1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 02, DECEMBER 2025.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 482: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 FROM SECTOR
W WITH GUST IN CENTRAL EAST AREA (40S- 50S AND 20W- 40W) UNTIL 03/0900
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1020HPA 39S 40W MOV E INTSF EXP 39S 27W BY 03/1200
LOW 989HPA 52S 34W MOV E DPN EXTENDS OFNT52S 30W 54S 39W 51S 37W
LOW 981HPA 60S 64W MOV NE NC EXP 51S 38W BY 03/1200 EXTENDS CFNT AT 60S 64W 57S
61W 52S 63W MOV NE
011400 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 04021W 32X24NM
A74A 5457S 02624W 27X17NM A77 5257S 04156W 27X4NM A76C 5910S 03846W 16X7NM B15AB
5801S 04614W 11X4NM A23G 5328S 03837W 11X3NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 5140S 03442W 3X1NM ICEBERG2 5440S 04023W 9X2NM ICEBERG3 5124S 03440W
3X1NM ICEBERG4 5253S 03900W 7X3NM ICEBERG5 4731S 02119W 4X2NM ICEBERG6 5053S
03708W 6X2NM ICEBERG7 5204S 03847W 3X3NM ICEBERG8 5203S 04126W 2X2NM ICEBERG9
5325S 03910W 3X3NM ICEBERG10 5123S 03632W 2X1NM ICEBERG11 5114S 03855W 4X2NM
ICEBERG12 5020S 02345W 2X1NM ICEBERG13 5305S 03726W 3X1NM ICEBERG14 5248S 04012W
4X1NM ICEBERG15 5214S 04155W 2X1NM ICEBERG16 4942S 03839W 2X1NM ICEBERG17 4939S
03828W 2X1NM ICEBERG18 5212S 04156W 3X1NM ICEBERG19 5408S 03957W 2X1NM ICEBERG20
5202S 04143W 2X1NM ICEBERG21 5216S 04152W 2X2NM ICEBERG22 5046S 02210W 3X1NM
ICEBERG23 4933S 02738W 3X1NM ICEBERG24 5212S 04053W 2X1NM ICEBERG25 5549S 04131W
4X1NM ICEBERG26 5044S 03747W 9X6NM ICEBERG27 5125S 03627W 8X2NM ICEBERG28 5218S
04035W 7X2NM ICEBERG29 5219S 04031W 4X2NM 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 2025-12-3
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 3 BACK E 3/4 AFTERWARDS N 3 MIST DISSIPATING VIS GOOD
OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR S 3 BACK E 3 BACK SECTOR N 3 LOW PROB OF MIST VIS
GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SW 3 BACK E 3 BACK SECTOR N 3 WORSENING WITH PROB OF
MIST FOG PATCHES VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SE 3 BACK SECTOR N 3/5 PROB OF FOG AND
MIST IN PATCHES DISSIPATING VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 3/4 PROB OF FOG AND MIST IN
PATCHES DISSIPATING VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 4/3 BACK SECTOR W 4/3 VIS
GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 4/6 WITH GUSTS TEMPO VEER NE
5/4 VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 6 BACK SECTOR S 4 VEER SECTOR N
3/6 WITH GUSTS PROB OF ISOL SH RAIN DURING THE EARLY MORNING VIS GOOD TO
MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4 VEER SECTOR N 5/6 WITH GUSTS PROB
OF SH RAIN VIS MODERATE
ISLAS MALVINAS COASTS: NW 3 BACK SECTOR S 4 VEER SECTOR N 3/5 WITH GUSTS PROB OF
RAIN VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SW 3 VEER W 3/4 VEER NW 3 VIS
GOOD
NORTH AREA (35S- 40S AND 20W- 55W) REST OF THE AREA: SECTOR E 4/5 BACK SECTOR N
3/4 PROB OF ISOL SH RAIN VIS GOOD OCNL MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR W 5/6 INCR 8 BY 02/1500 DECR
SECTOR W 6 GUST WITH 8 INTENSITY BY 3/0900 PROB OF RAIN VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): NW 4/6 WITH GUSTS FOG AND MIST IN
PATCHES DISSIPATING PROB OFISOL RAIN VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR W 6 WITH GUSTS PROB OF
ISOL RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55 - W OF 30W: SW 5/6 WITH GUSTS
VEER W 5/4 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) REST OF THE AREA: SECTOR S 5/6 DECR 3
PROB OF ISOL RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55 - E OF 50W: SECTOR S 4 VEER NE
5/6 WITH GUSTS BACK SECTOR W 6/4 WITH GUSTS PROB OF RAIN NEXT IMPR TOWARDS THE
END OF THE PERIOD VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55 - E OF 50W: S 5 BACK SECTOR N
3/4 PROB OF ISOL RAIN AND SNOW MIXTURE STARTING NIGTH VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55 - W OF 50W: SECTOR N 4 WITH
GUSTS BACK SW 5/3 WITH GUSTS VEER SECTOR W 3/5 WITH GUSTS PROB OF RAIN PROB OF
FOG AND MIST IN PATCHES DISSIPATING VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) REST OF THE AREA: NE 6 WITH GUSTS BACK
SW 4/3 VEER SECTOR N 3/4 PROB OF FOG AND MIST IN PATCHES DISSIPATING PROB OF
RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SW 5/4 VEER NW 4/6 WITH GUSTS DECR NW 4 PROB
OF SH RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
-----------------------------------------------------------------
NNNN=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 02, DECEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1392/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR N IN 60S-65S 70W-90W
1393/2025 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E IN 65S-70S 70W-90W
1394/2025 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM NE IN 62S-66S 60W-70W UNTIL 02/1500
1395/2025 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS GERLACHE STRAIT MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM NE IN 62S-66S 60W-70W
1396/2025 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS WILL PROVOKE WINDS FORCE 8 FROM NE BY 2/1200 IN 60S-64S 50W-60W
1397/2025 STRONG BARIC GRADIENT MARGARITA BAY WILL PROVOKE WINDS FORCE 8 FROM NE BY 2/0900 IN 66S-70S 50W-60W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
RIDGE 70S 40W 65S 45W 60S 40W MOV E WKN
LOW 947HPA 60S 90W MOV SE DPN EXTENDS CFNT AT 60S 90W 60S 70W
011400 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 04021W 32X24NM A74A 5457S 02624W 27X17NM A77 5257S 04156W 27X4NM A76C 5910S 03846W 16X7NM B15AB 5801S 04614W 11X4NM A23G 5328S 03837W 11X3NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5140S 03442W 3X1NM ICEBERG2 5440S 04023W 9X2NM ICEBERG3 5124S 03440W 3X1NM ICEBERG4 5253S 03900W 7X3NM ICEBERG5 4731S 02119W 4X2NM ICEBERG6 5053S 03708W 6X2NM ICEBERG7 5204S 03847W 3X3NM ICEBERG8 5203S 04126W 2X2NM ICEBERG9 5325S 03910W 3X3NM ICEBERG10 5123S 03632W 2X1NM ICEBERG11 5114S 03855W 4X2NM ICEBERG12 5020S 02345W 2X1NM ICEBERG13 5305S 03726W 3X1NM ICEBERG14 5248S 04012W 4X1NM ICEBERG15 5214S 04155W 2X1NM ICEBERG16 4942S 03839W 2X1NM ICEBERG17 4939S 03828W 2X1NM ICEBERG18 5212S 04156W 3X1NM ICEBERG19 5408S 03957W 2X1NM ICEBERG20 5202S 04143W 2X1NM ICEBERG21 5216S 04152W 2X2NM ICEBERG22 5046S 02210W 3X1NM ICEBERG23 4933S 02738W 3X1NM ICEBERG24 5212S 04053W 2X1NM ICEBERG25 5549S 04131W 4X1NM ICEBERG26 5044S 03747W 9X6NM ICEBERG27 5125S 03627W 8X2NM ICEBERG28 5218S 04035W 7X2NM ICEBERG29 5219S 04031W 4X2NM 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 00:00 UTC VALID UNTIL 00:00 UTC 2025-12-3
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NE 8 BACK 5 BY 2/1500 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES IMPR STARTING EVENING VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NE 3/4 INCR 8 BY 2/1200 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: NE 8 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: NE 3/4 INCR 8 BY 2/1200 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : NE 8 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
MARGARITA BAY : NE 3/4 INCR 8 BY 2/0900 VIS GOOD
EREBUS Y TERROR GULF : NE 3/5 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES WORSENING TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR N 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 FOG PATCHES PROB OFISOL SNOW FALL 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): SE 3/4 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR=