METAREA 6 bulletinset


HIGH SEAS FORECAST NORTH 60S
WWST02 SABM 170000

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

2026-08-17, 00:00 UTC.

NATIONAL WEATHER SERVICE

SEA ICE AND ICEBERGS ISSUED BY SHN

PRESSURE HPA

BEAUFORT SCALE WINDS.

PART 1 GALE WARNING:

WARNING 381: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR N WITH

GUST BETWEEN 35S-45S 30W-50W FROM 17/0300

WARNING 379: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 WITH GUST IN DRAKE

AREA (55S- 60S AND 60W- 67W)

PART 2 GENERAL SYNOPSIS AT 21:00UTC

LOW 1005HPA 45S 54W DPN EXP 46S 47W BY 17/2100

HIGH 1033HPA 35S 35W MOV NE WKN EXP BY 17/2100 EXTENDS RIDGE41S 37W 44S 40W 47S

44W MOV NE

161400 UTC 1.SEA ICE LIMIT 5448S 02000W 6458S 06350W 6453S 06351W 6403S 06137W

6116S 05515W 6213S 05906W 6228S 06019W 6455S 06324W 6348S 06140W 6210S 05834W

6240S 06055W 6220S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6022S 05218W 21X12NM

A81 5904S 05105W 28X25NM A76C 5250S 03026W 16X6NM A83 6108S 05033W 12X7NM

3.ICEBERGS SMALLER THAN 10NM D33C 6140S 05419W 9X5NM ICEBERG1 6027S 05119W 5X3NM

ICEBERG2 6123S 05356W 5X3NM ICEBERG3 6121S 05301W 6X4NM 4.ICEBERGS AREA A5804S

02000W 4557S 02000W 5000S 03000W 5427S 02951W B5427S 02951W 5100S 03000W 5402S

04500W 5914S 04504W C5914S 04504W 5400S 04500W 5900S 05501W 6145S 05500W D6145S

05500W 6001S 05506W 6000S 06716W 6240S 06716W

PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-18

COASTAL AREAS:

INNER RIO DE LA PLATA: SE 4/5 WITH GUSTS PROB OF DRIZZLE RAIN STARTING EVENING

VIS GOOD TO MODERATE

OUTER RIO DE LA PLATA: SE 4/5 WITH GUSTS PROB OF DRIZZLE RAIN STARTING EVENING

VIS GOOD TO MODERATE OCNL POOR

URUGUAY SOUTH EAST COASTS: SECTOR S 4/5 WITH GUSTS PROB OF HVY RAIN ISOL STORMS

VIS MODERATE TO POOR

MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 4/5 WITH GUSTS PROB OF ISOL

DRIZZLE VIS MODERATE

RINCON BAHIA BLANCA COASTS(3830S - 41S): SW 5/4 PROB OF ISOL DRIZZLE TOWARDS

EVENING IMPR VIS MODERATE

PENINSULA DE VALDES COASTS(41S - 45S): SW 5/4 PROB OF ISOL DRIZZLE TOWARDS THE

END OF THE PERIOD IMPR VIS MODERATE

GOLFO DE SAN JORGE COASTS(45S - 48S): SW 5 VEER NW 4 BY 17/1800 PROB OF SH

TOWARDS EVENING IMPR VIS MODERATE

SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 4 VEER NW 5 BY 17/1200 VIS GOOD

FIN DEL MUNDO COASTS(54S - 55S): NW 6/7 GUST WITH 8 INTENSITY PROB OF ISOL

RAIN STARTING EVENING VIS MODERATE TO POOR

ISLAS MALVINAS COASTS: SE 3 VEER NW 5/6 BY 17/1500 UNSTABLE VIS MODERATE

OCEANIC AREAS:

NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SW 5 WITH GUSTS PROB OF DRIZZLE VIS

MODERATE OCNL POOR

W OF 30 - E OF 50W: SECTOR N 7/8 WITH GUSTS PROB OF HVY RAIN VIS POOR

REST OF THE AREA: SECTOR S 4/5 RAIN STARTING EVENING IMPR VIS MODERATE

CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR W 5/6 WITH GUSTS PROB

OF SH RAIN VIS POOR

W OF 30 - N OF 45S: SECTOR W 5 WITH GUSTS VEER SECTOR N 7/8 WITH GUSTS BY

17/1200 PROB OF RAIN VIS MODERATE TO VERY POOR

REST OF THE AREA: SECTOR W 6/5 WITH GUSTS VEER NE 4 WITH GUSTS BY 17/2100 PROB

OF DRIZZLE VIS MODERATE OCNL POOR

CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR N 7/8 WITH

GUSTS BACK SECTOR W 5 WITH GUSTS BY 17/1800 PROB OF ISOL RAIN STORMS VIS VERY

POOR TO MODERATE

E OF 50 - S OF 45S: NE 5/6 VEER E 5 BY 17/1800 PROB OF RAIN VIS POOR

W OF 50 - N OF 45S: SW 6/10 GUST WITH 8 INTENSITY PROB OF SH RAIN VIS MODERATE

TO POOR

REST OF THE AREA: SW 5/4 WITH GUSTS PROB OF SH RAIN VIS MODERATE

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

ISOL SNOW FALL VIS MODERATE

W OF 30 - REST OF THE AREA OF 55S REST OF THE AREA: SECTOR W 6/5 WITH GUSTS

PROB OF ISOL SNOW FALL VIS MODERATE

REST OF THE AREA: SECTOR W 6/7 GUST WITH 8 INTENSITY PROB OF SNOW FALL VIS

MODERATE TO POOR

SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: VRB 3 PROB OF DRIZZLE TOWARDS

EVENING IMPR VIS MODERATE TO GOOD

REST OF THE AREA: NW 6/10 GUST WITH 8 INTENSITY PROB OF RAIN SNOW FALL VIS

MODERATE TO POOR

DRAKE AREA (55S- 60S AND 60W- 67W): NE 7/8 WITH GUSTS PROB OF RAIN VIS POOR OCNL

VERY POOR

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HIGH SEAS FORECAST SOUTH 60S
WWAA02 SAWB 170000

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

00:00 UTC 17, AUGUST 2026.

NATIONAL WEATHER SERVICE (NWS)

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

PART 1 GALE WARNING:

1059/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-65S 50W-30W UNTIL 18/0300

1060/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-64S 60W-50W UNTIL 17/1500

1061/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR E WITH GUST IN 61S-64S 70W-58W FROM 17/2100 UNTIL 18/2100

1062/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR E WITH GUST IN 64S-66S 70W-64W FROM 17/0300 UNTIL 18/1200

1063/2026 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST IN 64S-66S 59W-50W FROM 17/0900 UNTIL 17/2100

PART 2 GENERAL SYNOPSIS AT 21:00UTC

LOW 971HPA 65S 72W MOV SE DPN EXTENDS CFNT AT 65S 72W 63S 68W 60S 69W MOV E

LOW 968HPA 63S 85W MOV E WKN

LOW 987HPA 68S 53W MOV E DPN

LOW 991HPA 63S 43W MOV E WKN

161400 UTC 1.SEA ICE LIMIT 5448S 02000W 6458S 06350W 6453S 06351W 6403S 06137W 6116S 05515W 6213S 05906W 6228S 06019W 6455S 06324W 6348S 06140W 6210S 05834W 6240S 06055W 6220S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6022S 05218W 21X12NM A81 5904S 05105W 28X25NM A76C 5250S 03026W 16X6NM A83 6108S 05033W 12X7NM 3.ICEBERGS SMALLER THAN 10NM D33C 6140S 05419W 9X5NM ICEBERG1 6027S 05119W 5X3NM ICEBERG2 6123S 05356W 5X3NM ICEBERG3 6121S 05301W 6X4NM 4.ICEBERGS AREA A5804S 02000W 4557S 02000W 5000S 03000W 5427S 02951W B5427S 02951W 5100S 03000W 5402S 04500W 5914S 04504W C5914S 04504W 5400S 04500W 5900S 05501W 6145S 05500W D6145S 05500W 6001S 05506W 6000S 06716W 6240S 06716W

PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-18

COASTAL AREAS:

SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 9 WITH GUSTS BACK SECTOR W 7/5 WITH GUSTS BY 17/0900 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

SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 5/7 WITH GUSTS INCR NW 9 WITH GUSTS BY 17/0600 AFTERWARDS SECTOR W 6/5 WITH GUSTS BY 17/1500 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR

MAR DE LA FLOTA COASTS W OF 60W: NW 9 WITH GUSTS BACK SECTOR W 7/5 WITH GUSTS BY 17/0900 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

MAR DE LA FLOTA COASTS REST OF THE AREA: NW 5/7 WITH GUSTS INCR NW 9 WITH GUSTS BY 17/0600 AFTERWARDS SECTOR W 5/5 WITH GUSTS BY 17/1500 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR

GERLACHE STRAIT : SECTOR E 7/8 WITH GUSTS VEER NE 5/7 GUST WITH 8 INTENSITY BY 17/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE

MARGARITA BAY : NE 4/5 VEER SECTOR E 4/3 BY 17/1200 PROB OF MIST VIS MODERATE TO GOOD

EREBUS Y TERROR GULF : NW 4/5 BACK SW 8 WITH GUSTS BY 17/0900 AFTERWARDS SW 5 BY 17/2100 PROB OF FOG AND MIST IN PATCHES BLIZZARD PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR

OCEANIC AREAS:

NORTHER BELLINGSHAUSEN SEA N OF 64S: NW 7/5 WITH GUSTS BACK SECTOR S 6/5 BY 17/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE

NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SE 5/6 VEER SECTOR S 5/4 BY 17/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD

SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR S 4/5 VEER SECTOR S 4 BY 17/1500 PROB OF FOG AND MIST IN PATCHES SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD

NORTHERN WEDDELL SEA N OF 64S: SECTOR W 5/6 WITH GUSTS VEER NW 9 WITH GUSTS BY 17/1200 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT BLIZZARD SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD

NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR E 3/4 BACK NE 4/5 BY 17/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING STARTING EARLY MORNING VIS MODERATE TO POOR

SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR N 6/5 WITH GUSTS VEER SECTOR E 5/4 BY 17/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD=