METAREA 6 bulletinset


HIGH SEAS FORECAST NORTH 60S
WWST02 SABM 311200

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

2026-07-31, 12:00 UTC.

NATIONAL WEATHER SERVICE

SEA ICE AND ICEBERGS ISSUED BY SHN

PRESSURE HPA

BEAUFORT SCALE WINDS.

PART 1 GALE WARNING:

WARNING 356: STRONG BARIC GRADIENT ON MOV E WILL PROVOKE WINDS FORCE 8 FROM

SECTOR W WITH GUST BETWEEN 40S-50S 20W-40W FROM 01/0000

WARNING 355: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 FROM NE WITH

GUST IN URUGUAY SOUTH EAST COASTS MAR DEL PLATA COASTS FROM 31/1800 UNTIL

01/0600

WARNING 354: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W

WITH GUST BETWEEN 50S-60S 20W-40W

WARNING 353: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 FROM SECTOR

N WITH GUST BETWEEN 35S-45S AND 40W-60W FROM 31/1800

PART 2 GENERAL SYNOPSIS AT 09:00UTC

LOW 998HPA 47S 65W MOV NE DPN EXP 44S 48W BY 01/1200 EXTENDS CFNT AT 42S 66W 45S

63W 47S 63W MOV NE

STRONG BARIC GRADIENT URUGUAY SOUTH EAST COASTS MAR DEL PLATA COASTS MOV E

HIGH 1028HPA 38S 43W MOV NE EXP 35S 30W BY 01/1200

CFNT AT 52S 34W 55S 29W 60S 29W MOV E

301400 UTC 1.SEA ICE LIMIT 5755S 02000W 5553S 02618W 5742S 03217W 5752S 03757W

5825S 04317W 5950S 04814W 6123S 05248W 6201S 05654W 6323S 06032W 6404S 06337W

6525S 06559W 6330S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 60 19S 052 34W

21X12NM A81 61 02S 051 58W 28X25NM A76C 52 27S 031 04W 16X6NM 3.ICEBERGS SMALLER

THAN 10NM ICEBERG1 5934S 05053W 2X1NM 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 2026-8-1

COASTAL AREAS:

INNER RIO DE LA PLATA: SECTOR N 4 WITH GUSTS BACK SW BY 1/0000 PROB OF STORMS

TOWARDS THE END OF THE PERIOD IMPR VIS MODERATE TO POOR

OUTER RIO DE LA PLATA: SECTOR N 5 WITH GUSTS BACK SECTOR S 4 WITH GUSTS BY

1/0000 PROB OF STORMS TOWARDS THE END OF THE PERIOD IMPR VIS MODERATE TO POOR

URUGUAY SOUTH EAST COASTS: NE 7/8 WITH GUSTS DECR BY 1/0600 PROB OF STORMS

DURING THE EVENING VIS MODERATE TO VERY POOR

MAR DEL PLATA COASTS(3617S - 3830S): NE 6/8 WITH GUSTS BACK SW 5 WITH GUSTS BY

31/2100 PROB OF STORMS TOWARDS EVENING VIS GOOD TO VERY POOR

RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 6/4 WITH GUSTS BACK SW 6

WITH GUSTS BY 31/2100 PROB OF STORMS TOWARDS THE END OF THE PERIOD IMPR VIS

MODERATE TO POOR

PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 7/5 WITH GUSTS BACK SW BY

31/1500 PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD

GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 5/6 WITH GUSTS DECR BY 1/0000

PROB OF ISOL RAIN VIS MODERATE TO POOR OCNL GOOD

SOUTH PATAGONIA COASTS(48S - 54S) N OF 50S: SECTOR E 7/5 WITH GUSTS PROB OF

RAIN SNOW FALL VIS POOR OCNL MODERATE

SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SECTOR E 5/6 WITH GUSTS

DECR BY 1/0600 PROB OF RAIN SNOW FALL VIS POOR OCNL MODERATE

FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 5 WITH GUSTS BACK SECTOR E 4 WITH

GUSTS BY 31/2100 PROB OF ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE OCNL

GOOD

ISLAS MALVINAS COASTS: SECTOR S 4/6 WITH GUSTS BACK SECTOR E 4 WITH GUSTS BY

1/0300 PROB OF ISOL RAIN SNOW FALL VIS MODERATE OCNL POOR

OCEANIC AREAS:

NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR S 7 WITH GUSTS BACK SECTOR N

6 WITH GUSTS BY 31/2100 PROB OF RAIN TOWARDS NIGTH IMPR VIS POOR TO GOOD

REST OF THE AREA: SECTOR N 6/8 WITH GUSTS PROB OF STORMS TOWARDS EVENING VIS

MODERATE TO VERY POOR

CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR W 6/8 WITH GUSTS PROB OF RAIN

AND SNOW MIXTURE SNOW FALL VIS MODERATE TO VERY POOR

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

OF RAIN STORMS VIS VERY POOR TO POOR

REST OF THE AREA: SECTOR N 6/7 WITH GUSTS BACK SECTOR E BY 31/1800 PROB OF RAIN

RAIN AND SNOW MIXTURE VIS POOR

SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 8 WITH GUSTS PROB OF RAIN AND

SNOW MIXTURE SNOW FALL VIS VERY POOR

SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR W 7 WITH GUSTS BACK

SECTOR S 6 WITH GUSTS BY 31/1800 PROB OF SNOW FALL VIS POOR

REST OF THE AREA: SECTOR S 7/6 WITH GUSTS PROB OF SNOW FALL SPELLS OF GOOD

WEATHER VIS POOR OCNL MODERATE

DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 5/4 WITH GUSTS BACK SECTOR E BY

1/2100 PROB OF ISOL SNOW FALL TOWARDS EVENING IMPR VIS MODERATE TO GOOD

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HIGH SEAS FORECAST SOUTH 60S
WWAA02 SAWB 311200

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

12:00 UTC 31, JULY 2026.

NATIONAL WEATHER SERVICE (NWS)

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

PART 1 GALE WARNING:

1028/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR S WITH GUST IN 60S-66S 58W-30W UNTIL 01/1500

PART 2 GENERAL SYNOPSIS AT 09:00UTC

LOW 973HPA 62S 38W MOV E WKN

LOW 974HPA 64S 41W MOV SE DPN

HIGH 1024HPA 62S 85W MOV E INTSF EXTENDS RIDGE AT 62S 85W 65S 80W 68S 73W MOV E

HIGH 1011HPA 64S 55W MOV E INTSF

301400 UTC 1.SEA ICE LIMIT 5755S 02000W 5553S 02618W 5742S 03217W 5752S 03757W 5825S 04317W 5950S 04814W 6123S 05248W 6201S 05654W 6323S 06032W 6404S 06337W 6525S 06559W 6330S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 60 19S 052 34W 21X12NM A81 61 02S 051 58W 28X25NM A76C 52 27S 031 04W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5934S 05053W 2X1NM 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 2026-8-1

COASTAL AREAS:

SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 6/5 WITH GUSTS VEER SECTOR W 5/3 WITH GUSTS BY 1/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE

SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR S 6/5 WITH GUSTS VEER SECTOR W 5 BY 1/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE

MAR DE LA FLOTA COASTS W OF 60W: SW 6/5 WITH GUSTS VEER 5/4 WITH GUSTS BY 1/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE

MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR E 5/5 WITH GUSTS VEER SECTOR W 5 WITH GUSTS BY 31/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE

GERLACHE STRAIT : SW 4/5 BACK SECTOR S 4 BY 1/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR

MARGARITA BAY : NE 3/4 BACK SECTOR N 4 BY 31/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR

EREBUS Y TERROR GULF : SECTOR S 5/4 VEER SW 5/6 BY 31/2100 PROB OF FOG AND MIST IN PATCHES WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL VERY POOR

OCEANIC AREAS:

NORTHER BELLINGSHAUSEN SEA N OF 65S: SECTOR W 2/4 VEER NW 4/3 BY 31/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NIGTH VIS MODERATE TO GOOD

NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 5/4 WITH GUSTS VEER NW 4/5 WITH GUSTS BY 31/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NIGTH VIS MODERATE TO GOOD

SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 4/5 VEER NW 4/5 BY 31/1800 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE

NORTHERN WEDDELL SEA N OF 65S: SECTOR S 7/8 WITH GUSTS VEER SW 5/4 BY 1/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD

NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR S 5/7 WITH GUSTS VEER SW 4 BY 1/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD

SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 4/5 VEER SECTOR E 4/3 BY 31/1200 PROB OF MIST VIS MODERATE TO GOOD=