1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-23, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 172: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST IN GOLFO DE SAN JORGE COASTS FROM 23/1500
WARNING 171: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR N
WITH GUST IN DRAKE AREA (55S- 60S AND 60W- 67W) UNTIL 23/1800
WARNING 170: LOW 988HPA AT 45S 51W MOV E WEAKENING EXPECTED 52S 36W BY 24/1200
PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST BETWEEN 45S-50S AND 45W-55W
WARNING 169: LOW 988HPA AT 45S 51W MOV E WEAKENING EXPECTED 52S 36W BY 24/1200
PROVOKES WINDS FORCE 8 FROM SECTOR N WITH GUST BETWEEN 40S-50S AND 45W-30W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
231400 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 5839S 03606W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4652S 02859W 6X3NM ICEBERG2 4951S 02816W
5X3NM ICEBERG3 4659S 02857W 4X2NM ICEBERG4 4703S 02903W 3X1NM ICEBERG5 5752S
03615W 3X1NM ICEBERG6 4409S 03514W 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
LOW 988HPA 45S 51W MOV E DPN EXTENDS CFNT AT 47S 49W 40S 45W 31S 49W MOV E
LOW 962HPA 60S 69W MOV SE WKN EXTENDS CFNT AT 62S 66W 52S 65W 47S 70W MOV E
HIGH 1030HPA 47S 29W MOV E INTSF
HIGH 1021HPA 33S 60W MOV E EXP 35S 48W BY 24/1200
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-24
COASTAL AREAS:
INNER RIO DE LA PLATA: VRB 3/4 BACK SECTOR E VIS GOOD
OUTER RIO DE LA PLATA: SECTOR S 4 BACK SECTOR N VIS GOOD
URUGUAY SOUTH EAST COASTS: SECTOR N 4 PROB OF MIST DURING THE MORNING VIS GOOD
OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR W 4/5 WITH GUSTS VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/5 WITH GUSTS INCR 6 WITH
GUSTS BY 24/0300 WORSENING WITH PROB OF ISOL RAIN VIS GOOD TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 5/6 WITH GUSTS PROB OF ISOL
RAIN STARTING EARLY MORNING VIS GOOD TO MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 6/8 WITH GUSTS DECR 7/6 WITH
GUSTS BY 24/0600 PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 5/6 WITH GUSTS INCR 7 WITH GUSTS
BY 24/0000 PROB OF INTERMITTENT SH RAIN VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 6/7 WITH GUSTS PROB OF SH RAIN
SPELLS OF GOOD WEATHER VIS MODERATE
ISLAS MALVINAS COASTS: SECTOR N 6 WITH GUSTS BACK SECTOR S 7 WITH GUSTS BY
24/0600 PROB OF SH RAIN STARTING EVENING VIS MODERATE TO POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR N 6/5 WITH GUSTS PROB OF
INTERMITTENT SH RAIN VIS MODERATE
REST OF THE AREA: SECTOR W 7/6 WITH GUSTS DECR 5 WITH GUSTS PROB OF SH RAIN
IMPR DURING THE EVENING VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) W OF 30W: SECTOR N 6/8 WITH GUSTS PROB
OF SH RAIN VIS POOR
REST OF THE AREA: VRB 5 WITH GUSTS BACK SECTOR N 6 WITH GUSTS PROB OF DRIZZLE
DURING THE MORNING NEXT ISOL RAIN DURING THE NIGTH VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR N 8 WITH GUSTS VEER
SECTOR W WITH GUSTS DECR 7/6 WITH GUSTS BY 24/0900 PROB OF ISOL SH RAIN STORMS
SPELLS OF GOOD WEATHER VIS POOR
W OF 50 - S OF 45S: SECTOR W 8 WITH GUSTS DECR 7 WITH GUSTS PROB OF SH RAIN
SPELLS OF GOOD WEATHER VIS MODERATE
REST OF THE AREA: SECTOR W 6/5 WITH GUSTS PROB OF SH RAIN DURING THE MORNING
NEXT IMPR VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) S OF 55S: SECTOR N 7/6 WITH GUSTS PROB
OF ISOL RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE
REST OF THE AREA: SECTOR N 6/7 GUST WITH 8 INTENSITY PROB OF INTERMITTENT SH
RAIN VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR N 6 WITH GUSTS VEER
SECTOR W 7 WITH GUSTS PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL
MODERATE
REST OF THE AREA: SECTOR N 7/6 WITH GUSTS BACK VRB 5 PROB OF ISOL RAIN NXT PROB
OFISOL RAIN AND SNOW MIXTURE STARTING NIGTH VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 7/8 WITH GUSTS BACK SECTOR W 6 WITH
GUSTS BY 23/2100 PROB OF INTERMITTENT SH OF RAIN SH OF SNOW RAIN AND SNOW
MIXTURE VIS POOR OCNL MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 23, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
567/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV SE DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-63S 62W-50W UNTIL 23/2100
568/2026 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E WITH GUST IN 62S-64S 68W-58W UNTIL 24/1500
569/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 GUST WITH 10 INTENSITY IN 60S-66S 50W-30W UNTIL 23/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 960HPA 60S 70W MOV SE DPN
LOW 977HPA 67S 50W MOV SE DPN
LOW 969HPA 64S 81W MOV SE DPN
LOW 978HPA 68S 41W MOV SE DPN
231400 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 5839S 03606W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4652S 02859W 6X3NM ICEBERG2 4951S 02816W 5X3NM ICEBERG3 4659S 02857W 4X2NM ICEBERG4 4703S 02903W 3X1NM ICEBERG5 5752S 03615W 3X1NM ICEBERG6 4409S 03514W 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 2026-04-24
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 6/7 GUST WITH 8 INTENSITY VEER NE 5/6 BY 23/1800 PROB OF FOG AND MIST IN PATCHES PROB OFMOD RAIN SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 9 WITH GUSTS DECR SECTOR N 7 BY 23/1800 PROB OF MIST PROB OFMOD RAIN IMPR STARTING NIGTH VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: NW 6/7 GUST WITH 8 INTENSITY VEER NE 5/6 BY 23/1800 PROB OF FOG AND MIST IN PATCHES PROB OFMOD RAIN SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 9 WITH GUSTS DECR SECTOR N 7 BY 23/1800 PROB OF MIST PROB OFMOD RAIN IMPR STARTING NIGTH VIS POOR TO MODERATE
GERLACHE STRAIT : SECTOR E 8 GUST WITH 9 INTENSITY DECR SECTOR E 6/5 BY 23/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
MARGARITA BAY : SECTOR E 7/8 WITH GUSTS DECR SECTOR E 5/4 WITH GUSTS BY 24/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NIGTH VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 7/8 WITH GUSTS INCR SW 8 GUST WITH 9 INTENSITY BY 23/2100 PROB OF FOG AND MIST IN PATCHES BLIZZARD PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 4/5 VEER SECTOR W 5/6 BY 23/2100 PROB OF MIST PROB OFINTERMITTENT RAIN SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SE 3/4 VEER SECTOR S 4/5 BY 24/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 3/4 VEER SE 4 BY 23/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA N OF 65S: NW 9 WITH GUSTS VEER SECTOR N 8/7 WITH GUSTS BY 24/0000 AFTERWARDS SECTOR N 5 BY 24/0600 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO VERY POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR E 4/5 WITH GUSTS BACK NW 7 GUST WITH 8 INTENSITY BY 23/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): VRB 3 INCR SW 4/5 BY 24/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE=