1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-03-12, 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 WILL PROVOKE WINDS FORCE 8 FROM SECTOR
W WITH GUST BETWEEN 55S-60S 20W-40W FROM 13/0600
WARNING 103: LOW 993HPA AT 56S 65W MOV SE DEEPENING WILL PROVOKE WINDS FORCE 8
FROM SECTOR W WITH GUST IN DRAKE AREA (55S- 60S AND 60W- 67W) BETWEEN 55S-60S
AND 40W-60W FROM 12/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
111400 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 5742S 03539W 3X2NM ICEBERG2 5901S 04909W 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 7300S 02000W 6200S 04500W
4400S 04500W B 6200S 04500W 5800S 05500W 6500S 05500W 5700S 04500W C 5800S
05500W 6500S 05500W 6900S 06716W 6300S 06716W
LOW 993HPA 56S 63W MOV SE DPN EXTENDS CFNT AT 56S 63W 55S 62W 47S 61W MOV SE
ASOCIATED WITH OFNT AT 55S 61W 58S 66W 56S 66W
HIGH 1030HPA 41S 37W MOV SE EXP 42S 33W BY 13/1200 EXTENDS RIDGE AT 41S 37W 54S
35W 60S 35W MOV E
LOW 1011HPA 45S 61W MOV E WKN EXTENDS CFNT AT 45S 61W 41S 62W 37S 65W MOV E
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-03-13
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/5 BACK NE 4/3 PROB OF SH DURING THE MORNING
VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: E 4/5 BACK NE 4/3 PROB OF ISOL SH RAIN SPELLS OF GOOD
WEATHER VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SE 3/4 BACK E 3 PROB OF ISOL SH RAIN VIS GOOD OCNL
MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 3/4 PROB OF ISOL RAIN SPELLS OF
GOOD WEATHER VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): N 4/5 WITH GUSTS TEMPO VEER NE 5/6
WITH GUSTS PROB OF ISOL SH RAIN VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 4/5 WITH GUSTS BACK SECTOR S 4
BACK SECTOR N 4/6 WITH GUSTS PROB OF ISOL HVY RAIN STORMS VIS MODERATE OCNL
POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SW 3/4 VEER SECTOR N 4/5 WITH GUSTS DECR
3 PROB OF ISOL RAIN STORMS STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL
POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 4/6 WITH GUSTS VEER SECTOR N 4/6
WITH GUSTS BACK SECTOR S 5 WITH GUSTS PROB OF RAIN TOWARDS THE END OF THE PERIOD
VIS MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4/6 WITH GUSTS TEMPO VEER SECTOR N
5/6 WITH GUSTS VIS MODERATE
ISLAS MALVINAS COASTS: SECTOR N 6 WITH GUSTS TEMPO BACK SECTOR W 6/4 WITH GUSTS
PROB OF RAIN TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR S 3 BACK SECTOR E 3/4 PROB
OF ISOL RAIN VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR E 3/5 WITH GUSTS PROB OF ISOL SH RAIN VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SW 3/4 PROB OF
ISOL RAIN TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
W OF 30 - N OF 45S: SW 3 VEER SECTOR N VIS GOOD
REST OF THE AREA: SECTOR W 4/5 WITH GUSTS DECR 4 PROB OF ISOL RAIN IMPR
STARTING EARLY MORNING VIS GOOD OCNL MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR N 3/4 PROB OF ISOL
RAIN VIS GOOD OCNL MODERATE
REST OF THE AREA: NW 4/6 WITH GUSTS VEER N 5 WITH GUSTS PROB OF ISOL RAIN VIS
MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR W 5/3 INCR 4/5 WITH
GUSTS VIS GOOD OCNL MODERATE
REST OF THE AREA: SW 4 VEER NW 5/6 WITH GUSTS BACK W 6/8 WITH GUSTS BY 13/0600
PROB OF ISOL RAIN STARTING EVENING VIS GOOD TO POOR OCNL VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: NW 5/6 WITH GUSTS BACK W 5/3
VEER N 3/5 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 4/5 WITH GUSTS BACK SECTOR W 6/8 WITH GUSTS BY
12/2100 VEER SECTOR N 5/6 WITH GUSTS PROB OF RAIN IMPR STARTING EARLY MORNING
VIS POOR OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/8 WITH GUSTS VEER N 5/6 WITH
GUSTS BY 13/0000 PROB OF RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL VERY POOR
-----------------------------------------------------------------
NNNN=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 12, MARCH 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
331/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV SE DEEPENING WILL PROVOKE WINDS FORCE 8 WITH GUST IN 60S-63S 50W-30W FROM 13/0000 UNTIL 13/1800
332/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV SE DEEPENING WILL PROVOKE WINDS FORCE 8 WITH GUST IN 60S-65S 57W-51W FROM 13/0000 UNTIL 13/1200
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 977HPA 32S 80W MOV E WKN
LOW 976HPA 70S 78W MOV SE WKN
LOW 974HPA 72S 57W MOV E WKN
111400 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 5742S 03539W 3X2NM ICEBERG2 5901S 04909W 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 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 2026-03-13
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 3/4 INCR NW 5/6 BY 13/0000 PROB OF MIST PROB OFMOD RAIN WORSENING STARTING NOON VIS MODERATE TO POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 3/4 BACK SECTOR W 5/7 GUST WITH 8 INTENSITY BY 13/0000 PROB OF MIST PROB OFMOD RAIN AND SNOW MIXTURE IMPR STARTING NOON VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS W OF 60W: NW 3/4 INCR NW 5/6 BY 13/0000 PROB OF MIST PROB OFMOD RAIN WORSENING STARTING NOON VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 3/4 BACK SECTOR W 5/7 GUST WITH 8 INTENSITY BY 13/0300 PROB OF MIST PROB OFMOD RAIN AND SNOW MIXTURE WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR
GERLACHE STRAIT : SECTOR N 4/5 VEER NE 5/4 BY 13/0000 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS MODERATE TO POOR
MARGARITA BAY : SECTOR N 4/3 VEER NE 3/4 BY 13/0000 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : NW 4/5 WITH GUSTS DECR SECTOR S 4/3 BY 12/2300 AFTERWARDS NW 5/6 BY 13/0900 PROB OF FOG MIST WORSENING TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA W OF 80W: SECTOR N 3/4 INCR NW 5 BY 12/1800 PROB OF MIST PROB OFISOL DRIZZLE RAIN SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR N 5/6 GUST WITH 8 INTENSITY BACK NW 5/4 BY 13/0300 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NE 3/4 VEER SECTOR E 4/3 BY 13/0300 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER STARTING NIGTH VIS POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: NW 5/6 WITH GUSTS INCR NW 7/8 WITH GUSTS BY 13/0000 PROB OF MIST FOG PATCHES PROB OF RAIN AND SNOW MIXTURE WORSENING STARTING EVENING VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: NW 4/5 BACK SECTOR W 4/3 BY 12/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE NIGTH VIS GOOD TO MODERATE OCNL POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 4/3 BACK SECTOR E 4/3 BY 12/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS MODERATE TO GOOD=