421
WWST02 SABM 241200
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-08-24, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 350: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 35S-50S 40W-60W
WARNING 349: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 9 FROM SECTOR W
WITH GUST BETWEEN 40S-60S 20W-40W
WARNING 348: STRONG BARIC GRADIENT MOV NE WILL PROVOKE WINDS FORCE 8 FROM SW
WITH GUST IN SOUTH PATAGONIA COASTS FIN DEL MUNDO COASTS ISLAS MALVINAS COASTS
DRAKE AREA (55S- 60S AND 60W- 67W) FROM 24/1500 UNTIL 25/0600
WARNING 347: STRONG BARIC GRADIENT MOV NE PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST IN MAR DEL PLATA COASTS RINCON BAHIA BLANCA COASTS PENINSULA DE VALDES
COASTS GOLFO DE SAN JORGE COASTS UNTIL 25/0000
WARNING 345: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SW WITH
GUST BETWEEN 50S-60S AND 40W-50W UNTIL 25/0300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
CFNT AT 44S 65W 48S 62W 51S 61W 56S 68W MOV NE
LOW 946HPA 58S 36W MOV E WKN EXP 58S 20W BY 25/1200 EXTENDS CFNT AT 35S 34W 42S
27W 47S 25W 53S 24W MOV E
STRONG BARIC GRADIENT ON RINCON BAHIA BLANCA COASTS PENINSULA DE VALDES COASTS
GOLFO DE SAN JORGE COASTS
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 12:00 UTC VALID UNTIL 12:00 UTC 2025-08-25
COASTAL AREAS:
INNER RIO DE LA PLATA: NW 5/6 WITH GUSTS DECR BY 25/1200 VIS GOOD
OUTER RIO DE LA PLATA: NW 6/7 WITH GUSTS DECR BY 25/1200 VIS GOOD OCNL
MODERATE
URUGUAY SOUTH EAST COASTS: NW 5/7 WITH GUSTS DECR BY 25/1200 VIS GOOD OCNL
MODERATE
MAR DEL PLATA COASTS(36º17S - 38º30S): NW 6/8 WITH GUSTS DECR BY 25/0000 PROB OF
ISOL RAIN STARTING NIGTH VIS GOOD TO POOR
RINCON BAHIA BLANCA COASTS(38º30S - 41ºS): SECTOR W 8/4 WITH GUSTS DECR BY
24/2100 PROB OF ISOL RAIN IMPR TOWARDS NIGTH VIS POOR TO GOOD
PENINSULA DE VALDES COASTS(41ºS - 45ºS): SECTOR W 8/4 WITH GUSTS DECR BY 24/2100
PROB OF ISOL RAIN IMPR TOWARDS NIGTH VIS POOR TO GOOD
GOLFO DE SAN JORGE COASTS(45ºS - 48ºS): SW 8/6 WITH GUSTS BACK SECTOR W 4 WITH
GUSTS BY 24/2100 PROB OF ISOL RAIN IMPR DURING THE EVENING VIS MODERATE TO GOOD
OCNL POOR
SOUTH PATAGONIA COASTS(48ºS - 54ºS): SW 7/8 WITH GUSTS DECR BY 25/0300 PROB OF
RAIN IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE OCNL VERY POOR
FIN DEL MUNDO COASTS(54ºS - 55ºS): SW 7/8 WITH GUSTS DECR BY 25/0600 PROB OF
RAIN AND SNOW MIXTURE IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
OCNL VERY POOR
ISLAS MALVINAS COASTS: SECTOR N 4 WITH GUSTS BACK SW 8 WITH GUSTS BY 24/1500
DECR BY 25/0300 PROB OF RAIN AND SNOW MIXTURE IMPR TOWARDS THE END OF THE PERIOD
VIS POOR TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) W OF 40W: SECTOR W 7/8 WITH GUSTS PROB OF
ISOL SH RAIN VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR W 7 GUST WITH 8 INTENSITY PROB OF RAIN VIS POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR W 8/9 WITH GUSTS PROB OF RAIN
RAIN AND SNOW MIXTURE VIS VERY POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR W 8 WITH GUSTS PROB OF SH RAIN
VIS VERY POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 8/9 WITH GUSTS PROB OF RAIN
AND SNOW MIXTURE SNOW FALL VIS VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SW 8/6 WITH GUSTS PROB OF RAIN
AND SNOW MIXTURE SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO
MODERATE
REST OF THE AREA: SECTOR S 7/5 WITH GUSTS VEER SECTOR W BY 25/1200 PROB OF RAIN
AND SNOW MIXTURE SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO
MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR E 7 VEER SW 8 WITH GUSTS BY 24/1500
DECR BY 25/0600 PROB OF RAIN AND SNOW MIXTURE VIS VERY POOR TO POOR
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