1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-11-28, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 481: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST IN DRAKE AREA (55S- 60S AND 60W- 67W) UNTIL 29/0000
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1026HPA 44S 61W MOV NE WKN EXP 42S 56W BY 29/1200
LOW 1007HPA 35S 54W MOV NE WKN EXTENDS CFNT AT 37S 54W 35S 55W 33S 58W MOV NE
LOW 999HPA 46S 36W MOV SE DPN EXTENDS CFNT AT 46S 36W 44S 38W 42S 42W MOV SE
LOW 994HPA 51S 36W MOV E NC EXTENDS CFNT AT 51S 36W 49S 43W 48S 49W MOV E
CFNT AT 59S 62W 5S 61W 52S 65W MOV NE
261400 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 5227S 04030W 32X24NM
A74A 5430S 02626W 27X17NM A77 5330S 04012W 27X4NM A76C 5930S 03836W 16X7NM B15AB
5805S 04622W 11X4NM A23G 5317S 03824W 11X3NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 5140S 03442W 3X1NM ICEBERG2 5535S 04102W 9X2NM ICEBERG3 5124S 03440W
3X1NM ICEBERG4 5249S 03900W 7X3NM ICEBERG5 4859S 02233W 4X2NM ICEBERG6 5208S
03755W 2X1NM ICEBERG7 5049S 03622W 6X2NM ICEBERG8 5208S 03843W 3X3NM ICEBERG9
5230S 04142W 2X2NM ICEBERG10 5327S 03859W 3X3NM ICEBERG11 5327S 03859W 2X1NM
ICEBERG12 5122S 03913W 4X2NM ICEBERG13 5020S 02345W 2X1NM ICEBERG14 5304S 03734W
3X1NM ICEBERG15 5255S 04013W 4X1NM ICEBERG16 5242S 04152W 2X1NM ICEBERG17 4948S
03825W 2X1NM ICEBERG18 5002S 03834W 2X1NM ICEBERG19 5239S 04148W 3X1NM ICEBERG20
5349S 04059W 2X1NM ICEBERG21 5236S 04146W 2X1NM ICEBERG22 5244S 04155W 2X2NM
ICEBERG23 5053S 02144W 3X1NM ICEBERG24 4939S 02746W 3X1NM ICEBERG25 5205S 04118W
2X1NM ICEBERG26 5227S 04139W 2X1NM ICEBERG27 5549S 04131W 4X1NM ICEBERG28 5044S
03847W 9X6NM ICEBERG29 5129S 03645W 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 12:00 UTC VALID UNTIL 12:00 UTC 2025-11-29
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 3/4 BACK 6/3 WITH GUSTS ISOL RAIN STORMS TOWARDS
THE END OF THE PERIOD VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: SECTOR S 3/4 BACK 6/3 WITH GUSTS ISOL RAIN STORMS TOWARDS
THE END OF THE PERIOD VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SW 5/6 WITH GUSTS BACK SE 6/3 WITH GUSTS PROB OF ISOL
RAIN STORMS VIS MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 5/6 WITH GUSTS BACK SECTOR E 5/3
PROB OF ISOL RAIN DURING THE MORNING VIS MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SE 5 BACK NE 4/3 PROB OF ISOL SH RAIN
TOWARDS THE END OF THE PERIOD VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SE 3/4 BACK SECTOR N 4/5 WITH GUSTS
PROB OF SH STARTING NIGTH VIS MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): NW 4/5 WITH GUSTS BACK SECTOR W 4 PROB
OF SH STARTING EARLY MORNING VIS MODERATE OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 6 WITH GUSTS BACK SECTOR S 5/4
WITH GUSTS PROB OF ISOL RAIN VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 6 GUST WITH 8 INTENSITY PROB OF ISOL
RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR W 8 WITH GUSTS BACK SW 6/4 WITH GUSTS PROB OF ISOL
RAIN AND SNOW MIXTURE VIS POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: NW 4 BACK SECTOR S 4/5 PROB OF ISOL
SH STORMS STARTING EVENING VIS MODERATE OCNL POOR
E OF 45W: NW 4 BACK W 3 PROB OF ISOL SH RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: NW 4 BACK SECTOR S 6/4 WITH GUSTS PROB OF ISOL SH STORMS VIS
MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: NW 6 GUST WITH 8
INTENSITY BACK SW 5/4 WITH GUSTS PROB OF RAIN VIS POOR TO MODERATE
W OF 30 - N OF 45S: NW 6 WITH GUSTS BACK SECTOR S 5/3 BY 28/2100 PROB OF RAIN
VIS POOR TO MODERATE
REST OF THE AREA: W 4/5 TEMPO BACK SW 4/6 PROB OF ISOL RAIN AND SNOW MIXTURE
VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: S 6/3 WITH GUSTS PROB OF
ISOL RAIN STORMS TOWARDS THE END OF THE PERIOD IMPR VIS MODERATE OCNL POOR TO
GOOD
REST OF THE AREA: S 6/3 WITH GUSTS VEER W 5/6 WITH GUSTS PROB OF ISOL RAIN
STARTING NIGTH VIS GOOD TO MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SW 4/3 VEER W 3/5 PROB OF ISOL RAIN AND
SNOW MIXTURE VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SW 5/3 WITH GUSTS VEER NW 5/6
WITH GUSTS BACK W 6 WITH GUSTS PROB OF SH OF RAIN SH OF SNOW VIS MODERATE TO
POOR
REST OF THE AREA: SW 4/3 VEER SECTOR W 6 WITH GUSTS BACK SE 6 WITH GUSTS PROB
OF ISOL RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): W 8 WITH GUSTS BACK SECTOR S 6/4 WITH GUSTS
PROB OF RAIN AND SNOW MIXTURE VIS POOR TO MODERATE
-----------------------------------------------------------------
NNNN=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 28, NOVEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1381/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR W IN 60S-65S 70W-90W UNTIL 28/1200
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 989HPA 65S 80W MOV E WKN
LOW 990HPA 61S 65W MOV E WKN
261400 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 5227S 04030W 32X24NM A74A 5430S 02626W 27X17NM A77 5330S 04012W 27X4NM A76C 5930S 03836W 16X7NM B15AB 5805S 04622W 11X4NM A23G 5317S 03824W 11X3NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5140S 03442W 3X1NM ICEBERG2 5535S 04102W 9X2NM ICEBERG3 5124S 03440W 3X1NM ICEBERG4 5249S 03900W 7X3NM ICEBERG5 4859S 02233W 4X2NM ICEBERG6 5208S 03755W 2X1NM ICEBERG7 5049S 03622W 6X2NM ICEBERG8 5208S 03843W 3X3NM ICEBERG9 5230S 04142W 2X2NM ICEBERG10 5327S 03859W 3X3NM ICEBERG11 5327S 03859W 2X1NM ICEBERG12 5122S 03913W 4X2NM ICEBERG13 5020S 02345W 2X1NM ICEBERG14 5304S 03734W 3X1NM ICEBERG15 5255S 04013W 4X1NM ICEBERG16 5242S 04152W 2X1NM ICEBERG17 4948S 03825W 2X1NM ICEBERG18 5002S 03834W 2X1NM ICEBERG19 5239S 04148W 3X1NM ICEBERG20 5349S 04059W 2X1NM ICEBERG21 5236S 04146W 2X1NM ICEBERG22 5244S 04155W 2X2NM ICEBERG23 5053S 02144W 3X1NM ICEBERG24 4939S 02746W 3X1NM ICEBERG25 5205S 04118W 2X1NM ICEBERG26 5227S 04139W 2X1NM ICEBERG27 5549S 04131W 4X1NM ICEBERG28 5044S 03847W 9X6NM ICEBERG29 5129S 03645W 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 12:00 UTC VALID UNTIL 12:00 UTC 2025-11-29
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 3/4 BACK SECTOR E BY 29/0000 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 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: SECTOR E 3/4 PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR E 4/5 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : SECTOR W 3/4 TEMPO VEER NE BY 29/0000 VIS GOOD
MARGARITA BAY : SECTOR W 3/4 VEER NE BY 29/0000 VIS GOOD
EREBUS Y TERROR GULF : SW 3/5 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES TOWARDS NIGTH WORSENING VIS MODERATE TO POOR OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR W 8 DECR 4 BY 28/2100 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL WORSENING TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 3/4 VEER SECTOR S BY 28/1800 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): SECTOR S 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR=