1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 29, NOVEMBER 2025.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1017HPA 43S 56W NOT MOV
LOW 996HPA 56S 48W MOV NE DPN EXP 52S 31W BY 30/1200 EXTENDS CFNT AT 56S 48W 50S
50W 47S 62W MOV NE EXP 52S 31W 45S 38W BY 30/1200 ASOCIATED WITH OFNT AT 56S 48W
57S 59W 53S 55W
LOW 1003HPA 35S 45W MOV SE WKN EXTENDS WFNT AT 35S 45W 38S 37W MOV SE EXP 39S
32W 38S 22W BY 30/1200
291400 UTC 1.SEA ICE LIMIT 6924S 02000W 6538S 05335W 6248S 04454W 6225S 03158W
6209S 02048W 6310S 05921W 6421S 06351W 5700S 03143W 5815S 04942W 5842S 05257W
6028S 05527W 6156S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5226S 04026W 32X24NM
A74A 5444S 02626W 27X17NM A77 5307S 04059W 27X4NM A76C 5919S 03839W 16X7NM B15AB
5806S 04608W 11X4NM A23G 5325S 03830W 11X3NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 5140S 03442W 3X1NM ICEBERG2 5455S 04018W 9X2NM ICEBERG3 5124S 03440W
3X1NM ICEBERG4 5254S 03859W 7X3NM ICEBERG5 4859S 02233W 4X2NM ICEBERG6 5053S
03708W 6X2NM ICEBERG7 5206S 03842W 3X3NM ICEBERG8 5217S 04139W 2X2NM ICEBERG9
5325S 03910W 3X3NM ICEBERG10 5131S 03628W 2X1NM ICEBERG11 5114S 03855W 4X2NM
ICEBERG12 5020S 02345W 2X1NM ICEBERG13 5300S 03731W 3X1NM ICEBERG14 5249S 04024W
4X1NM ICEBERG15 5229S 04153W 2X1NM ICEBERG16 4945S 03815W 2X1NM ICEBERG17 4944S
03835W 2X1NM ICEBERG18 5230S 04155W 3X1NM ICEBERG19 5407S 03949W 2X1NM ICEBERG20
5221S 04148W 2X1NM ICEBERG21 5227S 04154W 2X2NM ICEBERG22 5040S 02201W 3X1NM
ICEBERG23 4939S 02746W 3X1NM ICEBERG24 5157S 04057W 2X1NM ICEBERG25 5211S 04135W
2X1NM ICEBERG26 5549S 04131W 4X1NM ICEBERG27 5052S 03839W 9X6NM ICEBERG28 5125S
03627W 8X2NM ICEBERG29 4945S 03838W 3X1NM 4.ICEBERGS AREA A 5938S 02000W 4357S
02000W 4654S 04000W 5847S 04000W B 5847S 04000W 4654S 04000W 5425S 05000W 5843S
05000W C 5452S 05000W 5843S 05000W 6512S 06716W 6838S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-11-30
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 INCR 4/5 BY 30/0000 PROB OF RAIN STORMS
SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: E 3/4 INCR 5 BY 30/1200 PROB OF RAIN STORMS STARTING
EVENING IMPR STARTING NIGTH VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: E 3/4 INCR 5 BY 30/1200 PROB OF RAIN STORMS STARTING
EVENING IMPR STARTING NIGTH VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR E 3/4 PROB OF MIST DRIZZLE RAIN
NEXT IMPR STARTING NIGTH VIS POOR TO MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/5 PROB OF RAIN STORMS
DURING THE MORNING VIS POOR TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 3/4 VEER SECTOR E 5 WITH GUSTS
BY 29/2100 BACK SECTOR N 4 BY 30/0600 PROB OF FOG AND MIST IN PATCHES NXT RAIN
STORMS TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR E 4 BACK SECTOR N BY 30/0000 PROB
OF MIST FOG PATCHES VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): VRB 3/4 VEER SECTOR N BY 30/0300 PROB OF
FOG AND MIST IN PATCHES STARTING NIGTH VIS GOOD TO MODERATE
FIN DEL MUNDO COASTS(54S - 55S): VRB 3/4 VEER SECTOR W 5/4 BY 30/0600 PROB OF
DRIZZLE DURING THE MORNING VIS GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: SW 5/6 WITH GUSTS DECR 4/3 BY 30/0600 PROB OF SH IMPR
STARTING EVENING VIS POOR TO GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: VRB 4/3 VEER SECTOR N 5 WITH GUSTS
BY 30/0600 PROB OF RAIN STORMS SPELLS OF GOOD WEATHER VIS MODERATE
NORTH AREA (35S- 40S AND 20W- 55W) REST OF THE AREA: SECTOR S 6/5 WITH GUSTS
DECR 4 BY 30/0900 PROB OF SH RAIN DURING THE EARLY MORNING VIS MODERATE TO
GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SW 5/4 DECR 3 BY 29/1800
VEER SECTOR N 4/5 WITH GUSTS BY 30/0600 PROB OF RAIN STORMS TOWARDS THE END OF
THE PERIOD VIS GOOD TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) REST OF THE AREA: SECTOR S 4/3 VEER NW
5/6 WITH GUSTS BY 29/1800 PROB OF RAIN STORMS STARTING NIGTH VIS GOOD TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: VRB 3 VEER SECTOR W 5/6 WITH
GUSTS BY 29/2100 BACK S BY 30/0300 VIS MODERATE TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) REST OF THE AREA: SECTOR W 5/6 WITH
GUSTS BACK SW BY 30/0000 PROB OF SH STARTING EVENING VIS MODERATE TO POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR W 5/4 VEER SECTOR N 5
WITH GUSTS BY 30/0600 PROB OF SH RAIN TOWARDS THE END OF THE PERIOD VIS GOOD TO
MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) REST OF THE AREA: SECTOR W 4 VEER VRB
3/4 BY 29/2100 VEER SECTOR S 5/6 WITH GUSTS BY 30/0900 PROB OF SH RAIN NXT SH OF
SNOW VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR W 5/6 WITH GUSTS BACK
SECTOR S BY 30/0000 PROB OF SH IMPR GRADUALLY VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) REST OF THE AREA: SECTOR S 5/6 WITH
GUSTS PROB OF SH OF RAIN SH OF SNOW DURING THE MORNING VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SW 6 VEER SECTOR W 4/5 BY 29/2100 PROB OF SH
RAIN VIS POOR TO MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 29, NOVEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1382/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E WEAKENING EXPECTED AROUND 29/0600 PROVOKES WINDS FORCE 8 AROUND ITSELF IN 66S-70S 80W-90W
1383/2025 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV E WEAKENING EXPECTED AROUND 29/1200 WILL PROVOKE WINDS FORCE 8 FROM SECTOR N IN 66S-70S 70W-90 W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1009HPA 68S 80W MOV E WKN
LOW 1002HPA 63S 75W MOV E WKN
281400 UTC 1.SEA ICE LIMIT 6924S 02000W 6538S 05335W 6248S 04454W 6225S 03158W 6209S 02048W 6310S 05921W 6421S 06351W 5700S 03143W 5815S 04942W 5842S 05257W 6028S 05527W 6156S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5225S 04026W 32X24NM A74A 5437S 02628W 27X17NM A77 5319S 04034W 27X4NM A76C 5930S 03836W 16X7NM B15AB 5805S 04622W 11X4NM A23G 5320S 03825W 11X3NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5140S 03442W 3X1NM ICEBERG2 5544S 04118W 9X2NM ICEBERG3 5124S 03440W 3X1NM ICEBERG4 5253S 03859W 7X3NM ICEBERG5 4859S 02233W 4X2NM ICEBERG6 5049S 03622W 6X2NM ICEBERG7 5207S 03844W 3X3NM ICEBERG8 5223S 04141W 2X2NM ICEBERG9 5325S 03910W 3X3NM ICEBERG10 5135S 03629W 2X1NM ICEBERG11 5120S 03910W 4X2NM ICEBERG12 5020S 02345W 2X1NM ICEBERG13 5301S 03735W 3X1NM ICEBERG14 5254S 04022W 4X1NM ICEBERG15 5242S 04152W 2X1NM ICEBERG16 4945S 03815W 2X1NM ICEBERG17 5002S 03834W 2X1NM ICEBERG18 5239S 04148W 3X1NM ICEBERG19 5407S 03949W 2X1NM ICEBERG20 5236S 04146W 2X1NM ICEBERG21 5244S 04155W 2X2NM ICEBERG22 5040S 02201W 3X1NM ICEBERG23 4939S 02746W 3X1NM ICEBERG24 5158S 04109W 2X1NM ICEBERG25 5219S 04140W 2X1NM ICEBERG26 5549S 04131W 4X1NM ICEBERG27 5052S 03839W 9X6NM ICEBERG28 5125S 03627W 8X2NM 4.ICEBERGS AREA A 5930S 02000W 4500S 02000W 4500S 03500W 5810S 03525W B 5810S 03525W 4700S 03440W 4700S 04600W 5820S 05100W C 5820S 05100W 5710S 05200W 6350S 06716W 6638S 05700W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-11-30
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR E 3/4 VEER SECTOR S BY 28/1200 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES TOWARDS EVENING IMPR VIS VERY POOR OCNL GOOD
MAR DE LA FLOTA COASTS W OF 60W: SECTOR E 3/4 PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 3/4 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
GERLACHE STRAIT : SECTOR W 3/4 PROB OF MIST FOG PATCHES STARTING EVENING WORSENING VIS GOOD TO POOR OCNL VERY POOR
MARGARITA BAY : NE 3/4 VIS GOOD
EREBUS Y TERROR GULF : SW 3/5 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 N 8 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL TOWARDS THE END OF THE PERIOD WORSENING VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NE 3/4 INCR 8 BY 29/1200 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL TOWARDS MORNING WORSENING VIS MODERATE TO POOR OCNL VERY POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): SECTOR S 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): SECTOR S 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR=