1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-12, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 420: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST IN DRAKE AREA (55S- 60S AND 60W- 67W)
WARNING 419: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 FROM S WITH
GUST BETWEEN 35S-45S AND 20W-40W FROM 12/1500 UNTIL 13/0300
WARNING 418: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 WITH GUST
BETWEEN 35S-45S AND 20W-30W UNTIL 13/0000
WARNING 417: LOW 975HPA AT 59S 20W MOV E NOT CHANGE PROVOKES WINDS FORCE 8 FROM
SECTOR W WITH GUST BETWEEN 50S-60S AND 20W-30W UNTIL 13/0000
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 975HPA 59S 20W NOT MOV NC
LOW 1005HPA 35S 30W MOV SE DPN
HIGH 1038HPA 43S 65W MOV NE EXP 37S 60W BY 13/1200
111400 UTC 1.SEA ICE LIMIT 5545S 02000W 5412S 02618W 5547S 03218W 5632S 03758W
5720S 04317W 5923S 04813W 6002S 05247W 6126S 05654W 6005S 06032W 6010S 06337W
6026S 06559W 6117S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5714S 04700W 28X25NM
D33B 5842S 04939W 21X12NM A76C 5407S 02620W 17X6NM 3.ICEBERGS SMALLER THAN 10NM
D32 5757S 03911W 9X6NM D33C 6152S 05420W 9X5NM ICEBERG1 5852S 04703W 5X3NM
ICEBERG2 6014S 05224W 5X3NM ICEBERG3 5845S 05108W 6X4NM ICEBERG4 6012S 05130W
2X1NM ICEBERG5 5844S 05130W 2X1NM 4.ICEBERGS AREA A5616S 02000W 4901S 02000W
5200S 04009W 5820S 04000W B5820S 04000W 5317S 03933W 5903S 06716W 6145S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-13
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 5/4 PROB OF ISOL DRIZZLE TOWARDS THE END OF THE PERIOD
IMPR VIS POOR TO GOOD
OUTER RIO DE LA PLATA: SE 6/4 WITH GUSTS PROB OF ISOL DRIZZLE TOWARDS THE END OF
THE PERIOD IMPR VIS POOR TO GOOD
URUGUAY SOUTH EAST COASTS: SE 6/5 WITH GUSTS PROB OF ISOL RAIN VIS POOR TO
MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): S 5/4 WITH GUSTS BACK SECTOR W 3 BY
13/0300 VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): S 4/3 BACK NW 4/5 WITH GUSTS BY
13/0600 VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): S 3 VEER NW 4/6 WITH GUSTS BY 12/1800
VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 5/4 WITH GUSTS VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S): W 5/6 WITH GUSTS VIS GOOD
FIN DEL MUNDO COASTS(54S - 55S): W 6/7 GUST WITH 8 INTENSITY LOW PROB OF ISOL
RAIN VIS GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: W 6/7 WITH GUSTS LOW PROB OF ISOL RAIN VIS GOOD OCNL
MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 9 WITH GUSTS VEER S 8 WITH GUSTS
BY 12/1800 DECR 6 WITH GUSTS BY 13/0300 HVY STORMS TOWARDS THE END OF THE PERIOD
IMPR VIS VERY POOR TO MODERATE
REST OF THE AREA: SECTOR S 6/5 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: S 6 WITH GUSTS VEER W 6/7
WITH GUSTS BY 13/0600 PROB OF ISOL RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 6/7 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE OCNL
POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: SECTOR S 5 WITH GUSTS VEER
SECTOR W 5/6 WITH GUSTS BY 13/0600 PROB OF SH TOWARDS THE END OF THE PERIOD VIS
GOOD TO MODERATE
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS INCR 7 GUST WITH 8 INTENSITY BY
13/0300 PROB OF ISOL SH VIS GOOD TO MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: W 8 WITH GUSTS DECR 7/6 WITH
GUSTS BY 13/0000 PROB OF SH VIS POOR TO MODERATE
REST OF THE AREA: W 7/6 WITH GUSTS PROB OF SH VIS GOOD OCNL MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SW 6/7 WITH GUSTS PROB OF RAIN AND SNOW
MIXTURE VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): W 8/7 WITH GUSTS PROB OF RAIN AND SNOW
MIXTURE VIS POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 12, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 994HPA 60S 43W MOV E WKN
LOW 998HPA 67S 40W MOV E WKN
HIGH 1004HPA 69S 50W MOV NE INTSF
LOW 1003HPA 63S 68W MOV E DPN
111400 UTC 1.SEA ICE LIMIT 5545S 02000W 5412S 02618W 5547S 03218W 5632S 03758W 5720S 04317W 5923S 04813W 6002S 05247W 6126S 05654W 6005S 06032W 6010S 06337W 6026S 06559W 6117S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5714S 04700W 28X25NM D33B 5842S 04939W 21X12NM A76C 5407S 02620W 17X6NM 3.ICEBERGS SMALLER THAN 10NM D32 5757S 03911W 9X6NM D33C 6152S 05420W 9X5NM ICEBERG1 5852S 04703W 5X3NM ICEBERG2 6014S 05224W 5X3NM ICEBERG3 5845S 05108W 6X4NM ICEBERG4 6012S 05130W 2X1NM ICEBERG5 5844S 05130W 2X1NM 4.ICEBERGS AREA A5616S 02000W 4901S 02000W 5200S 04009W 5820S 04000W B5820S 04000W 5317S 03933W 5903S 06716W 6145S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-13
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 3/4 BACK SECTOR S 5 WITH GUSTS BY 13/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR S 3/4 VEER NE 4 BY 13/0300 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS W OF 60W: SW 3/4 BACK SECTOR S 5 WITH GUSTS BY 13/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 3/4 VEER NE 4 BY 13/0300 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL POOR
GERLACHE STRAIT : SE 3/4 BACK SECTOR E 4 BY 12/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NIGTH VIS POOR TO MODERATE OCNL GOOD
MARGARITA BAY : SECTOR S 3/4 VEER NE 3 BY 13/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE NIGTH VIS POOR TO MODERATE OCNL GOOD
EREBUS Y TERROR GULF : NW 3/4 BACK SECTOR S 5/6 BY 13/0300 PROB OF MIST VIS MODERATE TO GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SE 3/4 VEER SECTOR S 5 BY 13/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 3/4 INCR SW 5 BY 13/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 3/4 VEER SECTOR W 4/5 BY 13/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 64S: SECTOR S 3/4 VEER SW 4/3 BY 13/0000 PROB OF FOG AND MIST IN PATCHES ISOL SNOW FALL IMPR DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR S 3/4 VEER SW 3/4 BY 13/0000 PROB OF MIST VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 3/4 VEER SE 4 BY 12/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD=