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1:31:06:01:00

SECURITE

WEATHER BULLETIN FOR SHIPPING - METAREA 6-

00:00 UTC 24, AUGUST 2025.

NATIONAL WEATHER SERVICE (NWS)

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

PART 1 STORM WARNING:

932/2025 STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 10 FROM SECTOR S WITH GUST IN 60S-68S 30W-50W FROM 24/1500

933/2025 STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 10 FROM SECTOR E WITH GUST IN 60S-65S 20W-30W FROM 24/0300

GALE WARNING:

929/2025 STRONG BARIC GRADIENT MOV SE PROVOKES WINDS FORCE 9 FROM NE IN 60S-73S 75W-90W UNTIL 25/0000

930/2025 LOW 959HPA AT 66S 90W MOV S PROVOKES WINDS FORCE 8 AROUND ITSELF IN 60S-70S 80W-90W UNTIL 24/0600

931/2025 STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SE WITH GUST IN 60S-63S 50W-60W

PART 2 GENERAL SYNOPSIS AT 21:00UTC

LOW 959HPA 66S 90W MOV S WKN EXTENDS CFNT AT 68S 90W 64S 80W 60S 78W MOV SE

TROUGH 60S 60W 70S 60W MOV E

OFNT AT 60S 48W 64S 30W MOV S

231400 UTC 1.SEA ICE LIMIT 5626S 02000W 5535S 02406W 5510S 02707W 5547S 03121W 5703S 03618W 5754S 04111W 5913S 04403W 5915S 04740W 6106S 05119W 6203S 05615W 6342S 06218W 6553S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5336S 03549W 40X32NM A74A 5725S 04548W 27X17NM A77 6031S 05552W 27X4NM A76C 5951S 04758W 16X7NM B15AB 6116S 05239W 11X4NM ICEBERG1 5319S 04026W 12X2NM 3.ICEBERGS SMALLER THAN 10NM A23D 5125S 03732W 8X4NM A23E 5201S 03341W 9X4NM A23F 5350S 03552W 9X4NM ICEBERG2 5338S 03616W 3X1NM ICEBERG3 5118S 03038W 3X3NM ICEBERG4 6021S 05207W 9X2NM ICEBERG5 5519S 04008W 4X2NM ICEBERG6 5216S 03735W 2X2NM ICEBERG7 4815S 02622W 3X2NM ICEBERG8 5307S 03308W 3X1NM ICEBERG9 5206S 03614W 3X1NM ICEBERG10 4720S 02639W 2X1NM ICEBERG11 5258S 03641W 4X1NM ICEBERG12 5112S 03638W 3X1NM ICEBERG13 5352S 03458W 3X1NM ICEBERG14 6025S 05410W 6X4NM ICEBERG15 5329S 03527W 4X1NM ICEBERG16 5218S 03502W 2X1NM ICEBERG17 5246S 03745W 3X2NM ICEBERG18 5346S 03532W 3X3NM ICEBERG19 6046S 05602W 2X1NM ICEBERG20 5331S 03519W 2X1NM 4.ICEBERGS AREA A: 5725S 02000W 4500S 02000W 4500S 03500W 5727S 03520W B: 5727S 03520W 4900S 03500W 5300S 05000W 6000S 04738W C: 6000S 04738W 5700S 04900W 6310S 06716W 6750S 06716W

PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-08-25

COASTAL AREAS:

SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NE 5/6 WITH GUSTS LOW PROB OF SLIGHT SNOW FALL VIS MODERATE OCNL POOR

SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR S 7/8 WITH GUSTS LOW PROB OF SLIGHT SNOW FALL VIS MODERATE OCNL POOR

MAR DE LA FLOTA COASTS W OF 60W: NE 5/6 WITH GUSTS LOW PROB OF SLIGHT SNOW FALL VIS MODERATE OCNL POOR

MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 9 WITH GUSTS LOW PROB OF SLIGHT SNOW FALL VIS MODERATE OCNL POOR

GERLACHE STRAIT : SECTOR E 4/3 VIS GOOD

MARGARITA BAY : NE 4/3 PROB OF MIST FOG PATCHES VIS GOOD OCNL POOR

EREBUS Y TERROR GULF : SW 8 WITH GUSTS DECR 6 WITH GUSTS BY 24/2300 VIS MODERATE

OCEANIC AREAS:

NORTHER BELLINGSHAUSEN SEA W OF 75 - N OF 65S: W 6 VEER N 6 BY 24/1800 PROB OF MIST TOWARDS THE END OF THE PERIOD PROB OFISOL SNOW FALL VIS MODERATE OCNL POOR

NORTHER BELLINGSHAUSEN SEA E OF 75 - N OF 65S: NE 7 WITH GUSTS BACK SECTOR W 4 BY 24/1200 PROB OF MIST PROB OFISOL SNOW FALL VIS MODERATE OCNL POOR

NORTHER BELLINGSHAUSEN SEA W OF 75 - S OF 65S: NE 8/9 WITH GUSTS BACK W 4 BY 24/0600 PROB OF MIST PROB OFISOL SNOW FALL VIS MODERATE OCNL POOR

NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NE 7/6 WITH GUSTS PROB OF MIST PROB OFISOL SNOW FALL VIS MODERATE OCNL POOR

SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): E 8/9 WITH GUSTS PROB OF MIST PROB OFISOL SNOW FALL VIS MODERATE OCNL POOR

NORTHERN WEDDELL SEA W OF 30 - N OF 65S: SE 5/6 WITH GUSTS VEER SECTOR S 8/9 WITH GUSTS BY 24/1500 PROB OF MIST PROB OF SNOW FALL VIS POOR

NORTHERN WEDDELL SEA W OF 30 - S OF 65S: SE 4/5 WITH GUSTS VEER S 6 WITH GUSTS BY 24/1500 PROB OF MIST PROB OF SNOW FALL VIS VERY POOR TO POOR

NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR E 8/9 WITH GUSTS PROB OF MIST PROB OF SNOW FALL VIS POOR

SOUTHERN WEDDELL SEA (68-78S 20-60W): VRB 4/3 VIS GOOD=