METAREA 6 bulletinset


HIGH SEAS FORECAST SOUTH 60S
WWAA02 SAWB 220000

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

00:00 UTC 22, SEPTEMBER 2026.

NATIONAL WEATHER SERVICE (NWS)

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

PART 1 GALE WARNING:

1167/2026 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 22/0900

1168/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 60S-67S 90W-70W UNTIL 22/1800

PART 2 GENERAL SYNOPSIS AT 21:00UTC

LOW 974HPA 66S 50W MOV E DPN

LOW 971HPA 68S 55W MOV E DPN

RIDGE 60S 78W 64S 75W 68S 72W MOV E WKN

LOW 974HPA 67S 90W MOV E DPN

RIDGE 60S 33W 65S 35W 70S 35W MOV E WKN

211400 UTC 1.SEA ICE LIMIT 5529S 02000W 5408S 02617W 5336S 03217W 5536S 03757W 5710S 04316W 5821S 04813W 5954S 05248W 6232S 05655W 6252S 06033W 6358S 06336W 6017S 06558W 6051S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5728S 04510W 28X25NM D33B 5926S 04516W 21X12NM A76C 5431S 02624W 17X6NM A85 6100S 05345W 10X3NM ICEBERG1 6058S 05312W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5742S 03818W 9X6NM D33C 6147S 05420W 9X5NM ICEBERG2 5648S 04555W 5X3NM ICEBERG3 5855S 05053W 5X3NM ICEBERG4 5752S 04906W 4X3NM ICEBERG5 5808S 04804W 3X1NM ICEBERG6 6112S 05336W 3X2NM 4.ICEBERGS AREA A5600S 02000W 5000S 02000W 5900S 04800W 5300S 04800W 5000S 04000W B5900S 06200W 6500S 06500W 5900S 04800W 5300S 04800W

PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-23

COASTAL AREAS:

SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 5/6 GUST WITH 8 INTENSITY VEER NW 7 WITH GUSTS BY 22/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE

SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 8 WITH GUSTS BACK SECTOR W 7 WITH GUSTS BY 22/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS POOR TO MODERATE

MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 5/6 GUST WITH 8 INTENSITY VEER NW 7 WITH GUSTS BY 22/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE

MAR DE LA FLOTA COASTS REST OF THE AREA: NW 8 WITH GUSTS BACK SECTOR W 7 WITH GUSTS BY 22/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS POOR TO MODERATE

GERLACHE STRAIT : SECTOR W 5/4 VEER NE 4 BY 22/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE OCNL GOOD

MARGARITA BAY : NW 4/3 VEER SECTOR N 3/4 BY 22/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EVENING VIS POOR TO MODERATE OCNL GOOD

EREBUS Y TERROR GULF : SW 5/6 BACK SE 5/4 BY 22/1500 PROB OF FOG AND MIST IN PATCHES WORSENING TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE OCNL VERY POOR

OCEANIC AREAS:

NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 6/7 WITH GUSTS INCR SECTOR W 8 WITH GUSTS BY 22/0600 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE OCNL GOOD

NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 5/6 GUST WITH 8 INTENSITY BACK SECTOR S 5/4 BY 22/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE

SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 3/4 BACK SECTOR S 4/3 BY 22/0600 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR STARTING EVENING VIS VERY POOR TO MODERATE OCNL GOOD

NORTHERN WEDDELL SEA N OF 64S: NW 7 WITH GUSTS BACK SECTOR W 5/5 BY 22/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD

NORTHERN WEDDELL SEA REST OF THE AREA: NE 4/5 VEER SECTOR E 7 BY 22/0900 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

SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 3/4 BACK SECTOR E 3/4 BY 22/1200 PROB OF MIST VIS GOOD TO MODERATE=


HIGH SEAS FORECAST NORTH 60S
WWST02 SABM 211200

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

2026-09-21, 12:00 UTC.

NATIONAL WEATHER SERVICE

SEA ICE AND ICEBERGS ISSUED BY SHN

PRESSURE HPA

BEAUFORT SCALE WINDS.

PART 1 GALE WARNING:

WARNING 431: LOW 984HPA AT 45S 52W MOV E DEEPENING EXPECTED 48S 40W BY 22/1200

WILL PROVOKE WINDS FORCE 8 FROM SECTOR E BETWEEN 50S-55S 20W-50W FROM 21/1800

WARNING 430: LOW 984HPA AT 45S 52W MOV E DEEPENING EXPECTED 48S 40W BY 22/1200

PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN OUTER RIO DE LA PLATA URUGUAY SOUTH

EAST COASTS MAR DEL PLATA COASTS RINCON BAHIA BLANCA COASTS BETWEEN 35S-40S AND

40W-60W

WARNING 429: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR N

WITH GUST BETWEEN 35S-45S AND 20W-50W

WARNING 428: LOW 984HPA AT 45S 52W MOV E DEEPENING EXPECTED 48S 40W BY 22/1200

PROVOKES WINDS FORCE 9 FROM SECTOR S WITH GUST IN PENINSULA DE VALDES COASTS

CENTRAL WEST AREA (40S- 50S AND 40W- 60W)

PART 2 GENERAL SYNOPSIS AT 09:00UTC

201400 UTC 1.SEA ICE LIMIT 5529S 02000W 5408S 02617W 5336S 03217W 5536S 03757W

5710S 04316W 5821S 04813W 5954S 05248W 6232S 05655W 6252S 06033W 6358S 06336W

6017S 06558W 6051S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5732S 04518W 28X25NM

D33B 5927S 04527W 21X12NM A76C 5430S 02626W 17X6NM A85 6110S 05345W 10X3NM

3.ICEBERGS SMALLER THAN 10NM D32 5737S 03815W 9X6NM D33C 6136S 05358W 9X5NM

ICEBERG1 5654S 04624W 5X3NM ICEBERG2 5910S 05042W 5X3NM ICEBERG3 5759S 04930W

4X3NM ICEBERG4 5820S 04807W 3X1NM ICEBERG5 6102S 05315W 10X3NM 4.ICEBERGS AREA

A5600S 02000W 5000S 02000W 5900S 04800W 5300S 04800W 5000S 04000W B5900S 06200W

6500S 06500W 5900S 04800W 5300S 04800W

LOW 981HPA 58S 23W MOV E EXTENDS CFNT AT 58S 23W 54S 22W 50S 40W MOV E

LOW 984HPA 45S 52W MOV E DPN EXP 48S 40W BY 22/1200 EXTENDS CFNT AT 45S 52W 35S

49W MOV E ASOCIATED WITH WFNT AT 45S 52W 47S 48W 50S 40W

PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-22

COASTAL AREAS:

INNER RIO DE LA PLATA: SW 6/7 GUST WITH 8 INTENSITY VIS MODERATE

OUTER RIO DE LA PLATA: SW 7/8 GUST WITH 8 INTENSITY PROB OF ISOL SH VIS MODERATE

OCNL POOR

URUGUAY SOUTH EAST COASTS: SW 6/7 GUST WITH 8 INTENSITY INCR 7/8 WITH GUSTS BY

21/2100 PROB OF ISOL SH STARTING NIGTH VIS MODERATE OCNL POOR

MAR DEL PLATA COASTS(3617S - 3830S): SW 7/8 WITH GUSTS DECR 7/6 WITH GUSTS BY

22/0300 PROB OF ISOL SH IMPR TOWARDS NIGTH VIS POOR TO GOOD

RINCON BAHIA BLANCA COASTS(3830S - 41S): SW 8 WITH GUSTS DECR 7/5 WITH GUSTS

BY 21/2100 PROB OF ISOL SH IMPR TOWARDS EVENING VIS POOR TO GOOD

PENINSULA DE VALDES COASTS(41S - 45S): S 8 WITH GUSTS DECR 7/6 WITH GUSTS BY

21/2100 PROB OF ISOL SH IMPR TOWARDS MORNING VIS POOR TO GOOD

GOLFO DE SAN JORGE COASTS(45S - 48S): S 7/6 GUST WITH 8 INTENSITY DECR 6/5

WITH GUSTS BY 22/0000 VEER W 4 BY 22/0600 VIS MODERATE TO GOOD

SOUTH PATAGONIA COASTS(48S - 54S): S 6/5 WITH GUSTS VEER W 4 BY 22/0300 VIS

MODERATE TO GOOD

FIN DEL MUNDO COASTS(54S - 55S): S 5 VEER SECTOR W BY 21/2100 VIS MODERATE TO

GOOD

ISLAS MALVINAS COASTS: S 6/5 WITH GUSTS VIS MODERATE TO GOOD

OCEANIC AREAS:

NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: N 8 WITH GUSTS PROB OF HVY STORMS

VIS VERY POOR TO POOR

REST OF THE AREA: W 7 WITH GUSTS INCR 8 WITH GUSTS BY 21/1800 BACK SW BY

22/0000 PROB OF SH STARTING NIGTH VIS MODERATE OCNL POOR

CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SW 6/7 GUST WITH 8 INTENSITY

INCR 8 WITH GUSTS BY 22/0000 PROB OF HVY RAIN VIS MODERATE TO VERY POOR

REST OF THE AREA: NW 8 WITH GUSTS PROB OF RAIN VIS POOR OCNL VERY POOR

CENTRAL WEST AREA (40S- 50S AND 40W- 60W): NE 6/7 GUST WITH 8 INTENSITY VEER

SECTOR S 8 WITH GUSTS BY 22/0000 PROB OF HVY RAIN VIS VERY POOR

SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR S 6/5 WITH GUSTS BACK E

8 BY 21/2100 PROB OF SNOW FALL VIS VERY POOR

REST OF THE AREA: SW 6/5 WITH GUSTS VEER NW WITH GUSTS BY 22/0300 VIS

MODERATE

SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55S: SECTOR W 6/7 WITH GUSTS PROB

OF ISOL SNOW FALL STARTING EARLY MORNING VIS MODERATE OCNL POOR

E OF 30 - N OF 55S: SE 7 WITH GUSTS INCR 8 WITH GUSTS BY 21/1800 LOW PROB OF

ISOL SNOW FALL VIS MODERATE OCNL POOR

REST OF THE AREA: SECTOR S 7/6 WITH GUSTS VIS MODERATE

DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/7 WITH GUSTS PROB OF ISOL SNOW

FALL STARTING NIGTH VIS MODERATE OCNL POOR

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