1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-1, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 397: STRONG BARIC GRADIENT ON WILL PROVOKE WINDS FORCE 8 FROM SE WITH
GUST BETWEEN 35S-40S 30W-45W FROM 01/1800
WARNING 396: LOW 992HPA AT 48S 55W MOV SE DEEPENING PROVOKES WINDS FORCE 8 WITH
GUST BETWEEN 45S-50S AND 50W-60W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
311400 UTC 1.SEA ICE LIMIT 5558S 02000W 5446S 02618W 5350S 03218W 5557S 03758W
5859S 04317W 6011S 04814W 6040S 05248W 6201S 05655W 6335S 06032W 6312S 06337W
6137S 06559W 6136S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5322S 02816W 17X6NM
A81 5906S 04741W 28X25NM D33B 5917S 05040W 21X12NM 3.ICEBERGS SMALLER THAN 10NM
D33C 6147S 05421W 9X5NM ICEBERG1 5844S 05107W 5X3NM ICEBERG2 6054S 05339W 5X3NM
ICEBERG3 6023S 05229W 6X4NM 4.ICEBERGS AREA A5628S 02000W 5200S 02000W 5100S
03000W 5400S 03900W 5653S 03900W B5653S 03900W 5500S 03900W 5500S 05000W 6021S
05000W C6021S 05000W 5800S 05400W 5800S 05400W 6000S 06716W 6230S 06716W
LOW 992HPA 48S 55W MOV SE DPN EXTENDS CFNT AT ASOCIATED WITH HIGH 48S 51W 50S
56W 47S 55W
HIGH 1028HPA 37S 28W
CFNT AT 53S 70W 56S 60W 60S 55W MOV E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-9-2
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 4 UNSTABLE TOWARDS EARLY MORNING PROB OF MIST DURING
THE MORNING VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SE 4 UNSTABLE TOWARDS EARLY MORNING PROB OF MIST DURING
THE MORNING VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: E 4 VEER SE 3 PROB OF MIST DURING THE MORNING VIS
GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SE 4/3 BACK E UNSTABLE TOWARDS EARLY
MORNING PROB OF MIST TOWARDS MORNING VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): S 4 BACK NW 4/5 WITH GUSTS BACK SW 4
PROB OF ISOL RAIN TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 6 WITH GUSTS DECR 5/4 UNSTABLE
VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 6 WITH GUSTS DECR 5/4 UNSTABLE
VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 6/5 WITH GUSTS VIS GOOD
FIN DEL MUNDO COASTS(54S - 55S): SW 6 WITH GUSTS VEER W 6/7 WITH GUSTS PROB OF
ISOL RAIN VIS MODERATE OCNL GOOD
ISLAS MALVINAS COASTS: NW 6 WITH GUSTS BACK W 6 WITH GUSTS PROB OF ISOL SH VIS
GOOD OCNL MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) W OF 45W: N 5/4 BACK S 4 UNSTABLE VIS GOOD
E OF 30W: W 4 VEER NE 5/6 WITH GUSTS WORSENING WITH PROB OF RAIN TOWARDS THE
END OF THE PERIOD VIS GOOD TO MODERATE
REST OF THE AREA: W 3 VEER E 5 WITH GUSTS VEER SE 6/8 WITH GUSTS WORSENING WITH
PROB OF HVY RAIN FROM 1/1200 VIS GOOD TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) W OF 30 - S OF 45S: SW 4 VEER NE 5/8
WITH GUSTS PROB OF ISOL RAIN VIS MODERATE TO POOR
E OF 30 - S OF 45S: SE 5 WITH GUSTS VEER NW 6/8 WITH GUSTS LOW PROB OF ISOL
RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: W 5 WITH GUSTS BACK SW 4 VEER NW 6 WITH GUSTS PROB OF ISOL
RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) W OF 50 - S OF 45S: NW 8 WITH GUSTS
BACK W 8/5 WITH GUSTS PROB OF ISOL RAIN IMPR VIS POOR TO GOOD
E OF 50 - S OF 45S: N 5/7 WITH GUSTS BACK NW 8 WITH GUSTS BACK W 7/6 WITH GUSTS
PROB OF HVY RAIN NEXT ISOL RAIN VIS POOR TO MODERATE
REST OF THE AREA: NW 5/6 WITH GUSTS BACK W 6/5 WITH GUSTS PROB OF ISOL SH VIS
MODERATE OCNL GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) W OF 30 - N OF 55S: W 5 WITH GUSTS VEER
SECTOR N 7 WITH GUSTS WORSENING WITH LOW PROBABILITY OF RAIN VIS GOOD TO
MODERATE OCNL POOR
E OF 30 - N OF 55S: SW 5 WITH GUSTS VEER SECTOR N 6/7 WITH GUSTS WORSENING WITH
PROB OF RAIN STARTING EVENING VIS GOOD TO MODERATE OCNL POOR
REST OF THE AREA: W 5 WITH GUSTS VEER NW 5/6 WITH GUSTS PROB OF ISOL RAIN SNOW
FALL VIS GOOD OCNL MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: N 5/6 WITH GUSTS
VEER W 6 WITH GUSTS PROB OF RAIN VIS MODERATE OCNL POOR
W OF 50 - N OF 55S: NW 5 WITH GUSTS BACK SW 6/5 WITH GUSTS PROB OF SH VIS GOOD
OCNL MODERATE
REST OF THE AREA: NW 6 WITH GUSTS BACK W 6/7 WITH GUSTS PROB OF ISOL RAIN VIS
MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SW 6 WITH GUSTS VEER W 6/7 WITH GUSTS PROB
OF RAIN VIS MODERATE TO POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 01, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1113/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 63S-64S 58W-50W UNTIL 01/0900
1114/2026 STRONG BARIC GRADIENT MARGARITA BAY MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR E WITH GUST IN 66S-68S 69W-65W FROM 01/1200 UNTIL 01/2100
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 969HPA 66S 52W MOV E DPN
LOW 967HPA 67S 58W MOV E WKN
LOW 969HPA 69S 55W MOV E DPN
LOW 966HPA 71S 78W MOV E DPN
311400 UTC 1.SEA ICE LIMIT 5558S 02000W 5446S 02618W 5350S 03218W 5557S 03758W 5859S 04317W 6011S 04814W 6040S 05248W 6201S 05655W 6335S 06032W 6312S 06337W 6137S 06559W 6136S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5322S 02816W 17X6NM A81 5906S 04741W 28X25NM D33B 5917S 05040W 21X12NM 3.ICEBERGS SMALLER THAN 10NM D33C 6147S 05421W 9X5NM ICEBERG1 5844S 05107W 5X3NM ICEBERG2 6054S 05339W 5X3NM ICEBERG3 6023S 05229W 6X4NM 4.ICEBERGS AREA A5628S 02000W 5200S 02000W 5100S 03000W 5400S 03900W 5653S 03900W B5653S 03900W 5500S 03900W 5500S 05000W 6021S 05000W C6021S 05000W 5800S 05400W 5800S 05400W 6000S 06716W 6230S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-9-2
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 4/5 INCR SECTOR W 6/7 WITH GUSTS BY 1/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 4 VEER NW 6/7 WITH GUSTS BY 1/0900 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 4/5 INCR SECTOR W 6/7 WITH GUSTS BY 1/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 4 VEER NW 6/7 WITH GUSTS BY 1/0900 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : SW 3/4 BACK SECTOR E 4/3 BY 1/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
MARGARITA BAY : NE 3/4 VEER SECTOR E 4/5 BY 1/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 5/7 GUST WITH 8 INTENSITY INCR SW 8 WITH GUSTS BY 1/1200 PROB OF FOG AND MIST IN PATCHES PROB OFCOASTAL BLIZZARD WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 5/6 WITH GUSTS INCR SECTOR W 7 GUST WITH 8 INTENSITY BY 1/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 6/7 DECR SW 5/4 BY 1/0900 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 6/7 WITH GUSTS BACK SECTOR S 5/4 BY 1/0900 PROB OF FOG AND MIST IN PATCHES SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 64S: NW 5/7 GUST WITH 8 INTENSITY BACK SECTOR W 7 WITH GUSTS BY 1/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NE 3/4 VEER SECTOR E 5/6 WITH GUSTS BY 1/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS MORNING VIS GOOD TO MODERATE OCNL POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 4/5 BACK NE 5 BY 1/1200 PROB OF MIST VIS MODERATE TO GOOD=