WWAA02 SAWB 211200

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

12:00 UTC 21, APRIL 2026.

NATIONAL WEATHER SERVICE (NWS)

SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS

PART 1 GALE WARNING:

555/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 GUST WITH 9 INTENSITY BACK SECTOR W IN 60S-64S 82W-70W UNTIL 22/0000

556/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV SE DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-64S 70W-60W UNTIL 22/0600

557/2026 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR N WITH GUST IN 62S-67S 59W-60W UNTIL 22/0000

558/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MARGARITA BAY MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E WITH GUST IN 65S-69S 70W-65W UNTIL 21/1800

PART 2 GENERAL SYNOPSIS AT 09:00UTC

LOW 959HPA 63S 81W MOV SE DPN

LOW 960HPA 67S 57W MOV SE DPN

HIGH 1005HPA 70S 50W MOV NE INTSF EXTENDS RIDGE AT 70S 50W 66S 49W 63S 48W MOV NE

211400 UTC 1.SEA ICE LIMIT 6840S 02000W 6828S 02729W 6327S 03132W 6009S 03309W 6059S 03952W 6217S 05036W 6337S 05311W 6313S 05740W 6339S 06042W 6431S 06416W 6601S 06544W 6644S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5850S 03546W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4623S 02814W 6X3NM ICEBERG2 4848S 03004W 5X3NM ICEBERG3 4629S 02736W 4X2NM ICEBERG4 4656S 02738W 3X1NM ICEBERG5 5825S 03611W 3X1NM ICEBERG6 4319S 03357W 2X1NM 4.ICEBERGS AREA A6859S 02000W 4124S 02000W 4307S 03613W 6507S 03625W B6107S 03625W 4305S 03613W 6002S 05503W 6328S 05500W C6328S 05500W 6002S 05503W 6445S 06716W 6638S 06716W

PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-22

COASTAL AREAS:

SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 7/8 GUST WITH 9 INTENSITY DECR NW 6/5 BY 22/0300 PROB OF FOG AND MIST IN PATCHES PROB OFMOD RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE

SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NE 5/6 BACK NW 6 BY 21/1800 PROB OF MIST PROB OFMOD RAIN IMPR TOWARDS NIGTH VIS POOR TO MODERATE

MAR DE LA FLOTA COASTS W OF 60W: NW 7/8 GUST WITH 9 INTENSITY DECR NW 6/5 BY 22/0300 PROB OF FOG AND MIST IN PATCHES PROB OFMOD RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE

MAR DE LA FLOTA COASTS REST OF THE AREA: NE 5/6 BACK NW 6 BY 21/1800 PROB OF MIST PROB OFMOD RAIN IMPR TOWARDS NIGTH VIS POOR TO MODERATE

GERLACHE STRAIT : SECTOR E 8 GUST WITH 9 INTENSITY DECR SECTOR E 7 WITH GUSTS BY 21/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE

MARGARITA BAY : SECTOR E 9 WITH GUSTS DECR SECTOR E 7/5 WITH GUSTS BY 22/0300 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS MODERATE TO POOR

EREBUS Y TERROR GULF : NE 7/8 WITH GUSTS BACK NW 6/5 WITH GUSTS BY 21/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS MODERATE TO VERY POOR

OCEANIC AREAS:

NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR N 7/8 WITH GUSTS BACK NW 7/8 WITH GUSTS BY 21/1800 AFTERWARDS NW 6/5 BY 22/0000 PROB OF MIST PROB OFINTERMITTENT RAIN SPELLS OF GOOD WEATHER STARTING NIGTH VIS POOR TO MODERATE

NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR E 7/8 WITH GUSTS BACK NE 5/4 BY 21/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE

SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 7/8 WITH GUSTS DECR SECTOR E 5 WITH GUSTS BY 21/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE

NORTHERN WEDDELL SEA N OF 65S: SE 5/4 BACK NE 5/4 BY 21/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD

NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR S 4/3 BACK NE 4/3 BY 21/2100 PROB OF FOG AND MIST IN PATCHES IMPR STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD

SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 4/5 BACK SE 4/3 BY 22/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD=