1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-12-03, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 484: LOW 999HPA AT 48S 61W MOV SE DEEPENING EXPECTED 50S 41W BY 04/1200
WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST BETWEEN 51S-55S 40W-50W FROM
04/0900
WARNING 483: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM W WITH GUST
BETWEEN 45S-50S AND 20W-40W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
021400 UTC 1.SEA ICE LIMIT 5830S 02000W 5611S 02546W 5736S 02958W 5833S 03142W
5757S 03800W 5736S 04312W 5753S 04820W 5927S 05314W 6038S 05517W 6141S 05718W
6411S 06356W 6637S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5224S 04017W 32X24NM
A74A 5502S 02626W 27X17NM A77 5252S 04216W 27X4NM A76C 5908S 03848W 16X7NM B15AB
5801S 04614W 11X4NM A23G 5329S 03842W 11X3NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 5448S 04006W 9X2NM ICEBERG2 5124S 03440W 3X1NM ICEBERG3 5254S 03907W
7X3NM ICEBERG4 4718S 02107W 4X2NM ICEBERG5 5053S 03708W 6X2NM ICEBERG6 5204S
03847W 3X3NM ICEBERG7 5154S 04120W 2X2NM ICEBERG8 5318S 03954W 3X3NM ICEBERG9
5146S 03549W 2X1NM ICEBERG10 5117S 03827W 4X2NM ICEBERG11 5305S 03718W 3X1NM
ICEBERG12 5247S 04011W 4X1NM ICEBERG13 5207S 04152W 2X1NM ICEBERG14 4942S 03839W
2X1NM ICEBERG15 4939S 03828W 2X1NM ICEBERG16 5206S 04154W 3X1NM ICEBERG17 5402S
03959W 2X1NM ICEBERG18 5153S 04135W 2X1NM ICEBERG19 5205S 04149W 2X2NM ICEBERG20
5046S 02210W 3X1NM ICEBERG21 5214S 04058W 2X1NM ICEBERG22 5549S 04131W 4X1NM
ICEBERG23 5044S 03747W 9X6NM ICEBERG24 5118S 03633W 8X2NM ICEBERG25 5119S 04039W
7X2NM ICEBERG26 5224S 04034W 4X2NM ICEBERG27 5002S 02922W 2X1NM ICEBERG28 5202S
03949W 4X2NM ICEBERG29 5229S 03949W 4X1NM ICEBERG30 5231S 03949W 2X1NM ICEBERG31
5228S 03958W 2X1NM 4.ICEBERGS AREA A 6000S 02000W 4657S 02000W 4600S 03100W
5900S 03200W B 5900S 03200W 4600S 03100W 4800S 04100W 5900S 04100W C 5900S
04100W 4800S 04100W 6000S 06716W 6600S 06716W
LOW 999HPA 48S 61W MOV SE DPN EXP 50S 41W BY 04/1200 EXTENDS CFNT AT 48S 61W 44S
60W 41S 63W MOV SE EXP 50S 41W 48S 41W 45S 43W BY 04/1200
LOW 989HPA 52S 43W MOV E WKN EXTENDS CFNT AT 52S 43W 48S 46W 45S 52W MOV E
HIGH 1022HPA 36S 26W MOV E INTSF
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-12-4
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 3/4 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR N 3/5 WITH GUSTS MIST DISSIPATING VIS GOOD OCNL
MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR N 3/5 WITH GUSTS MIST DISSIPATING VIS GOOD
OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 3/5 WITH GUSTS VIS GOOD OCNL
MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 3/4 VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): NW 3 BACK SE BACK N 3/4 VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): W 4/3 BACK N 3/5 BACK W 4/5 WITH GUSTS
VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 4/5 WITH GUSTS VEER SECTOR N 5
WITH GUSTS PROB OF ISOL RAIN VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 5/6 WITH GUSTS TEMPO VEER SECTOR N 5
WITH GUSTS PROB OF ISOL RAIN VIS MODERATE
ISLAS MALVINAS COASTS: SECTOR W 3/5 WITH GUSTS PROB OF ISOL DRIZZLE VIS
MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR W 3 VEER SECTOR N VEER
SECTOR E 4/6 WITH GUSTS BY 4/0900 PROB OF RAIN STORMS VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 3/5 WITH GUSTS PROB OF ISOL RAIN IMPR TOWARDS THE
END OF THE PERIOD VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) S OF 45S: SECTOR W 5/8 WITH GUSTS PROB
OF RAIN VIS POOR
REST OF THE AREA: NW 6/5 WITH GUSTS VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W - N OF 45S: NW 6 WITH GUSTS
PROB OF ISOL RAIN TOWARDS THE END OF THE PERIOD VIS MODERATE
E OF 50W - S OF 45S: NW 6 WITH GUSTS BACK SECTOR W 4/6 WITH GUSTS TEMPO VEER
SECTOR N 6 WITH GUSTS PROB OF ISOL RAIN TOWARDS THE END OF THE PERIOD VIS
MODERATE OCNL POOR
W OF 50W - N OF 45S: NW 5 WITH GUSTS BACK E 3 VIS MODERATE TO GOOD
REST OF THE AREA: N 5/6 WITH GUSTS BACK SW 5/3 VEER NE 3/4 PROB OF ISOL RAIN
TOWARDS THE END OF THE PERIOD VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR W 6/5 WITH GUSTS PROB
OF ISOL RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
E OF 30W - N OF 55S: W 4/5 VEER VRB 3 VEER NE 4 PROB OF RAIN SNOW FALL VIS
MODERATE OCNL POOR
REST OF THE AREA: SW 6/3 BACK E 3 VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W - N OF 55S: W 5/3 WITH GUSTS
VEER N 3 BACK SW 5/8 WITH GUSTS BY 4/0900 PROB OF RAIN AND SNOW MIXTURE VIS
MODERATE TO POOR
E OF 50W - S OF 55S: E 3/4 BACK NE 3/5 PROB OF RAIN AND SNOW MIXTURE VIS
MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 4/5 WITH GUSTS VEER NE 5 BACK SECTOR W 4/5 WITH
GUSTS PROB OF RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): N 4 BACK NW 5/6 WITH GUSTS PROB OF RAIN AND
SNOW MIXTURE VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 03, DECEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1409/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR E
1410/2025 STRONG BARIC GRADIENT MARGARITA BAY MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM NE
PART 2 GENERAL SYNOPSIS AT 09:00UTC
RIDGE 70S 40W 65S 45W 60S 45W MOV E WKN
LOW 952HPA 62S 85W MOV E WKN
LOW 986HPA 62S 60W MOV E WKN EXTENDS CFNT AT
021400 UTC 1.SEA ICE LIMIT 5830S 02000W 5611S 02546W 5736S 02958W 5833S 03142W 5757S 03800W 5736S 04312W 5753S 04820W 5927S 05314W 6038S 05517W 6141S 05718W 6411S 06356W 6637S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5224S 04017W 32X24NM A74A 5502S 02626W 27X17NM A77 5252S 04216W 27X4NM A76C 5908S 03848W 16X7NM B15AB 5801S 04614W 11X4NM A23G 5329S 03842W 11X3NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5448S 04006W 9X2NM ICEBERG2 5124S 03440W 3X1NM ICEBERG3 5254S 03907W 7X3NM ICEBERG4 4718S 02107W 4X2NM ICEBERG5 5053S 03708W 6X2NM ICEBERG6 5204S 03847W 3X3NM ICEBERG7 5154S 04120W 2X2NM ICEBERG8 5318S 03954W 3X3NM ICEBERG9 5146S 03549W 2X1NM ICEBERG10 5117S 03827W 4X2NM ICEBERG11 5305S 03718W 3X1NM ICEBERG12 5247S 04011W 4X1NM ICEBERG13 5207S 04152W 2X1NM ICEBERG14 4942S 03839W 2X1NM ICEBERG15 4939S 03828W 2X1NM ICEBERG16 5206S 04154W 3X1NM ICEBERG17 5402S 03959W 2X1NM ICEBERG18 5153S 04135W 2X1NM ICEBERG19 5205S 04149W 2X2NM ICEBERG20 5046S 02210W 3X1NM ICEBERG21 5214S 04058W 2X1NM ICEBERG22 5549S 04131W 4X1NM ICEBERG23 5044S 03747W 9X6NM ICEBERG24 5118S 03633W 8X2NM ICEBERG25 5119S 04039W 7X2NM ICEBERG26 5224S 04034W 4X2NM ICEBERG27 5002S 02922W 2X1NM ICEBERG28 5202S 03949W 4X2NM ICEBERG29 5229S 03949W 4X1NM ICEBERG30 5231S 03949W 2X1NM ICEBERG31 5228S 03958W 2X1NM 4.ICEBERGS AREA A 6000S 02000W 4657S 02000W 4600S 03100W 5900S 03200W B 5900S 03200W 4600S 03100W 4800S 04100W 5900S 04100W C 5900S 04100W 4800S 04100W 6000S 06716W 6600S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-12-4
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR N 3/5 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR N 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR N 3/4 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR N 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : NE 3/4 PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
MARGARITA BAY : SECTOR E 8 VIS GOOD
EREBUS Y TERROR GULF : NE 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR E 8 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 8 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): NE 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 3/4 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR=