METAREA 6 bulletinset


HIGH SEAS FORECAST NORTH 60S
WWST02 SABM 130000

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

2026-08-13, 00:00 UTC.

NATIONAL WEATHER SERVICE

SEA ICE AND ICEBERGS ISSUED BY SHN

PRESSURE HPA

BEAUFORT SCALE WINDS.

PART 1 GALE WARNING:

WARNING 377: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SW WITH

GUST BETWEEN 40S-45S 20W-50W

WARNING 376: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W

WITH GUST BETWEEN 35S-40S AND 20W-40W

PART 2 GENERAL SYNOPSIS AT 21:00UTC

HIGH 1029HPA 47S 64W MOV NE INTSF EXP 41S 54W BY 14/2100

LOW 984HPA 46S 33W MOV SE DPN EXTENDS CFNT AT 46S 33W 41S 36W 38S 45W MOV E

121400 UTC 1.SEA ICE LIMIT 5803S 02000W 5605S 02618W 5702S 03217W 5731S 03757W

5737S 04317W 5926S 04814W 6027S 05248W 6203S 05655W 6333S 06033W 6409S 06337W

6408S 06559W 6257S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6047S 05248W 21X12NM

A81 5911S 05114W 28X25NM A76C 5248S 03055W 16X6NM 3.ICEBERGS SMALLER THAN 10NM

D33C 6129S 05345W 9X5NM ICEBERG1 6132S 05303W 5X3NM ICEBERG2 6121S 05300W 5X3NM

ICEBERG3 6044S 05201W 6X4NM 4.ICEBERGS AREA A5820S 02000W 4600S 02000W 5300S

03800W 5805S 03800W B5805S 03800W 5300S 03800W 5800S 05000W 6040S 05000W C6040S

05000W 5800S 05000W 6300S 06716W 6620S 06716W

PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-14

COASTAL AREAS:

INNER RIO DE LA PLATA: SECTOR S 4 BACK SECTOR E BY 13/1200 PROB OF ISOL RAIN

STARTING EVENING VIS GOOD TO MODERATE

OUTER RIO DE LA PLATA: SECTOR S 4/5 WITH GUSTS BACK SECTOR E BY 13/1200 PROB OF

ISOL RAIN VIS GOOD TO MODERATE

URUGUAY SOUTH EAST COASTS: SECTOR S 4/5 WITH GUSTS BACK SECTOR E BY 13/1200 PROB

OF ISOL RAIN VIS GOOD TO MODERATE

MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 4/5 VEER SECTOR E 4 BY 13/1200

VIS GOOD

RINCON BAHIA BLANCA COASTS(3830S - 41S): SE 4 BACK NE 4/5 WITH GUSTS BY

13/1800 VIS GOOD

PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 4/5 WITH GUSTS VIS GOOD

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

SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 4/5 WITH GUSTS VIS GOOD.

FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 6/5 WITH GUSTS DECR 4 BY 13/1800 VIS

MODERATE TO GOOD

ISLAS MALVINAS COASTS: SECTOR W 5 WITH GUSTS VIS GOOD

OCEANIC AREAS:

NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR W 8 WITH GUSTS PROB OF RAIN

VIS VERY POOR

REST OF THE AREA: SECTOR S 7/5 WITH GUSTS BACK SECTOR E 5 BY 13/2100 VIS GOOD

OCNL MODERATE

CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SW 8 WITH GUSTS PROB OF RAIN

AND SNOW MIXTURE VIS VERY POOR TO POOR

REST OF THE AREA: SECTOR S 6 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS

MODERATE TO POOR

CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SW 8 DECR 7/6 WITH

GUSTS BY 13/1200 PROB OF RAIN AND SNOW MIXTURE VIS VERY POOR TO POOR

E OF 50 - S OF 45S: SW 7/6 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS POOR

REST OF THE AREA: SECTOR S 6/5 WITH GUSTS VEER SECTOR W 5 BY 13/1800 VIS GOOD

OCNL MODERATE

SOUTH EAST AREA (50S- 60S AND 20W- 40W): SW 6/5 WITH GUSTS LOW PROB OF RAIN AND

SNOW MIXTURE IMPR STARTING EVENING VIS MODERATE TO GOOD

SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR S 6 WITH GUSTS VEER SECTOR W BY

13/1200 PROB OF RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR

DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/5 WITH GUSTS LOW PROB OF RAIN AND

SNOW MIXTURE IMPR STARTING EVENING VIS MODERATE TO GOOD

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HIGH SEAS FORECAST SOUTH 60S
WWAA02 SAWB 121200

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

12:00 UTC 12, AUGUST 2026.

NATIONAL WEATHER SERVICE (NWS)

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

PART 1 GALE WARNING:

1048/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-65S 90W-75W UNTIL 12/1800

PART 2 GENERAL SYNOPSIS AT 09:00UTC

LOW 999HPA 66S 85W MOV SE DPN

LOW 1001HPA 64S 54W MOV E WKN

RIDGE 60S 68W 63S 68W 66S 67W MOV E INTSF

111400 UTC 1.SEA ICE LIMIT 5803S 02000W 5605S 02618W 5702S 03217W 5731S 03757W 5737S 04317W 5926S 04814W 6027S 05248W 6203S 05655W 6333S 06033W 6409S 06337W 6408S 06559W 6257S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6057S 05323W 21X12NM A81 5911S 05112W 28X25NM A76C 5248S 03049W 16X6NM 3.ICEBERGS SMALLER THAN 10NM D33C 6129S 05335W 9X5NM ICEBERG1 6130S 05248W 5X3NM ICEBERG2 6119S 05254W 5X3NM ICEBERG3 6044S 05201W 6X4NM 4.ICEBERGS AREA A5820S 02000W 4600S 02000W 5300S 03800W 5805S 03800W B5805S 03800W 5300S 03800W 5800S 05000W 6040S 05000W C6040S 05000W 5800S 05000W 6300S 06716W 6620S 06716W

PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-13

COASTAL AREAS:

SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 5/7 WITH GUSTS VEER SECTOR W 5/4 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE NOON VIS POOR TO MODERATE OCNL GOOD

SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR S 4/5 WITH GUSTS VEER SECTOR W 3/4 BY 12/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE NIGTH VIS MODERATE TO POOR

MAR DE LA FLOTA COASTS W OF 60W: SW 5/7 WITH GUSTS VEER SECTOR W 5/4 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE NOON VIS POOR TO MODERATE OCNL GOOD

MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 4/5 WITH GUSTS VEER SECTOR W 3/4 BY 12/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE NIGTH VIS MODERATE TO POOR

GERLACHE STRAIT : SW 4/3 VEER NE 4/3 BY 13/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE

MARGARITA BAY : SECTOR N 3/4 VEER NE 4/3 BY 12/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD

EREBUS Y TERROR GULF : SW 3/4 VEER SECTOR N 3/4 BY 13/0300 PROB OF FOG AND MIST IN PATCHES WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL VERY POOR

OCEANIC AREAS:

NORTHER BELLINGSHAUSEN SEA N OF 64S: NW 5/7 GUST WITH 8 INTENSITY BACK SECTOR W 6/5 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR TOWARDS NIGTH VIS POOR TO MODERATE

NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NE 4/5 VEER SECTOR E 4 WITH GUSTS BY 13/0000 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE

SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 3/4 VEER NE 4/5 BY 12/1800 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NOON VIS VERY POOR TO MODERATE

NORTHERN WEDDELL SEA N OF 64S: SW 7/5 WITH GUSTS VEER SECTOR W 6/5 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD

NORTHERN WEDDELL SEA REST OF THE AREA: SW 5/6 WITH GUSTS DECR SW 4 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD

SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 5/4 WITH GUSTS BACK SECTOR E 4 BY 12/2100 PROB OF MIST VIS MODERATE TO GOOD=