1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-11-28, 00:00 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 ON MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST IN FIN DEL MUNDO COASTS DRAKE AREA (55S- 60S AND 60W- 67W) FROM
28/0600
WARNING 480: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 40S-55S AND 20W-40W UNTIL 28/0600
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 1005HPA RINCON BAHIA BLANCA COASTS MOV NE NC EXP 37S 50W BY 28/1500
HIGH 1020HPA GOLFO DE SAN JORGE COASTS MOV NE NC EXP 44S 58W BY 28/2100
LOW 976HPA 51S 22W MOV E NC EXTENDS CFNT AT 47S 25W 47S 33W 46S 39W MOV E
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 00:00 UTC VALID UNTIL 00:00 UTC 2025-11-29
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3 BACK SE 4/5 WITH GUSTS BY 28/1200 VIS GOOD
OCNL MODERATE
OUTER RIO DE LA PLATA: NE 4 BACK SECTOR S 5/6 WITH GUSTS BY 28/0600 PROB OF ISOL
STORMS IMPR STARTING EARLY MORNING VIS MODERATE
URUGUAY SOUTH EAST COASTS: NE 5 WITH GUSTS BACK SECTOR S 5/6 WITH GUSTS BY
28/1500 PROB OF STORMS STARTING EARLY MORNING IMPR TOWARDS NOON VIS MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): NE 5 BACK SECTOR S 5/6 WITH GUSTS PROB OF
STORMS IMPR TOWARDS EARLY MORNING VIS POOR TO MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 6/5 WITH GUSTS BACK SECTOR E
4 BY 28/1800 PROB OF SH ISOL STORMS IMPR STARTING EARLY MORNING VIS MODERATE
OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): SE 6/5 WITH GUSTS BACK NE 4 BY 28/2100
VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 5 WITH GUSTS VEER SECTOR N 5/6
WITH GUSTS BY 28/1500 VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 5/6 WITH GUSTS VIS GOOD OCNL
MODERATE
FIN DEL MUNDO COASTS(54S - 55S): NW 5 WITH GUSTS BACK SECTOR W 7/8 WITH GUSTS
BY 28/0900 PROB OF ISOL RAIN VIS MODERATE TO POOR
ISLAS MALVINAS COASTS: SE 5 WITH GUSTS VEER W 6 WITH GUSTS BY 28/0900 PROB OF
ISOL RAIN VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: VRB 3 VIS GOOD
W OF 35 - E OF 50W: SECTOR N 5/4 PROB OF SH RAIN STARTING EVENING VIS MODERATE
TO POOR
REST OF THE AREA: SECTOR N 6/5 WITH GUSTS BACK SECTOR S 6/7 GUST WITH 8
INTENSITY BY 28/1500 PROB OF SH ISOL STORMS VIS POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR W 8 WITH GUSTS VEER
NW 6/7 GUST WITH 8 INTENSITY BY 28/0900 PROB OF RAIN VIS POOR
REST OF THE AREA: SECTOR W 6 WITH GUSTS BACK SW 6/5 WITH GUSTS BY 28/1500 PROB
OF RAIN VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 6/5 WITH GUSTS PROB
OF RAIN SH VIS MODERATE
REST OF THE AREA: SECTOR S 6 WITH GUSTS VEER NW 5 BY 28/1800 PROB OF RAIN IMPR
TOWARDS NOON VIS POOR TO MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR S 6/5 WITH GUSTS VEER
SECTOR W 4 BY 28/0900 PROB OF ISOL SNOW FALL VIS POOR TO MODERATE
REST OF THE AREA: SECTOR S 4/5 PROB OF ISOL SNOW FALL VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR S 5 WITH GUSTS PROB OF
ISOL SNOW FALL VIS MODERATE
REST OF THE AREA: SECTOR S 5/4 VEER SECTOR W 6/7 GUST WITH 8 INTENSITY BY
28/1200 PROB OF RAIN AND SNOW MIXTURE VIS MODERATE TO POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 7/8 WITH GUSTS PROB OF RAIN AND
SNOW MIXTURE VIS VERY POOR TO POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 28, NOVEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1379/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W IN 60S-65S 70W-90W
1380/2025 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E IN 65S-70S 70W-90W UNTIL 28/0600
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 984HPA 67S 90W MOV E WKN EXTENDS CFNT AT 67S 90W 63S 80W 60S 70W
LOW 988HPA 70S 55W MOV E WKN
RIDGE 60S 60W 62S 60W 64S 60W 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 00:00 UTC VALID UNTIL 00:00 UTC 2025-11-29
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR N 3/4 BACK SECTOR W BY 28/0900 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 3/4 VEER SECTOR E BY 28/1500 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 N 3/4 VEER SECTOR E BY 28/0600 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 3/4 VEER SECTOR E 5 BY 28/1500 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : NE 3/4 VIS GOOD
MARGARITA BAY : NE 3/4 VIS GOOD
EREBUS Y TERROR GULF : SECTOR S 3/4 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 W 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 DECR 4 BY 28/0600 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): SW 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 PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR=