1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 11, MARCH 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
324/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 61S-64S 50W-40W UNTIL 12/0300
325/2026 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MAR DE LA FLOTA COASTS PROVOKES WINDS FORCE 8 WITH GUST IN 62S-65S 58W-50W UNTIL 12/1500
326/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS PROVOKES WINDS FORCE 8 WITH GUST IN 60S-64S 70W-55W UNTIL 11/1800
327/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA PROVOKES WINDS FORCE 8 WITH GUST IN 60S-64S 78W-70W UNTIL 12/0000
328/2026 STRONG BARIC GRADIENT GERLACHE STRAIT PROVOKES WINDS FORCE 8 FROM NE IN 64S-67S 68W-63W UNTIL 11/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 987HPA 65S 53W MOV E DPN
LOW 963HPA 63S 82W MOV SE DPN EXTENDS CFNT AT 63S 82W 67S 75W 62S 68W MOV E
RIDGE 60S 53W 63S 55W 65S 57W MOV E WKN
101400 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 5104S 03502W 10X7NM A76C 5908S 03705W 16X7NM 3.ICEBERGS SMALLER THAN 10NM A23A 4901S 03246W 9X7NM ICEBERG1 5748S 03559W 3X2NM ICEBERG2 5901S 04922W 2X1NM ICEBERG3 4841S 03355W 3X2NM ICEBERG4 5251S 03344W 7X2NM ICEBERG5 4713S 03350W 3X1MN ICEBERG6 4854S 03329W 4X2MN ICEBERG7 4852S 03323W 4X1MN ICEBERG8 4854S 03313W 3X2MN ICEBERG9 4903S 03303W 2X1MN 4.ICEBERGS AREA A 4400S 02000W 7300S 02000W 6200S 04500W 4400S 04500W B 6200S 04500W 5800S 05500W 6500S 05500W 5700S 04500W C 5800S 05500W 6500S 05500W 6900S 06716W 6300S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-03-12
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR N 6/8 WITH GUSTS BACK NW 8 BY 11/2100 PROB OF SCT MIST FOG PATCHES PROB OFINTERMITTENT RAIN IMPR DURING THE EVENING VIS VERY POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 4/5 INCR NW 8 BY 11/1800 PROB OF MIST PROB OFISOL RAIN WORSENING STARTING NOON VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR N 6/8 WITH GUSTS BACK NW 8 BY 11/2100 PROB OF SCT MIST FOG PATCHES PROB OFINTERMITTENT RAIN IMPR DURING THE EVENING VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 4/5 INCR NW 8 BY 11/1800 PROB OF MIST PROB OFISOL RAIN WORSENING STARTING NOON VIS MODERATE TO POOR
GERLACHE STRAIT : NE 7/8 DECR SECTOR N 5/4 BY 11/2100 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE TO POOR
MARGARITA BAY : NE 4/5 INCR SECTOR E 6/8 WITH GUSTS BY 11/2100 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE WORSENING DURING THE NIGTH VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : NW 5/6 WITH GUSTS INCR NW 8 WITH GUSTS BY 11/1500 AFTERWARDS NW 9/8 BY 11/1800 PROB OF MIST IMPR DURING THE EARLY MORNING VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA W OF 80W: SECTOR W 4/5 INCR NW 5/7 BY 12/0300 PROB OF MIST PROB OFISOL DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR N 6/7 GUST WITH 8 INTENSITY BACK SECTOR W 6/5 BY 11/2100 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NE 5/6 VEER SECTOR E 4 BY 12/0000 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA N OF 65 - W OF 40W: SECTOR W 6/8 WITH GUSTS DECR NW 5 WITH GUSTS BY 12/0000 AFTERWARDS SECTOR N 4 BY 12/0600 PROB OF MIST FOG PATCHES IMPR DURING THE EVENING VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 5/4 BACK SW 4/3 BY 12/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NIGTH VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 4/5 DECR SW 3 BY 11/2100 PROB OF FOG MIST IMPR STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-03-11, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1030HPA 40S 42W MOV E INTSF EXP 41S 36W BY 12/1200 EXTENDS RIDGE AT 40S 42W
50S 38W 58S 38W MOV E
LOW 999HPA 51S 69W MOV SE DPN EXP 58S 58W BY 12/1200 EXTENDS CFNT AT 51S 67W 47S
69W 44S 70W MOV E
101400 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 5104S 03502W 10X7NM
A76C 5908S 03705W 16X7NM 3.ICEBERGS SMALLER THAN 10NM A23A 4901S 03246W 9X7NM
ICEBERG1 5748S 03559W 3X2NM ICEBERG2 5901S 04922W 2X1NM ICEBERG3 4841S 03355W
3X2NM ICEBERG4 5251S 03344W 7X2NM ICEBERG5 4713S 03350W 3X1MN ICEBERG6 4854S
03329W 4X2MN ICEBERG7 4852S 03323W 4X1MN ICEBERG8 4854S 03313W 3X2MN ICEBERG9
4903S 03303W 2X1MN 4.ICEBERGS AREA A 4400S 02000W 7300S 02000W 6200S 04500W
4400S 04500W B 6200S 04500W 5800S 05500W 6500S 05500W 5700S 04500W C 5800S
05500W 6500S 05500W 6900S 06716W 6300S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-03-12
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 4/5 PROB OF ISOL RAIN VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: SECTOR E 4/5 PROB OF ISOL RAIN VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR E 4/5 PROB OF ISOL RAIN VIS GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR E 4/5 VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 5/6 WITH GUSTS INCR 7 BY
12/0300 VIS GOOD TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5/6 WITH GUSTS INCR 7 BY
12/0300 PROB OF RAIN STORMS TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5/6 WITH GUSTS TEMPO BACK
SECTOR W BY 12/0300 PROB OF ISOL RAIN VIS GOOD TO MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 4/5 BACK SECTOR W 6/7 WITH GUSTS
PROB OF ISOL RAIN VIS GOOD TO MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 5/6 WITH GUSTS BACK SECTOR W 6/7
WITH GUSTS BY 12/0900 PROB OF SH RAIN VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR N 5/6 WITH GUSTS VIS GOOD OCNL MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR S 3/4 VIS GOOD
REST OF THE AREA: SECTOR E 4 WITH GUSTS PROB OF ISOL RAIN VIS GOOD OCNL
MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR W 5/6 WITH GUSTS TEMPO BACK
SECTOR S BY 11/1500 PROB OF ISOL RAIN VIS GOOD TO MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR N 4/5 WITH GUSTS PROB OF ISOL
RAIN VIS GOOD OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 5/6 WITH GUSTS PROB OF ISOL
RAIN VIS GOOD OCNL MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR E 3/4 VEER SECTOR N 5/6 WITH
GUSTS BY 11/2100 PROB OF SH VIS GOOD TO MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 6/7 WITH GUSTS BACK VRB 3 BY
11/1800 PROB OF SH RAIN VIS POOR OCNL VERY POOR
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