1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-15, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 424: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH
GUST BETWEEN 35S-45S 20W-40W FROM 16/0000
WARNING 423: STRONG BARIC GRADIENT MOV NE WILL PROVOKE WINDS FORCE 8 FROM SECTOR
W WITH GUST BETWEEN 55S-60S AND 20W-60W FROM 15/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 976HPA 54S 20W MOV E NC ASOCIATED WITH OFNT AT 54S 20W 53S 26W 51S 26W
LOW 990HPA 46S 39W MOV SE WKN EXTENDS CFNT46S 49W 40S 50W 35S 63W MOV NE
HIGH 1029HPA 44S 67W MOV NE EXP 36S 56W BY 16/1200
141400 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 5724S 04616W 28X25NM
D33B 5923S 04801W 21X12NM A76C 5419S 02620W 17X6NM 3.ICEBERGS SMALLER THAN 10NM
D32 5735S 03901W 9X6NM D33C 6157S 05414W 9X5NM ICEBERG1 5810S 04751W 5X3NM
ICEBERG2 5958S 05149W 5X3NM ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5829S 05023W
3X1NM 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 2026-09-16
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR W 3/4 BACK SECTOR S 4/5 BACK SECTOR E 4/3 VIS
GOOD
OUTER RIO DE LA PLATA: SECTOR W 5 BACK SECTOR S 5 AFTERWARDS SECTOR W 3 PROB OF
DRIZZLE STARTING EARLY MORNING VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR W 5 BACK SECTOR S 4/3 PROB OF DRIZZLE DURING
THE EVENING VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 3/6 WITH GUSTS DECR 4/3 PROB OF
ISOL RAIN DURING THE EVENING VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 6/4 WITH GUSTS BACK SECTOR N
3/5 WITH GUSTS PROB OF ISOL RAIN DURING THE EVENING VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 5/3 WITH GUSTS VEER SECTOR N
4/6 WITH GUSTS VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 4 VEER SECTOR N 4/6 GUST WITH 8
INTENSITY PROB OF DRIZZLE DURING THE EVENING VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 5/4 WITH GUSTS VEER SECTOR N 4/6
WITH GUSTS PROB OF RAIN TOWARDS THE END OF THE PERIOD VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 6/5 WITH GUSTS PROB OF RAIN TOWARDS
THE END OF THE PERIOD VIS MODERATE
ISLAS MALVINAS COASTS: SECTOR S 5/6 WITH GUSTS VEER SECTOR N 5/6 WITH GUSTS PROB
OF ISOL DRIZZLE VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR W 6 WITH GUSTS VEER SECTOR N
6/8 WITH GUSTS VEER SECTOR S 6 PROB OF HVY RAIN STORMS VIS POOR
REST OF THE AREA: SECTOR W 6 WITH GUSTS BACK SECTOR S 6/4 WITH GUSTS PROB OF
HVY SH OF RAIN VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR W 6 GUST WITH 8
INTENSITY VEER SECTOR N 6/8 WITH GUSTS VEER SECTOR S 6 PROB OF HVY RAIN RAIN AND
SNOW MIXTURE VIS POOR
REST OF THE AREA: SECTOR S 6 WITH GUSTS BACK SECTOR S 6 WITH GUSTS PROB OF HVY
RAIN RAIN AND SNOW MIXTURE VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR S 6/5 WITH GUSTS PROB OF ISOL
SH RAIN RAIN AND SNOW MIXTURE VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR S 4 VEER SECTOR W 4/6
WITH GUSTS PROB OF ISOL RAIN SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE OCNL
POOR
REST OF THE AREA: SECTOR W 6/8 WITH GUSTS PROB OF ISOL RAIN SNOW FALL SPELLS OF
GOOD WEATHER VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR W 6 WITH GUSTS PROB OF
ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 6/8 WITH GUSTS PROB OF ISOL RAIN SNOW FALL SPELLS OF
GOOD WEATHER VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/5 GUST WITH 8 INTENSITY PROB OF
ISOL RAIN SNOW FALL VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 15, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1148/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV NE DEEPENING PROVOKES WINDS FORCE 8 WITH GUST BACK SW WITH GUST IN 60S-68S 50W-30W UNTIL 15/1800
1149/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 60S-64S 70W-50W UNTIL 16/0900
1150/2026 STRONG BARIC GRADIENT MARGARITA BAY GERLACHE STRAIT MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 64S-69S 70W-65W UNTIL 16/0000
1151/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV NE DEEPENING PROVOKES WINDS FORCE 9 FROM SECTOR W WITH GUST IN 63S-69S 90W-70W UNTIL 15/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 935HPA 69S 33W MOV E DPN EXTENDS CFNT AT 69S 33W 64S 42W 61S 49W MOV E
141400 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 5724S 04616W 28X25NM D33B 5923S 04801W 21X12NM A76C 5419S 02620W 17X6NM 3.ICEBERGS SMALLER THAN 10NM D32 5735S 03901W 9X6NM D33C 6157S 05414W 9X5NM ICEBERG1 5810S 04751W 5X3NM ICEBERG2 5958S 05149W 5X3NM ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5829S 05023W 3X1NM 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 2026-09-16
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 6/7 GUST WITH 8 INTENSITY INCR SW 9 WITH GUSTS BY 15/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 8 WITH GUSTS INCR SECTOR W 9 WITH GUSTS BY 15/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 6/7 GUST WITH 8 INTENSITY INCR SW 10 WITH GUSTS BY 15/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 8 WITH GUSTS INCR SECTOR W 9 WITH GUSTS BY 15/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
GERLACHE STRAIT : SW 7 GUST WITH 8 INTENSITY INCR SW 8 WITH GUSTS BY 15/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
MARGARITA BAY : SECTOR W 7 WITH GUSTS BACK SW 5/4 WITH GUSTS BY 15/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE
EREBUS Y TERROR GULF : SW 5/7 WITH GUSTS INCR SW 8 WITH GUSTS BY 15/1800 PROB OF MIST BLIZZARD PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS MODERATE TO VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 5/6 WITH GUSTS VEER SECTOR W 7/8 WITH GUSTS BY 15/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 7/8 WITH GUSTS BACK SW 6/5 WITH GUSTS BY 15/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 7/5 WITH GUSTS BACK SECTOR S 5 WITH GUSTS BY 16/0000 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: NW 6/7 WITH GUSTS BACK SECTOR W 8 WITH GUSTS BY 15/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SW 7/8 WITH GUSTS VEER SECTOR W 8 WITH GUSTS BY 16/0000 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 7 BACK SECTOR E 8 WITH GUSTS BY 15/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD=