METAREA 6 bulletinset


HIGH SEAS FORECAST NORTH 60S
WWST02 SABM 190000

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

00:00 UTC 19, SEPTEMBER 2026.

NATIONAL WEATHER SERVICE

SEA ICE AND ICEBERGS ISSUED BY SHN

PRESSURE HPA

BEAUFORT SCALE WINDS.

PART 1 GALE WARNING:

WARNING 426: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR N

WITH GUST BETWEEN 50S-55S AND 40W-55W

WARNING 427: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 FROM SECTOR

N WITH GUST BETWEEN 50S-60S 30W-40W FROM 19/1200

PART 2 GENERAL SYNOPSIS AT 21:00UTC

LOW 1014HPA 44S 27W MOV SE NC EXTENDS SECONDARY CFNT AT 40S 28W 38S 29W 35S

33W

CFNT AT SOUTH PATAGONIA COASTS MOV E

RIDGE 40S 44W 43S 43W 46S 42W MOV E

181400 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 5746S 04543W 28X25NM

D33B 5933S 04621W 21X12NM A76C 5431S 02631W 17X6NM 3.ICEBERGS SMALLER THAN 10NM

D32 5701S 03820W 9X6NM ICEBERG1 57181S 04733W 5X3NM ICEBERG2 5953S 05104W 5X3NM

ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5807S 04958W 3X1NM 4.ICEBERGS AREA A5535S

02000W 5000S 02000W 5000S 04000W 5800S 04000W B5800S 04000W 5300S 04000W 5300S

05000W 5900S 05000W C5900S 05000W 5500S 05000W 5900S 06716W 6100S 06716W

PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-20

COASTAL AREAS:

INNER RIO DE LA PLATA: N 3/4 VEER E BY 19/1500 VIS VERY POOR TO POOR

OUTER RIO DE LA PLATA: NE 4/4 WITH GUSTS VIS GOOD

URUGUAY SOUTH EAST COASTS: NE 4/3 WITH GUSTS VIS GOOD

MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 4/5 WITH GUSTS VIS GOOD

RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/5 VIS GOOD

PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 4 PROB OF SH TOWARDS THE END

OF THE PERIOD VIS GOOD TO POOR

GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5/4 WITH GUSTS VEER N 2/4 BY

19/1800 PROB OF ISOL RAIN STARTING EVENING VIS GOOD TO MODERATE

SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 4 VEER VRB 3 BY 19/1500 LOW PROB

OF ISOL RAIN IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD

FIN DEL MUNDO COASTS(54S - 55S): SW 5 WITH GUSTS PROB OF SH RAIN AND SNOW

MIXTURE VIS MODERATE

ISLAS MALVINAS COASTS: NW 6/5 WITH GUSTS BACK SECTOR W 4/3 BY 19/1500 PROB OF

ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE

OCEANIC AREAS:

NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 6/5 WITH GUSTS BACK SW 5 WITH

GUSTS BY 19/1200 PROB OF RAIN VIS POOR

NORTH AREA (35S- 40S AND 20W- 55W) W OF 30 - E OF 40W: SW 6/5 WITH GUSTS VEER W

4 BY 19/2100 PROB OF SH RAIN IMPR STARTING EVENING VIS POOR TO MODERATE

NORTH AREA (35S- 40S AND 20W- 55W) W OF 40 - E OF 50W: VRB 3 VEER SECTOR N 4 BY

19/1800 VIS GOOD

NORTH AREA (35S- 40S AND 20W- 55W) REST OF THE AREA: SECTOR N 4/5 WITH GUSTS VIS

GOOD

CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: NW 5 WITH GUSTS

BACK SW 4 BY 19/ PROB OF SH RAIN VIS GOOD OCNL POOR

CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - S OF 45S: SECTOR W 3/4 PROB

OF ISOL DRIZZLE VIS MODERATE

CENTRAL EAST AREA (40S- 50S AND 20W- 40W) W OF 30 - N OF 45S: SW 5 WITH GUSTS

VEER NW 5/6 WITH GUSTS BY 19/2100 PROB OF ISOL RAIN VIS MODERATE

CENTRAL EAST AREA (40S- 50S AND 20W- 40W) REST OF THE AREA: SECTOR W 4 VEER NW 6

WITH GUSTS BY 19/1200 PROB OF SH VIS MODERATE OCNL POOR

CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: VRB 5/6 GUST WITH 8

INTENSITY NW PROB OF RAIN NEXT IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE

OCNL POOR

CENTRAL WEST AREA (40S- 50S AND 40W- 60W) REST OF THE AREA: NW 6/5 WITH GUSTS

PROB OF ISOL RAIN IMPR STARTING EARLY MORNING VIS MODERATE

SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: NW 6/7 GUST WITH 8 INTENSITY

PROB OF SH OF SNOW VIS MODERATE TO POOR

SOUTH EAST AREA (50S- 60S AND 20W- 40W) REST OF THE AREA: NW 7/8 WITH GUSTS PROB

OF SNOW FALL VIS VERY POOR TO POOR

SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR N 7/8 WITH

GUSTS BACK SECTOR W 6 WITH GUSTS BY 19/1800 PROB OF RAIN SPELLS OF GOOD WEATHER

VIS VERY POOR TO POOR

SOUTH WEST AREA (50S- 60S AND 40W- 60W) W OF 50 - N OF 55S: SECTOR N 8 WITH

GUSTS BACK SECTOR W 5/4 BY 19/1200 PROB OF ISOL RAIN STARTING EARLY MORNING IMPR

GRADUALLY VIS POOR TO MODERATE

SOUTH WEST AREA (50S- 60S AND 40W- 60W) REST OF THE AREA: NW 7 GUST WITH 8

INTENSITY BACK 6 WITH GUSTS BY 19/1200 PROB OF RAIN SNOW FALL VIS POOR TO

MODERATE

DRAKE AREA (55S- 60S AND 60W- 67W): SW 5/6 WITH GUSTS PROB OF SH OF SNOW VIS

MODERATE OCNL POOR

-----------------------------------------------------------------

NNNN=


HIGH SEAS FORECAST SOUTH 60S
WWAA02 SAWB 181200

1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

12:00 UTC 18, SEPTEMBER 2026.

NATIONAL WEATHER SERVICE (NWS)

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

PART 1 GALE WARNING:

1163/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA

COASTS MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 60S-6

4S 62W-50W UNTIL 18/2100

1164/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WI

NDS FORCE 8 FROM SECTOR W WITH GUST IN 60S-65S 50W-30W UNTIL 19/0300

PART 2 GENERAL SYNOPSIS AT 09:00UTC

LOW 971HPA 67S 50W MOV E DPN

LOW 965HPA 64S 61W MOV E DPN

LOW 970HPA 70S 70W MOV E DPN

171400 UTC 1.SEA ICE LIMIT 5527S 02000W 5408S 02618W 5439S 03218W 5557S 03757W 5

658S 04316W 5914S 04813W 5921S 05247W 6157S 05654W 6223S 06033W 5937S 06337W 611

5S 06559W 6053S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5746S 04552W 28X25NM D33

B 5930S 04657W 21X12NM A76C 5429S 02632W 17X6NM 3.ICEBERGS SMALLER THAN 10NM D32

5738S 03819W 9X6NM ICEBERG1 5718S 04733W 5X3NM ICEBERG2 5953S 05104W 5X3NM ICEB

ERG3 5621S 05024W 4X3NM ICEBERG4 5807S 04958W 3X1NM 4.ICEBERGS AREA A5535S 02000

W 5000S 02000W 5000S 04000W 5800S 04000W B5800S 04000W 5300S 04000W 5300S 05000W

5900S 05000W C5900S 05000W 5500S 05000W 5900S 06716W 6100S 06716W

PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-19

COASTAL AREAS:

SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 5/6 WITH GUSTS BACK SECTOR W 5 WIT

H GUSTS BY 19/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEA

THER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE

SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 8 WITH GUSTS VEER NW

8/7 WITH GUSTS BY 18/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF

GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE

MAR DE LA FLOTA COASTS W OF 60W: NW 5/6 WITH GUSTS BACK SECTOR W 5 WITH GUSTS BY

19/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWAR

DS THE END OF THE PERIOD VIS POOR TO MODERATE

MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 8 WITH GUSTS VEER NW 8/7 WITH

GUSTS BY 18/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATH

ER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE

GERLACHE STRAIT : SECTOR W 4/5 BACK SW 4/3 BY 18/1800 PROB OF MIST PROB OFINTERM

ITTENT SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE

MARGARITA BAY : NW 4/5 WITH GUSTS VEER SECTOR N 4/3 BY 18/1800 PROB OF MIST PROB

OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POO

R TO MODERATE

EREBUS Y TERROR GULF : NW 4/5 BACK SW 5/6 WITH GUSTS BY 18/1800 PROB OF MIST VIS

GOOD TO MODERATE

OCEANIC AREAS:

NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 4/5 BACK SW 5/6 WITH GUSTS BY 18/1

800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS MODERATE TO G

OOD

NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 7/6 WITH GUSTS DECR SECTOR

W 5 WITH GUSTS BY 18/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR DURIN

G THE EVENING VIS VERY POOR TO MODERATE

SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 5/6 WITH GUSTS BACK SECTOR S 4/3

BY 18/1800 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

NORTHERN WEDDELL SEA N OF 64S: SECTOR W 8 WITH GUSTS VEER NW 5/6 WITH GUSTS BY 1

9/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEAT

HER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD

NORTHERN WEDDELL SEA REST OF THE AREA: SW 3/4 BACK SE 5/4 WITH GUSTS BY 18/1800

PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DUR

ING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD

SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 3/4 BACK SECTOR E 5/4 BY 18/1800 PROB O

F MIST VIS GOOD TO MODERATE=