1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-02, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 400: LOW 984HPA AT 57S 22W MOV SE WEAKENING PROVOKES WINDS FORCE 8 FROM
SECTOR W WITH GUST BETWEEN 50S-55S AND 20W-30W UNTIL 02/1500
WARNING 399: LOW 972HPA AT 58S 63W MOV SE NOT CHANGE PROVOKES WINDS FORCE 8 FROM
SECTOR W WITH GUST IN FIN DEL MUNDO COASTS DRAKE AREA (55S- 60S AND 60W- 67W)
BETWEEN 55S-60S AND 50W-60W UNTIL 03/0000
WARNING 397: LOW 990HPA AT 35S 36W MOV SE INTENSIFYING EXPECTED 46S 20W BY
03/1200 PROVOKES WINDS FORCE 9 AROUND ITSELF WITH GUST BETWEEN 35S-50S AND
20W-40W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 990HPA 35S 36W MOV SE DPN EXP 46S 20W BY 03/1200 EXTENDS OFNT AT 38S 58W 35S
40W MOV SE
LOW 984HPA 57S 22W MOV SE WKN EXTENDS CFNT57S 22W 51S 23W 46S 28W MOV E
LOW 972HPA 58S 63W MOV SE NC EXTENDS CFNT58S 63W 56S 66W MOV E
LOW 1008HPA 43S 67W MOV NE DPN EXP 39S 46W BY 03/1200
RIDGE 33S 54W 38S 54W 46S 55W MOV NE
011400 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 5319S 02811W 17X6NM
A81 5904S 04727W 28X25NM D33B 5914S 05041W 21X12NM 3.ICEBERGS SMALLER THAN 10NM
D33C 6152S 05423W 9X5NM ICEBERG1 5841S 05100W 5X3NM ICEBERG2 6053S 05327W 5X3NM
ICEBERG3 6020S 05228W 6X4NM ICEBERG4 5844S 05055W 2X1NM ICEBERG5 5830S 05050W
2X1NM 4.ICEBERGS AREA A5700S 02000W 4700S 02000W 5200S 04900W 6100S 04900W
B5600S 04900W 6100S 04900W 6600S 06600W 6600S 06600W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-3
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 3/4 BACK SECTOR S 3/4 VEER SECTOR W 3/5 WITH
GUSTS MIST FOG PATCHES DISSIPATING PROB OFHVY RAIN STORMS STARTING EARLY MORNING
VIS MODERATE OCNL GOOD
OUTER RIO DE LA PLATA: SECTOR N 3/4 BACK SECTOR S 3/4 VEER SECTOR W 3/5 WITH
GUSTS MIST FOG PATCHES DISSIPATING PROB OFHVY RAIN STORMS STARTING EARLY MORNING
VIS MODERATE OCNL GOOD
URUGUAY SOUTH EAST COASTS: SECTOR N 3/6 WITH GUSTS BACK SECTOR W 5 WITH GUSTS
PROB OF HVY RAIN STORMS STARTING EARLY MORNING VIS MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 3/4 WITH GUSTS BACK SECTOR W 4/6
WITH GUSTS MIST FOG PATCHES DISSIPATING PROB OFHVY RAIN STORMS IMPR TOWARDS THE
END OF THE PERIOD VIS MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/5 WITH GUSTS BACK SECTOR W
4/5 WITH GUSTS PROB OF HVY RAIN STORMS IMPR TOWARDS EARLY MORNING VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5/4 WITH GUSTS BACK SECTOR S
4/5 WITH GUSTS PROB OF ISOL HVY RAIN SPELLS OF GOOD WEATHER VIS MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 3/4 PROB OF HVY RAIN IMPR
TOWARDS EARLY MORNING VIS MODERATE TO GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 5/6 GUST WITH 8 INTENSITY PROB OF
ISOL RAIN RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4/6 WITH GUSTS BACK SECTOR S 4/5
WITH GUSTS PROB OF ISOL RAIN SNOW FALL SPELLS OF GOOD WEATHER VIS POOR
ISLAS MALVINAS COASTS: SECTOR W 5/6 GUST WITH 8 INTENSITY PROB OF ISOL RAIN RAIN
AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR N 8 WITH GUSTS VEER SECTOR W
8/6 WITH GUSTS PROB OF HVY RAIN STORMS IMPR TOWARDS THE END OF THE PERIOD VIS
POOR
E OF 40W: SECTOR S 8 WITH GUSTS VEER SECTOR W 8/5 WITH GUSTS PROB OF HVY RAIN
STORMS IMPR TOWARDS THE END OF THE PERIOD VIS POOR
REST OF THE AREA: SECTOR S 5/4 VEER SECTOR N 5/6 GUST WITH 8 INTENSITY BACK
SECTOR W 5/6 WITH GUSTS PROB OF HVY RAIN STORMS STARTING EVENING VIS MODERATE
OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR N 8 WITH
GUSTS VEER SECTOR S 8 WITH GUSTS PROB OF HVY RAIN RAIN AND SNOW MIXTURE STORMS
VIS POOR
W OF 30 - N OF 45S: SECTOR S 8/6 WITH GUSTS VEER SECTOR W 6/5 WITH GUSTS PROB
OF HVY RAIN RAIN AND SNOW MIXTURE STORMS VIS POOR
E OF 30 - S OF 45S: SECTOR N 5 WITH GUSTS VEER SECTOR S 8 WITH GUSTS PROB OF
HVY RAIN RAIN AND SNOW MIXTURE STORMS VIS POOR
REST OF THE AREA: SECTOR S 3 PROB OF ISOL SH RAIN RAIN AND SNOW MIXTURE VIS
MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: SECTOR W 4/3 VEER SECTOR E 3
PROB OF HVY RAIN STORMS VIS MODERATE
REST OF THE AREA: SECTOR W 3/5 WITH GUSTS PROB OF ISOL SH RAIN RAIN AND SNOW
MIXTURE VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55 - E OF 50W: SECTOR W 8/4 WITH
GUSTS BACK SECTOR S 5/6 WITH GUSTS PROB OF ISOL RAIN SNOW FALL SPELLS OF GOOD
WEATHER VIS POOR TO MODERATE
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS VEER SECTOR N 5/6 WITH GUSTS PROB OF
ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR W 5/6 WITH GUSTS BACK
SECTOR S 5 WITH GUSTS PROB OF ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS
MODERATE
W OF 50 - S OF 55S: SECTOR W 5/6 WITH GUSTS VEER SECTOR N 6 GUST WITH 8
INTENSITY BACK SECTOR S 6 WITH GUSTS PROB OF ISOL SNOW FALL SPELLS OF GOOD
WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 8/6 WITH GUSTS BACK SECTOR S 6/4 WITH GUSTS PROB OF
ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 8/6 WITH GUSTS BACK SECTOR S 6/3
WITH GUSTS PROB OF ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 02, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1121/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-65S 40W-30W UNTIL 03/0000
1122/2026 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 63S-70S 59W-50W UNTIL 03/0600
1123/2026 STRONG BARIC GRADIENT SOUTHERN WEDDELL SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM NE WITH GUST VEER SECTOR E IN 68S-73S 50W-30W UNTIL 03/0300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 955HPA 68S 38W MOV E DPN
LOW 965HPA 64S 35W MOV E WKN
LOW 974HPA 60S 60W MOV E DPN
HIGH 993HPA 65S 78W MOV E INTSF
LOW 988HPA 61S 82W 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 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-3
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR S 3/4 VEER SW 5/6 BY 3/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 5/6 WITH GUSTS BACK SECTOR S 5/4 BY 02/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SECTOR S 3/4 VEER SW 5/6 BY 3/0000 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 REST OF THE AREA: SW 5/6 WITH GUSTS BACK SECTOR S 5/4 BY 02/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE
GERLACHE STRAIT : SW 4/5 BACK SECTOR S 4 BY 02/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
MARGARITA BAY : SE 3/4 BACK SECTOR E 4/3 BY 02/2100 PROB OF MIST VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 8/6 WITH GUSTS INCR SW 7 GUST WITH 8 INTENSITY BY 3/0300 PROB OF FOG AND MIST IN PATCHES PROB OFCOASTAL BLIZZARD SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR E 3/4 VEER NE 4/3 BY 02/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 3/4 BACK SE 4/3 BY 02/1800 PROB OF FOG AND MIST IN PATCHES IMPR STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR S 4/3 VEER SECTOR W 4/3 BY 02/2100 PROB OF FOG AND MIST IN PATCHES IMPR STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 64S: NW 8 GUST WITH 9 INTENSITY BACK SECTOR W 7 WITH GUSTS BY 3/0000 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NE 7 GUST WITH 8 INTENSITY BACK SECTOR N 8 WITH GUSTS BY 02/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 4/5 VEER SECTOR E 5/7 BY 02/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE=