1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-24, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 436: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM NW WITH GUST
BETWEEN 40S-50S 30W-40W FROM 24/1200
WARNING 435: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR N WITH
GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W) FROM 24/0900
PART 2 GENERAL SYNOPSIS AT 21:00UTC
231400 UTC 1.SEA ICE LIMIT 5534S 02000W 5352S 02618W 5434S 03217W 5642S 03758W
5716S 04316W 5835S 04813W 6034S 05247W 5853S 05655W 5837S 06033W 5902S 06337W
5941S 06559W 6030S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5705S 04438W 28X25NM
D33B 5922S 04518W 21X12NM A76C 5427S 02626W 17X6NM A85 6045S 05251W 10X3NM
ICEBERG1 6051S 05243W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5740S 03856W 9X6NM
D33C 6151S 05432W 9X5NM ICEBERG2 5634S 04517W 5X3NM ICEBERG3 5835S 04955W 5X3NM
ICEBERG4 5728S 04849W 4X3NM ICEBERG5 5758S 04755W 3X1NM ICEBERG6 6101S 05327W
3X2NM 4.ICEBERGS AREA A5609S 02000W 5000S 02000W 5300S 02600W 5438S 02600W
B5438S 02600W 5200S 02600W 5000S 03300W 5300S 04300W 5730S 04300W C5730S 04300W
5400S 04300W 5400S 04700W 6117S 06716W 6700S 06716W
LOW 981HPA 52S 56W MOV SE WKN EXTENDS CFNT AT 52S 54W 45S 52W 40S 60W MOV E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-25
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 5/4 WITH GUSTS VIS GOOD
OUTER RIO DE LA PLATA: SECTOR N 6/5 WITH GUSTS VIS GOOD
URUGUAY SOUTH EAST COASTS: SECTOR N 5 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): NW 6/5 GUST WITH 8 INTENSITY PROB OF SH
STARTING EARLY MORNING IMPR VIS VERY POOR TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): NW 6/5 GUST WITH 8 INTENSITY PROB OF
SH VIS MODERATE OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): NW 5/6 WITH GUSTS BACK VRB 5/4 BY
24/1500 PROB OF RAIN NXT SH VIS MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): VRB 5/4 PROB OF RAIN VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 6/5 BACK VRB 5 BY 24/1200 PROB OF
SH STARTING EARLY MORNING IMPR VIS MODERATE TO GOOD
FIN DEL MUNDO COASTS(54S - 55S): SW 5 VEER SECTOR W 5/6 WITH GUSTS BY 24/1200
PROB OF SH OF RAIN SH OF SNOW STARTING EARLY MORNING IMPR VIS MODERATE OCNL
POOR
ISLAS MALVINAS COASTS: SW 5/4 PROB OF SH OF RAIN SH OF SNOW STARTING EARLY
MORNING IMPR VIS MODERATE TO GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR W 5 PROB OF ISOL RAIN
STARTING EARLY MORNING IMPR VIS MODERATE TO GOOD
REST OF THE AREA: NW 6/7 WITH GUSTS PROB OF ISOL RAIN STARTING EARLY MORNING
IMPR VIS POOR TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: NW 7 WITH GUSTS PROB OF SH
SPELLS OF GOOD WEATHER VIS POOR OCNL MODERATE
REST OF THE AREA: NW 6/8 WITH GUSTS PROB OF RAIN VIS VERY POOR TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: NW 7 GUST WITH 8 INTENSITY
PROB OF RAIN NXT HVY RAIN VIS VERY POOR TO POOR
REST OF THE AREA: NW 7/6 WITH GUSTS PROB OF SH NXT RAIN VIS POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): NW 7/8 WITH GUSTS PROB OF RAIN SNOW
FALL VIS VERY POOR TO POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: NW 7 WITH GUSTS BACK SECTOR W
5/6 WITH GUSTS PROB OF RAIN STARTING EVENING IMPR VIS POOR TO MODERATE
REST OF THE AREA: SECTOR W 7 WITH GUSTS PROB OF SH OF SNOW VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/7 WITH GUSTS PROB OF SH OF RAIN
SH OF SNOW VIS POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 24, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1175/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH GUST IN 61S-64S 63W-54W UNTIL 24/1200
1176/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 64S-72S 50W-30W UNTIL 24/1500
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 960HPA 63S 44W MOV E DPN
LOW 963HPA 64S 63W MOV E DPN
LOW 960HPA 68S 58W MOV E WKN
HIGH 967HPA 67S 37W MOV E INTSF
LOW 968HPA 73S 80W MOV E DPN
231400 UTC 1.SEA ICE LIMIT 5534S 02000W 5352S 02618W 5434S 03217W 5642S 03758W 5716S 04316W 5835S 04813W 6034S 05247W 5853S 05655W 5837S 06033W 5902S 06337W 5941S 06559W 6030S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5705S 04438W 28X25NM D33B 5922S 04518W 21X12NM A76C 5427S 02626W 17X6NM A85 6045S 05251W 10X3NM ICEBERG1 6051S 05243W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5740S 03856W 9X6NM D33C 6151S 05432W 9X5NM ICEBERG2 5634S 04517W 5X3NM ICEBERG3 5835S 04955W 5X3NM ICEBERG4 5728S 04849W 4X3NM ICEBERG5 5758S 04755W 3X1NM ICEBERG6 6101S 05327W 3X2NM 4.ICEBERGS AREA A5609S 02000W 5000S 02000W 5300S 02600W 5438S 02600W B5438S 02600W 5200S 02600W 5000S 03300W 5300S 04300W 5730S 04300W C5730S 04300W 5400S 04300W 5400S 04700W 6117S 06716W 6700S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-25
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 5/7 GUST WITH 8 INTENSITY VEER SECTOR W 7 WITH GUSTS BY 24/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 8 WITH GUSTS DECR SECTOR W 7 WITH GUSTS BY 24/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 5/7 GUST WITH 8 INTENSITY VEER SECTOR W 7 WITH GUSTS BY 24/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 8 WITH GUSTS DECR SECTOR W 7 WITH GUSTS BY 24/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
GERLACHE STRAIT : SECTOR W 3/4 BACK SECTOR W 5 BY 23/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
MARGARITA BAY : NW 4/5 VEER SECTOR N 4 BY 24/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 5/6 WITH GUSTS VEER NW 4/5 BY 24/0900 PROB OF FOG AND MIST IN PATCHES SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 7/8 BACK SW 6/5 WITH GUSTS BY 24/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 8 WITH GUSTS BACK SW 6/5 WITH GUSTS BY 24/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 8 WITH GUSTS BACK SW 5/4 BY 24/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: NW 7 WITH GUSTS BACK SW 4 BY 24/0900 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NE 3/4 VEER SECTOR E 4/3 BY 24/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR TOWARDS NOON VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 2/4 VEER SECTOR E 3/4 BY 24/1500 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR=