1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-16, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 158: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR N
WITH GUST IN ISLAS MALVINAS COASTS
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1026HPA 43S 41W MOV SE INTSF EXP 51S 27W BY 17/1200
LOW 1006HPA 31S 57W MOV SE DPN EXP 36S 53W BY 17/1200
161400 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 5920S 03602W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4640S 02749W 6X3NM ICEBERG2 4903S 03023W
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 2026-04-17
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 4/5 DRIZZLE RAIN VIS MODERATE TO GOOD
OUTER RIO DE LA PLATA: SECTOR E 5/6 WITH GUSTS VEER SECTOR S 5 BY 16/1800 BACK
SECTOR S 6/7 WITH GUSTS DRIZZLE RAIN VIS MODERATE TO POOR
URUGUAY SOUTH EAST COASTS: SECTOR W 5/6 WITH GUSTS TEMPO BACK SECTOR N 4/5 BY
16/1800 PROB OF DRIZZLE RAIN VIS MODERATE TO POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR W 5/6 PROB OF DRIZZLE RAIN VIS
MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/5 PROB OF DRIZZLE RAIN VIS
MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 4/5 PROB OF DRIZZLE RAIN VIS
MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 6/7 WITH GUSTS BACK SECTOR W
4/5 BY 17/0900 VIS POOR OCNL VERY POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 6/7 GUST WITH 8 INTENSITY BACK
SECTOR W 4/5 BY 17/0900 PROB OF ISOL RAIN VIS POOR OCNL VERY POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 6/7 GUST WITH 8 INTENSITY BACK
SECTOR W 4/5 BY 17/0300 PROB OF RAIN VIS POOR OCNL VERY POOR
ISLAS MALVINAS COASTS: SECTOR N 8 WITH GUSTS DECR 6/7 WITH GUSTS BY 16/2100 VIS
VERY POOR TO POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR E 6/7 GUST WITH 8 INTENSITY
PROB OF SH RAIN VIS POOR OCNL VERY POOR
E OF 45 - W OF 30W: SECTOR S 4/5 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE
REST OF THE AREA: SECTOR E 4/5 WITH GUSTS INCR 6/7 WITH GUSTS BY 17/0000 PROB
OF SH RAIN VIS MODERATE TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR E 4/5 PROB OF ISOL RAIN VIS
MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR N 4/5 PROB OF ISOL SH RAIN VIS
MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 6/7 GUST WITH 8 INTENSITY DECR
4/5 BY 17/0000 VIS POOR OCNL VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR N 6/7 GUST WITH 8 INTENSITY DECR
5/6 WITH GUSTS BY 17/0600 PROB OF ISOL SH RAIN VIS POOR OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 6/7 WITH GUSTS VEER SECTOR W 5/4 BY
17/0600 PROB OF ISOL RAIN VIS POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 16, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
529/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 GUST WITH 9 INTENSITY IN 62S-64S 80W-70W UNTIL 16/1800
530/2026 STRONG BARIC GRADIENT MARGARITA BAY MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E GUST WITH 9 INTENSITY IN 66S-69S 70W-65W UNTIL 16/1800
531/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 GUST WITH 9 INTENSITY IN 60S-67S 50W-43W UNTIL 17/1800
532/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV SE DEEPENING PROVOKES WINDS FORCE 8 GUST WITH 10 INTENSITY IN 60S-66S 65W-50W UNTIL 17/0300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 952HPA 67S 72W MOV SE DPN
RIDGE 60S 40W 65S 40W 69S 40W MOV E INTSF
151400 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 5920S 03602W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5025S 03003W 2X1NM ICEBERG2 4640S 02749W 6X3NM ICEBERG3 4928S 03034W 5X3NM ICEBERG4 4657S 02747W 4X2NM ICEBERG5 4656S 02738W 3X1NM ICEBERG6 5825S 03611W 3X1NM ICEBERG7 4313S 03411W 2X1NM 4.ICEBERGS AREA A6853S 02000W 4447S 02000W 4257S 03200W 6025S 03445W B6025S 03445W 4245S 03220W 4246S 03500W 5655S 04500W 6150S 04300W C6150S 04300W 5700S 04500W 6235S 06716W 6712S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-17
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 8 GUST WITH 9 INTENSITY DECR NW 6/5 WITH GUSTS BY 16/1800 AFTERWARDS SECTOR W 4 BY 17/0900 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR STARTING EVENING VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR N 9 WITH GUSTS BACK NW 7/5 WITH GUSTS BY 16/2100 PROB OF FOG MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: NW 8 GUST WITH 9 INTENSITY DECR NW 6/5 WITH GUSTS BY 16/1800 AFTERWARDS SECTOR W 4 BY 17/0900 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR STARTING EVENING VIS VERY POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR N 9 WITH GUSTS BACK NW 7/5 WITH GUSTS BY 16/2100 PROB OF FOG MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
GERLACHE STRAIT : NE 4/5 WITH GUSTS PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS MODERATE TO GOOD
MARGARITA BAY : SECTOR E 7/9 GUST WITH 9 INTENSITY DECR SECTOR E 7/6 WITH GUSTS BY 16/2100 PROB OF MIST BLIZZARD PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
EREBUS Y TERROR GULF : NW 7/9 WITH GUSTS DECR SW 5/4 WITH GUSTS BY 17/0000 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA W OF 80W: NW 6/5 WITH GUSTS BACK SW 5/4 WITH GUSTS BY 17/0000 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NW 7/8 GUST WITH 9 INTENSITY DECR NW 6/5 WITH GUSTS BY 16/1800 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SE 5/4 VEER SECTOR S 4/5 BY 16/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR DURING THE NIGTH VIS POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 66S: NW 9 WITH GUSTS INCR NW 10 WITH GUSTS BY 16/2100 PROB OF FOG MIST PROB OFISOL RAIN AND SNOW MIXTURE WORSENING DURING THE NIGTH VIS MODERATE TO VERY POOR
NORTHERN WEDDELL SEA REST OF THE AREA: NE 5/6 BACK SECTOR N 7 GUST WITH 8 INTENSITY BY 16/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 7/8 WITH GUSTS BACK SE 6/5 WITH GUSTS BY 16/2100 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE=