1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 19, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 968HPA 65S 40W MOV E DPN
LOW 976HPA 64S 61W MOV SE DPN
LOW 988HPA 70S 75W MOV NE WKN
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 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-20
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 5/6 WITH GUSTS VEER SECTOR W 5 WITH GUSTS BY 19/1800 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: SECTOR W 7 WITH GUSTS BACK SW 6/5 WITH GUSTS BY 19/1800 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: SW 5/6 WITH GUSTS VEER SECTOR W 5 WITH GUSTS BY 19/1800 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 REST OF THE AREA: SECTOR W 7 WITH GUSTS BACK SW 6/5 WITH GUSTS BY 19/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
GERLACHE STRAIT : SW 4/5 VEER SECTOR W 4/3 BY 19/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE
MARGARITA BAY : SECTOR N 4/3 VEER NE 4/3 BY 20/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE
EREBUS Y TERROR GULF : SECTOR S 5/6 WITH GUSTS BACK NW 5 BY 20/0600 PROB OF FOG AND MIST IN PATCHES SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 5/6 WITH GUSTS DECR SECTOR W 5/4 BY 20/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 5/6 WITH GUSTS VEER SECTOR W 5/4 BY 19/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR DURING THE NOON VIS VERY POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 3/4 WITH GUSTS VEER SECTOR W 4/3 BY 20/0000 PROB OF FOG AND MIST IN PATCHES SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: NW 6/5 WITH GUSTS BACK SW 5/6 WITH GUSTS BY 20/0000 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR E 3/4 VEER SECTOR S 4/3 BY 19/1800 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 3/4 BACK NE 5/6 BY 19/1800 PROB OF MIST VIS GOOD TO MODERATE=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-19, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 427: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR N
WITH GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W) BETWEEN 50S-60S AND
50W-40W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
RIDGE 33S 41W 44S 35W 49S 26W MOV E
LOW 993HPA 41S 81W MOV SE NC EXTENDS CFNT AT 57S 49W 53S 55W 51S 65W MOV SE
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 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-20
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 3 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR N 3/4 INCR 5/6 BY 20/0300 DECR 5/3 BY 20/0600 PROB
OF ISOL RAIN TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: NE 4/5 INCR 5/6 BY 19/2100 DECR 5/4 BY 20/0900 PROB
OF RAIN STORMS STARTING NIGTH VIS MODERATE OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 4/5 INCR 5/6 WITH GUSTS BY
20/0000 VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/5 WITH GUSTS BACK SECTOR S
5 BY 20/0900 PROB OF HVY RAIN STORMS STARTING NIGTH VIS MODERATE TO POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 4/3 INCR /5 WITH GUSTS BY
20/0000 PROB OF RAIN STORMS STARTING EVENING VIS MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 3 BACK VRB BY 19/1800 VEER SE
/5 WITH GUSTS BY 20/0900 PROB OF RAIN STARTING EVENING PROB OFHVY RAIN STARTING
EARLY MORNING VIS MODERATE OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S): VRB 3 BACK SE BY 19/2100 INCR 5/6 WITH
GUSTS BY 20/0900 PROB OF RAIN STARTING EVENING VIS MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): VRB 3/4 BACK SECTOR S /6 WITH GUSTS BY
20/0900 PROB OF ISOL RAIN PROB OF SH OF SNOW STARTING EARLY MORNING VIS GOOD TO
POOR
ISLAS MALVINAS COASTS: SECTOR W 3 BACK VRB BY 19/1800 PROB OF DRIZZLE STARTING
NIGTH VIS GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SW 5/4 VEER SECTOR W 4/3 BY 20/0000
PROB OF RAIN STORMS DURING THE MORNING VIS MODERATE TO GOOD
REST OF THE AREA: SECTOR N 4/5 INCR 5/6 WITH GUSTS BY 20/0000 PROB OF STORMS
TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR S 4 VEER NW 6/7 WITH GUSTS BY
19/2100 BACK SECTOR W 5/6 WITH GUSTS BY 20/0300 PROB OF ISOL RAIN VIS GOOD TO
MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR N 7/6 WITH GUSTS DECR /5 BY
20/0000 INCR 6 WITH GUSTS BY 20/0600 TOWARDS THE END OF THE PERIOD WORSENING VIS
MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR N 6/7 GUST WITH 8 INTENSITY BACK
SECTOR W BY 20/0600 PROB OF RAIN STARTING EARLY MORNING IMPR VIS POOR OCNL VERY
POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR N 7/8 WITH GUSTS BACK
SECTOR W 6/5 WITH GUSTS BY 19/1800 DECR 5/4 BY 20/0600 PROB OF RAIN DURING THE
MORNING PROB OF SH TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
REST OF THE AREA: SECTOR W 5 WITH GUSTS DECR /4 BY 20/0300 BACK SW 6/7 WITH
GUSTS BY 20/0900 PROB OF SH OF SNOW STARTING EARLY MORNING VIS MODERATE TO
POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 5/6 WITH GUSTS BACK SECTOR S BY
20/0300 PROB OF SNOW FALL VIS MODERATE TO POOR
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