1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-11, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 149: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST BETWEEN 40S-50S AND 20W-30W FROM 11/1500
WARNING 147: LOW 969HPA AT 55S 28W MOV E DEEPENING PROVOKES WINDS FORCE 8 AROUND
ITSELF WITH GUST BETWEEN 50S-60S AND 20W-30W FROM 11/1500
WARNING 144: LOW 978HPA AT 53S 36W MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM
SECTOR W WITH GUST BETWEEN 45S-55S AND 30W-50W UNTIL 11/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
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
RIDGE 35S 47W 45S 51W 59S 54W MOV E NC
LOW 969HPA 55S 28W MOV E DPN EXTENDS CFNT AT 55S 28W 45S 26W 39S 36W MOV E
ASOCIATED WITH OFNT AT 55S 28W 56S 42W 51S 39W
LOW 978HPA 53S 36W MOV E WKN
CFNT AT 60S 69W 53S 65W 47S 70W MOV E
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-12
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3 BACK SECTOR N MIST DISSIPATING PROB OFISOL
RAIN STARTING NIGTH VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR N 3 VEER SECTOR E MIST DISSIPATING PROB OFISOL
RAIN STARTING EARLY MORNING VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR N 3/4 PROB OF ISOL MIST DISSIPATING PROB
OFISOL SH RAIN STARTING EARLY MORNING VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): NW 3/4 VEER N 4/5 DECR 4 PROB OF ISOL
RAIN STARTING EARLY MORNING VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 3/5 WITH GUSTS INCR 6 WITH
GUSTS PROB OF ISOL RAIN TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 4/6 WITH GUSTS PROB OF ISOL
RAIN TOWARDS THE END OF THE PERIOD VIS MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): NW 5/6 WITH GUSTS BACK SW WITH GUSTS
PROB OF RAIN STARTING EARLY MORNING VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): NW 6/4 WITH GUSTS BACK SECTOR S 5/6 WITH
GUSTS VEER SECTOR W 4/5 PROB OF RAIN STARTING EVENING VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4/5 WITH GUSTS PROB OF ISOL RAIN
TOWARDS NIGTH VIS GOOD TO MODERATE
ISLAS MALVINAS COASTS: SECTOR N 6/4 WITH GUSTS BACK SECTOR S 5/6 WITH GUSTS PROB
OF RAIN STARTING NIGTH VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR W 5/4 WITH GUSTS BACK SECTOR
S 5/3 PROB OF ISOL RAIN IMPR TOWARDS THE END OF THE PERIOD VIS GOOD OCNL
MODERATE
REST OF THE AREA: SECTOR W 4/3 VEER SECTOR N 3/4 PROB OF ISOL SH RAIN STARTING
EARLY MORNING VIS GOOD TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR W 6 WITH GUSTS INCR
8/6 WITH GUSTS BY 11/1500 PROB OF RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL VERY
POOR
W OF 30W - N OF 45S: SW 5/6 WITH GUSTS DECR 5/3 PROB OF ISOL RAIN IMPR STARTING
NIGTH VIS MODERATE TO GOOD
REST OF THE AREA: SECTOR W 8 WITH GUSTS DECR 6/4 BY 11/2100 PROB OF ISOL RAIN
IMPR STARTING EARLY MORNING VIS POOR OCNL VERY POOR TO MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W - N OF 45S: SW 4/3 VEER NW
3/4 PROB OF ISOL RAIN TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
E OF 50W - S OF 45S: SECTOR W 8/6 WITH GUSTS VEER NW 4/5 WITH GUSTS VIS POOR TO
MODERATE
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS PROB OF ISOL RAIN TOWARDS THE END OF
THE PERIOD VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W - N OF 55S: SECTOR W 6/8 WITH
GUSTS BACK SECTOR S 8 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS POOR OCNL
VERY POOR
E OF 30W - S OF 55S: SECTOR S 6/8 WITH GUSTS DECR 6 WITH GUSTS PROB OF RAIN AND
SNOW MIXTURE VIS POOR OCNL VERY POOR
W OF 30W - N OF 55S: SECTOR W 8 WITH GUSTS BACK SW 6/4 WITH GUSTS VEER SECTOR N
6 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS POOR OCNL
VERY POOR
REST OF THE AREA: SECTOR S 6/4 WITH GUSTS VEER SECTOR N 5 WITH GUSTS PROB OF
SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W - N OF 55S: SECTOR W 8/5 WITH
GUSTS VEER SECTOR N 5/6 WITH GUSTS PROB OF ISOL RAIN VIS POOR OCNL VERY POOR
E OF 50W - S OF 55S: SECTOR S 6/4 WITH GUSTS VEER SECTOR N 4/6 WITH GUSTS PROB
OF RAIN STARTING EARLY MORNING VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS BACK SECTOR W 4 PROB OF RAIN SPELLS
OF GOOD WEATHER VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): N 6 GUST WITH 8 INTENSITY BACK NW WITH GUSTS
PROB OF RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
-----------------------------------------------------------------
NNNN=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 11, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
485/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 GUST WITH 9 INTENSITY IN 60S-64S 82W-70W UNTIL 12/0300
486/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E GUST WITH 9 INTENSITY IN 64S-68S 90W-70W UNTIL 12/0600
487/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM NE GUST WITH 9 INTENSITY IN 60S-65S 70W-55W UNTIL 12/0600
488/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E GUST WITH 9 INTENSITY IN 65S-75S 70W-65W UNTIL 12/0300
489/2026 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM NE WITH GUST IN 65S-67S 59W-50W UNTIL 12/0300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 944HPA 61S 85W MOV SE WKN
LOW 957HPA 63S 73W MOV SE DPN
HIGH 1002HPA 65S 44W 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 2026-04-12
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NE 9 WITH GUSTS BACK NW 8 GUST WITH 9 INTENSITY BY 11/1500 AFTERWARDS NW 8 WITH GUSTS BY 11/1500 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NE 7/8 INCR NE 9 BY 11/1800 AFTERWARDS NW 5/7 WITH GUSTS BY 12/0000 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN WORSENING STARTING NOON VIS GOOD TO MODERATE OCNL VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: NE 9 WITH GUSTS BACK NW 8 GUST WITH 9 INTENSITY BY 11/1500 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: NE 7/8 INCR NE 9 BY 11/1800 AFTERWARDS NW 5/7 WITH GUSTS BY 12/0000 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN WORSENING STARTING NOON VIS GOOD TO MODERATE OCNL VERY POOR
GERLACHE STRAIT : SECTOR E 7/8 WITH GUSTS INCR SECTOR E 9 WITH GUSTS BY 11/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING TOWARDS NOON VIS GOOD TO MODERATE OCNL POOR
MARGARITA BAY : SECTOR E 7/8 WITH GUSTS INCR SECTOR E 9 WITH GUSTS BY 11/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : NE 5/7 INCR NE 8 WITH GUSTS BY 11/2100 PROB OF FOG AND MIST IN PATCHES PROB OFMOD SNOW FALL WORSENING DURING THE EVENING VIS MODERATE TO VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 65S: NW 8 WITH GUSTS VEER SECTOR N 8 WITH GUSTS BY 11/1800 AFTERWARDS SECTOR W 5/4 BY 12/0000 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR E 7/8 WITH GUSTS VEER SE 8 WITH GUSTS BY 11/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SE 4/5 BACK SECTOR E 6 WITH GUSTS BY 11/1800 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER STARTING EVENING VIS POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SE 3/4 BACK NE 5/6 BY 11/2200 PROB OF MIST PROB OF RAIN AND SNOW MIXTURE IMPR TOWARDS NIGTH VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: VRB 3 INCR SECTOR N 4 BY 11/2100 PROB OF FOG AND MIST IN PATCHES WORSENING DURING THE NIGTH VIS GOOD TO MODERATE OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): VRB 3 INCR SE 4 BY 11/2100 VIS GOOD=