1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 12, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
495/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E GUST WITH 9 INTENSITY IN 64S-68S 80W-70W UNTIL 13/0000
496/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR N GUST WITH 9 INTENSITY IN 60S-64S 60W-50W UNTIL 13/0000
497/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR N GUST WITH 9 INTENSITY IN 60S-68S 50W-40W UNTIL 13/0300
498/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E GUST WITH 9 INTENSITY IN 65S-67S 68W-65W UNTIL 12/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 953HPA 64S 80W MOV SE WKN
LOW 954HPA 67S 87W MOV SE WKN
LOW 981HPA 66S 55W MOV SE DPN
HIGH 1013HPA 63S 32W MOV NE INTSF
111400 UTC 1.SEA ICE LIMIT 6918S 01950W 6930S 02633W 6707S 03153W 6041S 03421W 6306S 03503W 6228S 04351W 6238S 04957W 6336S 05349W 6258S 05526W 6341S 06153W 6458S 06435W 6600S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5928S 03619W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5125S 03045W 2X1NM ICEBERG2 4635S 02825W 2X1NM ICEBERG3 4653S 02745W 6X3NM ICEBERG4 5007S 03128W 5X3NM ICEBERG5 4701S 02811W 4X2NM ICEBERG6 4703S 02757W 3X1NM ICEBERG7 5857S 03559W 3X1NM ICEBERG8 4320S 03541W 2X1NM 4.ICEBERGS AREA A7000S 02000W 4600S 02000W 4300S 03500W 7030S 02400W B7030S 02400W 4300S 03500W 6000S 05000W 6300S 05000W C6300S 05000W 6000S 05000W 6400S 06716W 6700S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-13
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 8 GUST WITH 9 INTENSITY VEER SECTOR N 8 GUST WITH 9 INTENSITY BY 12/1800 PROB OF MIST PROB OFINTERMITTENT SH SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 5/6 INCR NW 6/8 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: NW 8 GUST WITH 9 INTENSITY VEER SECTOR N 8 GUST WITH 9 INTENSITY BY 12/1800 PROB OF MIST PROB OFINTERMITTENT SH SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 5/6 INCR NW 6/8 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
GERLACHE STRAIT : SECTOR E 6/8 WITH GUSTS INCR SECTOR E 9 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS GOOD TO MODERATE
MARGARITA BAY : SECTOR E 7/8 WITH GUSTS INCR SECTOR E 9 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : SECTOR S 4/5 WITH GUSTS VEER NW 5/7 WITH GUSTS BY 12/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA E OF 80 - N OF 65S: NW 8 WITH GUSTS VEER SECTOR N 4/5 BY 12/1800 PROB OF MIST PROB OFSCT SH WORSENING DURING THE EVENING VIS MODERATE TO POOR
NORTHER BELLINGSHAUSEN SEA W OF 80 - N OF 65S: NW 4/5 WITH GUSTS VEER SECTOR E 5/6 BY 12/2100 AFTERWARDS SE 5 BY 13/0300 PROB OF MIST PROB OFSCT SH SPELLS OF GOOD WEATHER DURING THE NOON VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR E 8 WITH GUSTS VEER SE 8/7 WITH GUSTS BY 12/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SE 5/6 BACK SECTOR E 6/7 WITH GUSTS BY 12/2100 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER STARTING EVENING VIS POOR TO MODERATE
NORTHERN WEDDELL SEA W OF 40W: SECTOR N 9 WITH GUSTS VEER NE 8 WITH GUSTS BY 12/1800 AFTERWARDS SECTOR W 5/6 BY 13/0000 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR STARTING NIGTH VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NE 4/5 INCR NE 7/8 BY 12/1800 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 4/5 INCR NE 5/6 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NOON VIS GOOD TO MODERATE=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-12, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 151: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM NW WITH GUST
IN FIN DEL MUNDO COASTS DRAKE AREA (55S- 60S AND 60W- 67W) FROM 12/2100
WARNING 150: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR N WITH
GUST BETWEEN 55S-60S 30W-50W FROM 12/1200
WARNING 149: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 9 FROM SW WITH
GUST BETWEEN 40S-50S AND 20W-30W
WARNING 147: LOW 966HPA AT 54S 23W MOV E DEEPENING PROVOKES WINDS FORCE 9 AROUND
ITSELF WITH GUST BETWEEN 50S-60S AND 20W-30W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 966HPA 54S 23W MOV E DPN
CFNT AT 56S 59W 50S 63W 45S 69W MOV NE
HIGH 1023HPA 36S 42W MOV SE INTSF EXP 40S 36W BY 12/1200
111400 UTC 1.SEA ICE LIMIT 6918S 01950W 6930S 02633W 6707S 03153W 6041S 03421W
6306S 03503W 6228S 04351W 6238S 04957W 6336S 05349W 6258S 05526W 6341S 06153W
6458S 06435W 6600S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5928S 03619W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5125S 03045W 2X1NM ICEBERG2 4635S 02825W
2X1NM ICEBERG3 4653S 02745W 6X3NM ICEBERG4 5007S 03128W 5X3NM ICEBERG5 4701S
02811W 4X2NM ICEBERG6 4703S 02757W 3X1NM ICEBERG7 5857S 03559W 3X1NM ICEBERG8
4320S 03541W 2X1NM 4.ICEBERGS AREA A7000S 02000W 4600S 02000W 4300S 03500W 7030S
02400W B7030S 02400W 4300S 03500W 6000S 05000W 6300S 05000W C6300S 05000W 6000S
05000W 6400S 06716W 6700S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-04-13
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 5/4 BACK SECTOR N 4/3 BY 12/0900 PROB OF SH
DURING THE NIGTH VIS MODERATE TO GOOD
OUTER RIO DE LA PLATA: NE 5/4 WITH GUSTS BACK VRB 4/3 BY 12/1500 PROB OF SH IMPR
STARTING EVENING VIS MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: NE 6/5 WITH GUSTS BACK SECTOR S 4/3 WITH GUSTS BY
12/1800 PROB OF RAIN STORMS IMPR STARTING NIGTH VIS MODERATE TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 5 WITH GUSTS BACK SECTOR W 4/3
BY 12/1200 LOW PROB OF ISOL RAIN IMPR STARTING EARLY MORNING VIS MODERATE TO
GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 6/7 GUST WITH 8 INTENSITY
BACK SECTOR S 5 WITH GUSTS BY 12/1500 PROB OF SH DURING THE MORNING VIS
MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 7/6 GUST WITH 8 INTENSITY BACK
SECTOR S 6/5 WITH GUSTS BY 12/0900 VIS MODERATE TO GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 7/6 GUST WITH 8 INTENSITY BACK
SECTOR N 4/5 WITH GUSTS BY 12/1500 INCR 5/6 WITH GUSTS BY 12/2100 PROB OF ISOL
RAIN IMPR STARTING EVENING VIS MODERATE TO GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 6/5 WITH GUSTS VEER SECTOR N 6/7
GUST WITH 8 INTENSITY BY 12/1200 PROB OF SH RAIN IMPR STARTING EVENING VIS
MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): NW 6/7 GUST WITH 8 INTENSITY INCR 7/8 WITH
GUSTS BY 12/2100 PROB OF ISOL RAIN IMPR STARTING EARLY MORNING NEXT UNSTABLE VIS
MODERATE TO POOR
ISLAS MALVINAS COASTS: SECTOR S 7/6 GUST WITH 8 INTENSITY VEER SECTOR W 6/5 WITH
GUSTS BY 12/1500 AFTERWARDS NW 6/7 GUST WITH 8 INTENSITY BY 12/2100 PROB OF RAIN
IMPR STARTING NIGTH VIS MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SW 6/7 GUST WITH 8 INTENSITY PROB
OF SH RAIN IMPR STARTING EVENING VIS MODERATE OCNL POOR
N OF 30 - E OF 40W: SW 4/3 BACK SECTOR N 3 BY 12/0900 VIS GOOD
E OF 50 - W OF 40W: NW 3/4 VEER SECTOR N 5/6 WITH GUSTS BY 12/0900 NE 6/7 GUST
WITH 8 INTENSITY BY 12/1800 PROB OF RAIN STORMS STARTING EARLY MORNING VIS GOOD
TO POOR
REST OF THE AREA: SECTOR N 5 WITH GUSTS VEER SW 6/7 GUST WITH 8 INTENSITY BY
12/1500 PROB OF RAIN STORMS VIS MODERATE TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SW 9/8 WITH GUSTS PROB OF SH
RAIN IMPR STARTING EVENING VIS POOR OCNL VERY POOR
REST OF THE AREA: SW 7/6 GUST WITH 8 INTENSITY VEER NW 5 WITH GUSTS BY 12/0900
VIS MODERATE OCNL POOR TO GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: NW 5/6 WITH GUSTS INCR 6/7
GUST WITH 8 INTENSITY BY 12/1500 PROB OF RAIN STORMS STARTING EVENING VIS GOOD
TO MODERATE OCNL POOR
REST OF THE AREA: NW 7/6 GUST WITH 8 INTENSITY BACK SECTOR S 6/5 WITH GUSTS BY
12/1500 PROB OF SH RAIN STARTING EVENING VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55 - E OF 30W: SW 9/8 WITH GUSTS
PROB OF SH RAIN VIS POOR OCNL VERY POOR
S OF 55 - E OF 30W: SECTOR S 9/8 WITH GUSTS DECR 6/6 GUST WITH 8 INTENSITY BY
12/2100 PROB OF RAIN VIS POOR OCNL VERY POOR
N OF 55 - W OF 30W: SW 5 WITH GUSTS BACK SECTOR N 6/7 GUST WITH 8 INTENSITY BY
12/0900 PROB OF ISOL RAIN STARTING EVENING VIS MODERATE
REST OF THE AREA: SECTOR S 5 WITH GUSTS BACK SECTOR N 7/8 WITH GUSTS BY 12/1200
PROB OF RAIN STARTING EARLY MORNING VIS MODERATE TO POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55 - E OF 50W: SECTOR N 6/7 GUST
WITH 8 INTENSITY INCR 7/8 WITH GUSTS BY 12/1200 PROB OF RAIN STARTING EARLY
MORNING VIS MODERATE TO POOR
N OF 55 - E OF 50W: SECTOR N 6/7 GUST WITH 8 INTENSITY BACK NW 6/5 WITH GUSTS
BY 12/0600 PROB OF ISOL RAIN STARTING EARLY MORNING VIS MODERATE OCNL POOR
N OF 55 - W OF 50W: NW 5/6 WITH GUSTS BACK SECTOR S 6/7 GUST WITH 8 INTENSITY
BY 12/1200 VEER SECTOR W 6/5 WITH GUSTS BY 12/1800 PROB OF ISOL RAIN STARTING
EARLY MORNING VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 7/6 GUST WITH 8 INTENSITY BACK SECTOR W 5 WITH GUSTS
BY 12/0600 VEER NW 6 WITH GUSTS BY 12/2100 PROB OF RAIN VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): NW 6/7 GUST WITH 8 INTENSITY INCR 7/8 WITH
GUSTS BY 12/2100 PROB OF RAIN VIS MODERATE TO POOR
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