METAREA 6 bulletinset


HIGH SEAS FORECAST NORTH 60S
WWST02 SABM 171200

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

2026-04-17, 12:00 UTC.

NATIONAL WEATHER SERVICE

SEA ICE AND ICEBERGS ISSUED BY SHN

PRESSURE HPA

BEAUFORT SCALE WINDS.

PART 1 GALE WARNING:

WARNING 164: LOW 987HPA AT 55S 63W MOV SE DEEPENING WILL PROVOKE WINDS FORCE 8

FROM SECTOR W WITH GUST IN DRAKE AREA (55S- 60S AND 60W- 67W) BETWEEN 55S-60S

AND 40W-60W FROM 17/1800

WARNING 161: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR E WITH

GUST BETWEEN 40S-45S AND 20W-30W

PART 2 GENERAL SYNOPSIS AT 09:00UTC

LOW 1002HPA 36S 53W MOV E NC EXP 36S 50W BY 18/1200 EXTENDS OFNT AT 36S 50W 35S

57W 33S 55W

LOW 987HPA 55S 63W MOV SE DPN EXTENDS CFNT AT 55S 63W 47S 60W 39S 61W MOV E

HIGH 1031HPA 51S 26W MOV E INTSF EXP 50S 22W BY 18/1200

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 2026-04-18

COASTAL AREAS:

INNER RIO DE LA PLATA: SW 3 VEER W 3 PROB OF DRIZZLE TOWARDS MORNING VIS GOOD

OCNL MODERATE TO GOOD

OUTER RIO DE LA PLATA: SECTOR S 4 PROB OF ISOL RAIN TOWARDS EVENING IMPR VIS

GOOD OCNL MODERATE TO GOOD

URUGUAY SOUTH EAST COASTS: SECTOR S 4 WITH GUSTS PROB OF ISOL RAIN SPELLS OF

GOOD WEATHER VIS MODERATE

MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 4/6 PROB OF ISOL RAIN DURING THE

MORNING VIS GOOD OCNL MODERATE

RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/3 PROB OF ISOL RAIN VIS

GOOD OCNL MODERATE

PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 3 BACK SECTOR E 3/4 PROB OF

ISOL RAIN STARTING EVENING IMPR VIS GOOD OCNL MODERATE

GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 4 BACK SECTOR N 4/5 WITH GUSTS

VIS GOOD OCNL MODERATE

SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 4 BACK SECTOR N 5/6 WITH GUSTS VIS

GOOD OCNL MODERATE

FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 3/5 BACK SECTOR N 5/6 WITH GUSTS VIS

GOOD OCNL MODERATE

ISLAS MALVINAS COASTS: SECTOR N 4/5 WITH GUSTS TEMPO VEER SECTOR W 3/4 PROB OF

ISOL RAIN STARTING EARLY MORNING VIS MODERATE

OCEANIC AREAS:

NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 6/4 GUST WITH 8 INTENSITY PROB

OF ISOL RAIN STORMS VIS MODERATE OCNL POOR

E OF 40W: SECTOR S 4/5 WITH GUSTS PROB OF ISOL RAIN STORMS VIS MODERATE OCNL

POOR

REST OF THE AREA: SECTOR E 5/6 GUST WITH 8 INTENSITY PROB OF ISOL RAIN STORMS

VIS MODERATE OCNL POOR

CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45 - E OF 30W: SECTOR E 6/8 WITH

GUSTS PROB OF ISOL RAIN VIS POOR OCNL VERY POOR

REST OF THE AREA: SECTOR E 5/6 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE OCNL

POOR

CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: SECTOR N 4/5 WITH GUSTS VEER

SECTOR E 5 PROB OF ISOL RAIN STORMS VIS MODERATE OCNL POOR

REST OF THE AREA: SECTOR N 5/4 WITH GUSTS PROB OF ISOL SH RAIN VIS MODERATE

OCNL POOR

SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR W 4/5 WITH GUSTS VIS

GOOD OCNL MODERATE

REST OF THE AREA: SECTOR N 5/6 WITH GUSTS PROB OF ISOL RAIN STARTING EVENING

VIS MODERATE OCNL POOR

SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR N 6/4 WITH GUSTS PROB

OF RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR

E OF 50 - S OF 55S: SECTOR N 5/6 WITH GUSTS BACK SECTOR W 6/8 WITH GUSTS BY

18/0000 DECR 5 PROB OF RAIN VIS MODERATE TO POOR OCNL VERY POOR

REST OF THE AREA: SECTOR N 6 GUST WITH 8 INTENSITY VEER SECTOR W 8 WITH GUSTS

BY 17/1800 VEER SECTOR N 4/5 WITH GUSTS PROB OF RAIN TOWARDS EARLY MORNING IMPR

VIS POOR OCNL VERY POOR

DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 5 WITH GUSTS VEER SECTOR W 6/8 WITH

GUSTS DECR SECTOR N 5/6 WITH GUSTS PROB OF RAIN SPELLS OF GOOD WEATHER VIS POOR

OCNL VERY POOR

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HIGH SEAS FORECAST SOUTH 60S
WWAA02 SAWB 171200

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

12:00 UTC 17, APRIL 2026.

NATIONAL WEATHER SERVICE (NWS)

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

PART 1 GALE WARNING:

534/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 GUST WITH 9 INTENSITY IN 60S-67S 50W-30W UNTIL 17/1500

535/2026 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 59W-50W UNTIL 18/1800

536/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING WILL PROVOKE WINDS FORCE 9 FROM SECTOR N GUST WITH 10 INTENSITY IN 60S-65S 50W-40W FROM 18/0000 UNTIL 18/1800

PART 2 GENERAL SYNOPSIS AT 09:00UTC

LOW 969HPA 68S 80W MOV SE DPN

LOW 980HPA 62S 84W MOV E WKN

LOW 978HPA 72S 40W MOV SE DPN

RIDGE 70S 57W 65S 50W 60S 44W MOV E INTSF

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 2026-04-18

COASTAL AREAS:

SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 3/4 VEER NE 4/5 BY 18/0000 AFTERWARDS NE 6/7 WITH GUSTS BY 18/0600 PROB OF FOG AND MIST IN PATCHES IMPR TOWARDS NIGTH VIS VERY POOR TO MODERATE OCNL GOOD

SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NE 5/6 WITH GUSTS VEER SECTOR E 7 GUST WITH 8 INTENSITY BY 17/2100 PROB OF FOG MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR DURING THE EARLY MORNING VIS VERY POOR TO MODERATE

MAR DE LA FLOTA COASTS W OF 60W: NW 3/4 VEER NE 4/5 BY 18/0000 AFTERWARDS NE 6/7 WITH GUSTS BY 18/0600 PROB OF FOG AND MIST IN PATCHES IMPR TOWARDS NIGTH VIS VERY POOR TO MODERATE OCNL GOOD

MAR DE LA FLOTA COASTS REST OF THE AREA: NE 5/6 WITH GUSTS VEER SECTOR E 7 GUST WITH 8 INTENSITY BY 17/2100 PROB OF FOG MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR DURING THE EARLY MORNING VIS VERY POOR TO MODERATE

GERLACHE STRAIT : NE 4/5 WITH GUSTS VEER SECTOR E 3/4 BY 17/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD

MARGARITA BAY : NE 4/5 BACK SECTOR N 5/6 WITH GUSTS BY 17/1800 VIS GOOD

EREBUS Y TERROR GULF : SW 4/5 WITH GUSTS VEER NW 5 WITH GUSTS BY 18/0600 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD

OCEANIC AREAS:

NORTHER BELLINGSHAUSEN SEA N OF 65S: NW 4/5 BACK SW 4/4 WITH GUSTS BY 17/1800 PROB OF MIST PROB OFSCT SH SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD

NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR N 6/5 BACK SECTOR W 6/5 WITH GUSTS BY 17/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD

SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SE 4/5 VEER SECTOR S 4/3 BY 17/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE NIGTH VIS POOR TO MODERATE OCNL GOOD

NORTHERN WEDDELL SEA N OF 65S: NW 7 WITH GUSTS VEER SECTOR N 8 BY 18/0000 PROB OF FOG MIST PROB OFISOL RAIN AND SNOW MIXTURE IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE

NORTHERN WEDDELL SEA REST OF THE AREA: NW 5/7 WITH GUSTS BACK NE 4/3 BY 17/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING STARTING NIGTH VIS MODERATE TO VERY POOR

SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 7/8 WITH GUSTS DECR SE 6/5 WITH GUSTS BY 17/1800 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE=