1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-11-27, 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 WILL PROVOKE WINDS FORCE 8 FROM SECTOR
W WITH GUST IN DRAKE AREA (55S- 60S AND 60W- 67W) FROM 28/0600
WARNING 480: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 45S-55S AND 20W-40W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1020HPA 37S 37W MOV E NC
LOW 987HPA 53S 41W MOV E NC EXTENDS CFNT AT 53S 41W 48S 43W 45S 53W MOV E
ASOCIATED WITH OFNT AT 53S 41W 56S 50W 53S 51W
LOW 1005HPA 42S 51W MOV NE 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 04027W 32X24NM
A74A 5425S 02631W 27X17NM A77 5336S 04004W 27X4NM A76C 5931S 03837W 16X7NM B15AB
5807S 04627W 11X4NM A23G 5315S 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 5101S 03721W 6X2NM ICEBERG8 5216S 03843W 3X3NM ICEBERG9
5230S 04142W 2X2NM ICEBERG10 5329S 03843W 3X3NM ICEBERG11 5140S 03701W 2X1NM
ICEBERG12 5129S 03920W 4X2NM ICEBERG13 5020S 02345W 2X1NM ICEBERG14 5304S 03734W
3X1NM ICEBERG15 5255S 04013W 4X1NM ICEBERG16 5242S 04152W 2X1NM ICEBERG17 4953S
03828W 2X1NM ICEBERG18 5010S 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 5037S
03851W 9X6NM ICEBERG29 5129S 03645W 8X2NM 4.ICEBERGS AREA A 5938S 02000W 4600S
02000W 4600S 03100W 5800S 03100W B 5800S 03100W 4600S 03100W 4700S 03800W 5900S
03800W C 4700S 03800W 5900S 03800W 6400S 05700W 5900S 05700W D 6400S 05700W
6830S 06716W 6400S 06716W 6100S 05700W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-11-28
COASTAL AREAS:
INNER RIO DE LA PLATA: NE 3/4 VEER SECTOR S BY 28/0600 PROB OF HVY RAIN STORMS
DURING THE NIGTH VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: NE 4/5 WITH GUSTS VEER SECTOR S BY 28/0600 PROB OF HVY
RAIN STORMS DURING THE NIGTH VIS MODERATE OCNL POOR
URUGUAY SOUTH EAST COASTS: NE 4/5 WITH GUSTS VEER SECTOR S BY 28/0600 PROB OF
HVY RAIN STORMS DURING THE NIGTH VIS MODERATE OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 5 WITH GUSTS VEER SECTOR S BY
28/0600 PROB OF HVY RAIN STORMS DURING THE NIGTH VIS MODERATE OCNL POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/5 WITH GUSTS VEER SECTOR S
BY 27/1800 PROB OF RAIN STORMS DURING THE EVENING VIS GOOD TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 5/6 WITH GUSTS VIS GOOD OCNL
MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 5 WITH GUSTS TEMPO VEER SECTOR
N BY 28/0000 BACK VRB 3 BY 28/0600 VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 6/5 WITH GUSTS VEER SECTOR W WITH
GUSTS BY 28/0000 VIS GOOD OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 5/6 WITH GUSTS VEER SECTOR W WITH
GUSTS BY 28/0000 UNSTABLE VIS GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: SECTOR S 5/6 WITH GUSTS TOWARDS THE END OF THE PERIOD
WORSENING VIS GOOD OCNL MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) W OF 35W: SECTOR N 4/5 WITH GUSTS TOWARDS THE
END OF THE PERIOD WORSENING VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR S 5/4 WITH GUSTS VEER SECTOR N BY 27/1800 VIS GOOD
OCNL MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR W 6 GUST WITH 8
INTENSITY UNSTABLE VIS MODERATE
REST OF THE AREA: SECTOR W 8 WITH GUSTS PROB OF RAIN SPELLS OF GOOD WEATHER VIS
POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR N 5/6 WITH GUSTS BACK SECTOR S
BY 27/1500 ISOL RAIN STORMS VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR W 8 WITH GUSTS RAIN
SPELLS OF GOOD WEATHER VIS POOR
REST OF THE AREA: SECTOR S 3/4 VIS GOOD
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR W 6 WITH GUSTS BACK
SECTOR S 5 WITH GUSTS BY 27/1800 LOW PROB OF DRIZZLE VIS MODERATE
REST OF THE AREA: SECTOR S 5 VEER SECTOR N BY 28/1200 LOW PROB OF DRIZZLE VIS
GOOD OCNL MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 4/5 WITH GUSTS VEER SECTOR W 8 WITH
GUSTS BY 28/0600 PROB OF RAIN STARTING NIGTH VIS MODERATE TO POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 27, NOVEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1377/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W IN 60S-65S 70W-90W
1378/2025 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E IN 65S-70S 70W-90W UNTIL 28/0000
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 995HPA 70S 55W MOV E WKN
LOW 998HPA 64S 60W MOV E DPN
RIDGE 60S 75W 65S 75W 70S 75W 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 04027W 32X24NM A74A 5425S 02631W 27X17NM A77 5336S 04004W 27X4NM A76C 5931S 03837W 16X7NM B15AB 5807S 04627W 11X4NM A23G 5315S 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 5101S 03721W 6X2NM ICEBERG8 5216S 03843W 3X3NM ICEBERG9 5230S 04142W 2X2NM ICEBERG10 5329S 03843W 3X3NM ICEBERG11 5140S 03701W 2X1NM ICEBERG12 5129S 03920W 4X2NM ICEBERG13 5020S 02345W 2X1NM ICEBERG14 5304S 03734W 3X1NM ICEBERG15 5255S 04013W 4X1NM ICEBERG16 5242S 04152W 2X1NM ICEBERG17 4953S 03828W 2X1NM ICEBERG18 5010S 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 5037S 03851W 9X6NM ICEBERG29 5129S 03645W 8X2NM 4.ICEBERGS AREA A 5938S 02000W 4600S 02000W 4600S 03100W 5800S 03100W B 5800S 03100W 4600S 03100W 4700S 03800W 5900S 03800W C 4700S 03800W 5900S 03800W 6400S 05700W 5900S 05700W D 6400S 05700W 6830S 06716W 6400S 06716W 6100S 05700W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-11-28
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 3/4 VEER SECTOR N BY 28/0000 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES WORSENING TOWARDS NIGTH VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR E 3/4 VEER SECTOR S BY 27/1800 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES WORSENING TOWARDS NIGTH VIS GOOD OCNL VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 3/4 VEER SECTOR N 5 BY 28/0300 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES WORSENING TOWARDS NIGTH VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR E 3/4 VEER SECTOR S BY 27/1800 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES WORSENING TOWARDS NIGTH VIS GOOD OCNL VERY POOR
GERLACHE STRAIT : SECTOR N 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR OCNL MODERATE
MARGARITA BAY : SECTOR S 3/4 BACK SECTOR E BY 28/0000 VIS GOOD
EREBUS Y TERROR GULF : SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES WORSENING TOWARDS NIGTH 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 IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 8 DECR 4 BY 28/0000 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 PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR=