1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-03-13, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 104: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 55S-60S AND 20W-50W UNTIL 14/0600
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 990HPA 58S 66W MOV SE EXTENDS CFNT AT 58S 66W 54S 62W 46S 68W
HIGH 1029HPA 41S 33W MOV E NC EXP 41S 30W BY 14/0900 EXTENDS RIDGE AT 41S 33W
60S 54W MOV E EXP 41S 30W 60S 27W BY 14/0900
CFNT AT 60S 26W 54S 32W 52S 46W
121400 UTC 1.SEA ICE LIMIT 7247S 02000W 7041S 03010W 7505S 03024W 6538S 03339W
7715S 03358W 6114S 03418W 7250S 03550W 6119S 04405W 6201S 05030W 6415S 05450W
6310S 05719W 6641S 06716W 2.ICEBERGS GREATER THAN 10NM A23K 5056S 03507W 10X7NM
A76C 5907S 03700W 16X7NM 3.ICEBERGS SMALLER THAN 10NM A23A 4901S 03246W 9X7NM
ICEBERG1 5742S 03539W 3X2NM ICEBERG2 5901S 04903W 2X1NM ICEBERG3 4841S 03355W
3X2NM ICEBERG4 5247S 03344W 7X2NM ICEBERG5 4713S 03350W 3X1NM ICEBERG6 4854S
03329W 4X2NM ICEBERG7 4850S 03317W 4X1NM ICEBERG8 4854S 03313W 3X2NM ICEBERG9
4903S 03303W 2X1NM 4.ICEBERGS AREA A 4400S 02000W 7400S 02000W 6200S 04500W
4400S 04500W B 6200S 04500W 5600S 04500W 6500S 05900W 6000S 06000W C 6000S
06000W 6500S 05900W 6900S 06716W 6400S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-03-14
COASTAL AREAS:
INNER RIO DE LA PLATA: NE 3/4 VIS GOOD
OUTER RIO DE LA PLATA: NE 4 LOW PROB OF ISOL RAIN DURING THE EVENING IMPR VIS
GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR E 4/5 WITH GUSTS PROB OF ISOL RAIN VIS GOOD
OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): NE 4/5 WITH GUSTS PROB OF ISOL RAIN VIS
GOOD OCNL POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 5 WITH GUSTS VEER SE BY
14/0300 PROB OF STORMS TOWARDS NIGTH VIS GOOD TO POOR
PENINSULA DE VALDES COASTS(41S - 45S): N 5 BACK SECTOR E 5/4 BY 13/1800 VIS
GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 5 BACK NE 5/6 WITH GUSTS BY
14/0000 VIS GOOD TO MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 5/6 WITH GUSTS BACK SECTOR N 6/7
GUST WITH 8 INTENSITY BY 14/0000 LOW PROB OF ISOL RAIN DURING THE EVENING IMPR
VIS GOOD TO MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 6/5 WITH GUSTS VEER NW 5/6 WITH
GUSTS BY 14/0900 LOW PROB OF ISOL RAIN VIS GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: SW 5/4 WITH GUSTS PROB OF ISOL RAIN DURING THE EVENING
VIS GOOD OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W): NE 5 WITH GUSTS PROB OF ISOL RAIN STORMS VIS
MODERATE OCNL GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR W 4 PROB OF ISOL RAIN
VIS GOOD OCNL MODERATE
W OF 30 - N OF 45S: VRB 3/4 VIS GOOD
REST OF THE AREA: W 4 VEER NW BY 14/0600 VIS GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR N 4/5 WITH GUSTS PROB
OF ISOL RAIN VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS BACK SECTOR S 4 BY 14/0600 PROB OF
ISOL RAIN STORMS VIS MODERATE TO GOOD OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR W 5/4 WITH GUSTS PROB
OF ISOL RAIN VIS MODERATE
E OF 30 - S OF 55S: SECTOR W 7/8 WITH GUSTS BACK SW 7/6 WITH GUSTS BY 14/0600
PROB OF RAIN SNOW FALL TOWARDS THE END OF THE PERIOD IMPR VIS POOR TO MODERATE
OCNL VERY POOR
REST OF THE AREA: SECTOR W 8 WITH GUSTS VEER NW 6/7 WITH GUSTS BY 14/0000 PROB
OF RAIN STARTING NIGTH VIS MODERATE TO VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: NW 4/5 WITH GUSTS
INCR 6 WITH GUSTS BY 13/2100 PROB OF RAIN VIS MODERATE TO POOR
W OF 50 - N OF 55S: SECTOR N 4 BACK SW 5 WITH GUSTS BY 14/0300 PROB OF RAIN
DURING THE NIGTH IMPR VIS POOR TO GOOD
E OF 50 - S OF 55S: W 8/6 WITH GUSTS VEER NW 5/6 WITH GUSTS BY 13/1500 BACK W
4/5 BY 14/0900 PROB OF RAIN STARTING EVENING VIS MODERATE TO POOR OCNL VERY
POOR
REST OF THE AREA: SECTOR N 6/7 WITH GUSTS BACK SECTOR W 6/5 WITH GUSTS BY
14/0000 PROB OF ISOL RAIN STARTING NIGTH VIS GOOD OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 7/6 WITH GUSTS PROB OF ISOL RAIN
VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 13, MARCH 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
336/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-63S 47W-30W UNTIL 13/1800
337/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT EREBUS Y TERROR GULF MOV SE DEEPENING WILL PROVOKE WINDS FORCE 8 WITH GUST IN 60S-65S 60W-50W FROM 13/1500 UNTIL 14/0300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 980HPA 66S 76W MOV E WKN
LOW 987HPA 60S 65W MOV SE DPN
LOW 975HPA 64S 35W MOV SE DPN
LOW 981HPA 73S 54W MOV E WKN
RIDGE 60S 49W 63S 50W 67S 51W MOV E INTSF
121400 UTC 1.SEA ICE LIMIT 7247S 02000W 7041S 03010W 7505S 03024W 6538S 03339W 7715S 03358W 6114S 03418W 7250S 03550W 6119S 04405W 6201S 05030W 6415S 05450W 6310S 05719W 6641S 06716W 2.ICEBERGS GREATER THAN 10NM A23K 5056S 03507W 10X7NM A76C 5907S 03700W 16X7NM 3.ICEBERGS SMALLER THAN 10NM A23A 4901S 03246W 9X7NM ICEBERG1 5742S 03539W 3X2NM ICEBERG2 5901S 04903W 2X1NM ICEBERG3 4841S 03355W 3X2NM ICEBERG4 5247S 03344W 7X2NM ICEBERG5 4713S 03350W 3X1NM ICEBERG6 4854S 03329W 4X2NM ICEBERG7 4850S 03317W 4X1NM ICEBERG8 4854S 03313W 3X2NM ICEBERG9 4903S 03303W 2X1NM 4.ICEBERGS AREA A 4400S 02000W 7400S 02000W 6200S 04500W 4400S 04500W B 6200S 04500W 5600S 04500W 6500S 05900W 6000S 06000W C 6000S 06000W 6500S 05900W 6900S 06716W 6400S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-03-14
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 3/4 INCR NW 5 BY 14/0000 PROB OF MIST PROB OFMOD DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 6/7 GUST WITH 8 INTENSITY DECR NW 5 WITH GUSTS BY 14/0300 PROB OF MIST PROB OFMOD RAIN AND SNOW MIXTURE IMPR STARTING NIGTH VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS W OF 60W: NW 3/4 INCR NW 5 BY 14/0000 PROB OF MIST PROB OFMOD DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 6/7 GUST WITH 8 INTENSITY DECR NW 5 WITH GUSTS BY 14/0000 PROB OF MIST PROB OFMOD RAIN AND SNOW MIXTURE IMPR STARTING NIGTH VIS POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : NE 5/7 DECR NE 5/4 BY 14/0000 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO POOR
MARGARITA BAY : SECTOR N 5/6 VEER NE 5/4 BY 13/2100 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE IMPR STARTING EVENING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : NW 6/7 WITH GUSTS VEER NE 5/4 BY 13/2100 PROB OF FOG MIST PROB OFMOD RAIN AND SNOW MIXTURE WORSENING STARTING EVENING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 4/5 VEER NW 5/6 BY 13/2100 AFTERWARDS SECTOR W 4 BY 14/0300 PROB OF MIST PROB OFSCT SH SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR N 5/6 WITH GUSTS BACK NW 4 BY 13/0900 PROB OF MIST PROB OFISOL DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE MORNING VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 3/4 VEER NE 4/3 BY 13/2100 AFTERWARDS SECTOR E 4 BY 14/0600 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA N OF 64S: SECTOR W 6/8 WITH GUSTS BACK SW 7 WITH GUSTS BY 13/1800 AFTERWARDS SECTOR N 6/7 GUST WITH 8 INTENSITY BY 13/2100 PROB OF MIST FOG PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NW 3/4 INCR NW 4/5 BY 13/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SW 4/5 VEER SECTOR W 5/6 BY 14/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS MODERATE TO POOR=