1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-16, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 425: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR N IN
PENINSULA DE VALDES COASTS GOLFO DE SAN JORGE COASTS SOUTH PATAGONIA COASTS
NORTHERN OF 50 BETWEEN 40S-50S 55W-60W FROM 16/1200
WARNING 424: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 WITH GUST BETWEEN
35S-45S AND 20W-40W
WARNING 423: STRONG BARIC GRADIENT MOV NE PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 55S-60S AND 20W-60W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
151400 UTC 1.SEA ICE LIMIT 5527S 02000W 5408S 02618W 5439S 03218W 5557S 03757W
5658S 04316W 5914S 04813W 5921S 05247W 6157S 05654W 6223S 06033W 5937S 06337W
6115S 06559W 6053S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5733S 04608W 28X25NM
D33B 5926S 04753W 21X12NM A76C 5424S 02626W 17X6NM 3.ICEBERGS SMALLER THAN 10NM
D32 5736S 03857W 9X6NM D33C 6157S 05414W 9X5NM ICEBERG1 5801S 04806W 5X3NM
ICEBERG2 5956S 05143/W 5X3NM ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5829S 05023W
3X1NM 4.ICEBERGS AREA A5516S 02000W 5001S 02000W 5000S 03909W 5820S 04000W
B5820S 04000W 5000S 03933W 6103S 06716W 6145S 06716W
HIGH 1026HPA 41S 62W MOV NE NC
CFNT AT 59S 30W 54S 39W 51S 47W MOV NE
LOW 993HPA 47S 29W MOV SE NC EXP 47S 25W BY 16/1200 EXTENDS CFNT AT 47S 29W 40S
39W 36S 50W MOV NE
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-17
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 4 BACK SECTOR N 4/3 BY 16/1200 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR S 4/5 BACK SECTOR N 4 BY 16/1500 VIS GOOD
URUGUAY SOUTH EAST COASTS: SECTOR S 4/5 BACK SECTOR N 4 BY 16/1800 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 5/4 BACK SECTOR N 3/4 BY 16/1200
VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/5 INCR 6 WITH GUSTS BY
15/2100 VIS GOOD MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5/6 WITH GUSTS INCR 8 WITH
GUSTS BY 16/1200 VIS GOOD MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5/6 WITH GUSTS INCR 8 WITH
GUSTS BY 16/1200 VIS GOOD MODERATE
SOUTH PATAGONIA COASTS(48S - 54S) N OF 55S: SECTOR N 5/6 INCR 8 BY 16/1200
BACK SECTOR W 5 BY 16/2100 VIS GOOD MODERATE
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SECTOR N 5/6 WITH GUSTS
BACK SECTOR W 5 BY 16/1500 PROB OF RAIN STARTING EVENING VIS GOOD TO MODERATE
OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 6/5 PROB OF RAIN STARTING NIGTH VIS
GOOD TO MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR W 6 WITH GUSTS VEER SECTOR N 7 WITH GUSTS BY
16/1500 PROB OF RAIN STARTING EVENING VIS MODERATE POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR N 8 WITH GUSTS PROB OF RAIN
VIS POOR VERY POOR
W OF 40W: SECTOR S 6/5 PROB OF RAIN VIS POOR MODERATE
REST OF THE AREA: SECTOR N 8 WITH GUSTS BACK SECTOR S 5 BY 16/0900 PROB OF RAIN
VIS POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR N 8 WITH
GUSTS BACK SW 7/6 BY 16/1800 PROB OF RAIN VIS VERY POOR POOR
W OF 30 - N OF 45S: SECTOR N 8 BACK SECTOR S 7/6 WITH GUSTS BY 16/0300 PROB OF
RAIN VIS POOR
E OF 30 - S OF 45S: SECTOR N 7/6 WITH GUSTS BACK SECTOR S 5 BY 16/1500 PROB OF
RAIN AND SNOW MIXTURE VIS POOR
REST OF THE AREA: SECTOR S 7/6 LOW PROB OF RAIN VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 55W: SW 6 VEER SECTOR W BY
16/1800 PROB OF ISOL RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 5 VEER SECTOR N 8 WITH GUSTS BY 16/1500 VIS MODERATE
OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) S OF 55S: SECTOR W 8 WITH GUSTS PROB OF
RAIN AND SNOW MIXTURE VIS VERY POOR POOR
REST OF THE AREA: SECTOR W 7/6 WITH GUSTS LOW PROB OF RAIN AND SNOW MIXTURE VIS
MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55S: SECTOR W 8 WITH GUSTS DECR 7
BY 16/1800 PROB OF RAIN AND SNOW MIXTURE VIS VERY POOR POOR
REST OF THE AREA: SECTOR W 7 WITH GUSTS PROB OF RAIN VIS MODERATE POOR
DRAKE AREA (55S- 60S AND 60W- 67W): VRB 7 GUST WITH 8 INTENSITY BACK SECTOR S 5
BY 16/1800 LOW 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 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=