1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-23, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 434: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM NE WITH GUST
BETWEEN 35S-40S 20W-30W
WARNING 432: LOW 968HPA AT 48S 31W MOV SE WEAKENING PROVOKES WINDS FORCE 8
AROUND ITSELF BETWEEN 40S-50S AND 20W-40W UNTIL 23/1500
PART 2 GENERAL SYNOPSIS AT 21:00UTC
221400 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 5716S 04457W 28X25NM
D33B 5925S 04514W 21X12NM A76C 5429S 02624W 17X6NM A85 6055S 05330W 10X3NM
ICEBERG1 6055S 05301W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5747S 03830W 9X6NM
D33C 6146S 05424W 9X5NM ICEBERG2 5648S 04555W 5X3NM ICEBERG3 5847S 05030W 5X3NM
ICEBERG4 5752S 04906W 4X3NM ICEBERG5 5808S 04804W 3X1NM ICEBERG6 6109S 05339W
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 968HPA 45S 31W MOV SE WKN EXTENDS CFNT AT MOV E
RIDGE OUTER RIO DE LA PLATA MAR DEL PLATA COASTS RINCON BAHIA BLANCA COASTS MOV
E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-24
COASTAL AREAS:
INNER RIO DE LA PLATA: VRB 3 SECTOR N 4 BY 23/0900 VIS GOOD
OUTER RIO DE LA PLATA: VRB 3 SECTOR N 4/5 WITH GUSTS BY 23/0900 VIS GOOD
URUGUAY SOUTH EAST COASTS: SW 4 BACK SECTOR N 4 BY 23/1500 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): VRB 3 NW 5/6 WITH GUSTS BY 23/0600 PROB
OF ISOL RAIN STARTING EARLY MORNING VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): NW 6/6 GUST WITH 8 INTENSITY PROB OF
RAIN STARTING EARLY MORNING TOWARDS THE END OF THE PERIOD IMPR VIS MODERATE
POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 7/6 GUST WITH 8 INTENSITY PROB
OF SH TOWARDS THE END OF THE PERIOD VIS POOR MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5/6 WITH GUSTS BACK NW 6 BY
23/0900 PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 5 WITH GUSTS BACK SECTOR S 5/6
WITH GUSTS BY 23/1500 PROB OF RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): NW 5 BACK SECTOR S 5 WITH GUSTS BY 23/1500
PROB OF SH OF SNOW STARTING EVENING VIS MODERATE
ISLAS MALVINAS COASTS: NW 5 WITH GUSTS BACK SECTOR S 4 BY 23/2100 PROB OF SH OF
RAIN SH OF SNOW VIS MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 8 WITH GUSTS BACK W 6 WITH GUSTS
BY 23/1500 PROB OF RAIN VIS VERY POOR
W OF 30 - E OF 50W: SECTOR W 7/6 GUST WITH 8 INTENSITY DECR 4 BY 23/1800 PROB
OF SH VIS POOR
REST OF THE AREA: SECTOR S 6/5 VEER NW 5/6 WITH GUSTS BY 23/1200 PROB OF SH
SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR W 8/7 WITH GUSTS PROB
OF SH RAIN VIS VERY POOR
E OF 30 - S OF 45S: NW 8 WITH GUSTS BACK SECTOR S 6 WITH GUSTS BY 23/1500 PROB
OF RAIN VIS VERY POOR
REST OF THE AREA: SECTOR S 8/6 WITH GUSTS PROB OF RAIN SNOW FALL VIS VERY POOR
TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: VRB 7/6 GUST WITH 8
INTENSITY VEER NW 6/7 GUST WITH 8 INTENSITY BY 23/1500 PROB OF RAIN AND SNOW
MIXTURE VIS POOR
REST OF THE AREA: NW 6/7 GUST WITH 8 INTENSITY PROB OF SH STARTING EARLY
MORNING VIS MODERATE TO POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30 - N OF 55S: NW 6 WITH GUSTS BACK
SECTOR S 6 WITH GUSTS BY 23/0900 PROB OF RAIN SNOW FALL VIS POOR
E OF 30 - S OF 55S: SECTOR E 5 WITH GUSTS VEER SECTOR W 5/6 WITH GUSTS BY
23/1200 PROB OF SNOW FALL STARTING EARLY MORNING IMPR VIS POOR TO MODERATE
REST OF THE AREA: SECTOR S 7/6 WITH GUSTS VEER SECTOR W 6 WITH GUSTS BY 23/1200
PROB OF SH OF SNOW VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: NW 5 WITH GUSTS PROB OF RAIN
AND SNOW MIXTURE VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 6/7 GUST WITH 8 INTENSITY PROB OF SNOW FALL VIS
POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 7/6 GUST WITH 8 INTENSITY BACK SW 6
WITH GUSTS BY 23/1200 PROB OF SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS
POOR TO MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 22, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1169/2026 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 70W-55W UNTIL 23/0000
1170/2026 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 09:00UTC
LOW 963HPA 67S 43W MOV E DPN
LOW 970HPA 66S 73W MOV E DPN
RIDGE 60S 60W 62S 59W 64S 59W 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 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-23
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 7/8 WITH GUSTS BACK SW 7 WITH GUSTS BY 23/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 8 WITH GUSTS BACK SECTOR W 7 WITH GUSTS BY 23/0300 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: NW 7/8 WITH GUSTS BACK SW 7 WITH GUSTS BY 23/0000 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 REST OF THE AREA: NW 8 WITH GUSTS BACK SECTOR W 7 WITH GUSTS BY 23/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
GERLACHE STRAIT : NE 4/5 VEER SECTOR E 4 BY 22/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
MARGARITA BAY : SECTOR N 4/3 VEER NE 3/4 BY 23/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EVENING VIS POOR TO MODERATE OCNL GOOD
EREBUS Y TERROR GULF : SE 3/4 VEER SECTOR S 5/4 BY 22/2100 PROB OF FOG AND MIST IN PATCHES WORSENING DURING THE NIGTH VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: NW 7 GUST WITH 8 INTENSITY BACK SECTOR S 5 WITH GUSTS BY 22/2100 PROB OF FOG PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH 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 22/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 3/4 BACK SECTOR S 4/3 BY 22/1500 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 6/5 BY 22/1800 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 22/1800 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 22/1800 PROB OF MIST VIS GOOD TO MODERATE=