: Intense Extratropical Low near Antarctica

#4 Postby doomhaMwx » Mon Oct 17, 2022 4:04 am

Analyzed as 906mb by Argentina Met Service earlier.
Weather Forecast for Shipping METAREA-6

WWAA02 SAWB 170000
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 17, OCTOBER 2022.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS

PART 1 GALE WARNING:
906/2022 STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 WITH GUST IN SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF FROM 17/0900
907/2022 STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR N WITH GUST IN MARGARITA BAY NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA

PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 906HPA 68S 100W MOV SE DPN EXP 73S 87W BY 18/0000 EXTENDS CFNT AT 67S 100W 66S 80W 60S 80W MOV E
RIDGE 60S 55W 66S 55W 75S 55W MOV E WKN EXP 60S 25W 66S 25W 72S 25W BY 18/0000


00Z GFS and UKMET model initializations:

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Re: Intense Extratropical Low near Antarctica

#5 Postby kevin » Mon Oct 17, 2022 4:06 am

Is this the most intense extratropical cyclone ever recorded? I can't find any mention of an extratropical cyclone deeper than the Braer Storm, which was 'only' 914 mb. It might also be the case that in the past there were also cyclones like these near Antarctica, but that they just spawn in an area so remote that we never really cared/knew about them. Especially before the satellite era.
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Re: Intense Extratropical Low near Antarctica

#6 Postby doomhaMwx » Mon Oct 17, 2022 7:31 am

Argentina continues to analyze it as a very intense storm with a central pressure of 905mb at 09Z. The latest bulletin mentions that it's now weakening.

Image
Weather Forecast for Shipping METAREA-6

WWAA02 SAWB 171200
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 17, OCTOBER 2022.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS

PART 1 GALE WARNING:
908/2022 STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 WITH GUST IN SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF UNTIL 17/1800
909/2022 STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR S WITH GUST IN NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA UNTIL 18/0600

PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 905HPA 70S 90W MOV S WKN EXP 73S 90W BY 18/0600 EXTENDS OFNT AT 70S 100W 73S 90W 70S 66W MOV S
LOW 953HPA 68S 60W MOV SE INTSF EXP 73S 50W BY 18/1200 EXTENDS CFNT AT 68S 60W 64S 55W 60S 60W MOV E
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Re: Intense Extratropical Low near Antarctica

#7 Postby Iceresistance » Mon Oct 17, 2022 1:02 pm

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Bill 2015 & Beta 2020

Winter 2020-2021 :cold:

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Re: Intense Extratropical Low near Antarctica

#8 Postby doomhaMwx » Mon Oct 17, 2022 7:30 pm

The system has weakened to 930mb as of 21Z.
Weather Forecast for Shipping METAREA-6

WWAA02 SAWB 180000
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 18, OCTOBER 2022.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS

PART 1 GALE WARNING:
910/2022 STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN MARGARITA BAY NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA

PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 930HPA 72S 88W MOV S WKN EXTENDS CFNT AT 73S 90W 72S 75W 66S 80W MOV E
LOW 952HPA 68S 38W MOV E NC EXTENDS CFNT AT 69S 40W 65S 35W 60S 55W MOV E
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Re: Intense Extratropical Low near Antarctica

#9 Postby Ptarmigan » Mon Oct 17, 2022 8:56 pm

That is a really intense storm right there. :eek:
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