1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-05, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 406: COLD FRONT AT 59S 56W 56S 65W MOV NE PROVOKES WINDS FORCE 8 FROM
SECTOR W WITH GUST BETWEEN 55S-60S AND 30W-60W
WARNING 402: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST BETWEEN 35S-40S AND 20W-25W UNTIL 05/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
041400 UTC 1.SEA ICE LIMIT 5524S 02000W 5401S 02618W 5330S 03217W 5638S 03757W
5756S 04317W 5954S 04813W 6014S 05247W 6159S 05655W 6047S 06032W 6110S 06336W
6118S 06558W 6117S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5826S 04731W 28X25NM
D33B 5904S 05117W 21X12NM A76C 5316S 02700W 17X6NM 3.ICEBERGS SMALLER THAN 10NM
D33C 6151S 05409W 9X5NM ICEBERG1 5848S 04857W 5X3NM ICEBERG2 6029S 05226W 5X3NM
ICEBERG3 6005S 05137W 6X4NM ICEBERG4 5842S 04919W 2X1NM ICEBERG5 5843S 04841W
2X1NM ICEBERG6 6020S 05128W 2X1NM 4.ICEBERGS AREA A5616S 02000W 5000S 02000W
5000S 03200W 5200S 3900S 5707S 03900W B5707S 03900W 5300S 03900W 5302S 04800W
6033S 6716S 6146S 06716W
CFNT AT 59S 56W 56S 65W MOV NE NC
HIGH 1039HPA 47S 70W MOV NW NC EXP 35S 63W BY 06/1200
LOW 998HPA 41S 35W MOV SE BLDN EXP 43S 28W BY 06/1200 EXTENDS CFNT AT 40S 35W
35S 43W MOV E
LOW 995HPA 44S 25W MOV SE BLDN EXTENDS CFNT42S 22W 34S 26W 29S 36W MOV E
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-6
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 4/5 WITH GUSTS PROB OF SH DURING THE EVENING VIS
GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR S 5/6 WITH GUSTS DECR 4 BY 6/0900 PROB OF
INTERMITTENT SH VIS MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR S 5 WITH GUSTS PROB OF SH VIS MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 5/6 WITH GUSTS DECR 5 WITH GUSTS
PROB OF SH OF RAIN SH OF SNOW IMPR STARTING NIGTH VIS MODERATE OCNL POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 5/6 WITH GUSTS DECR 4 BY
6/0600 PROB OF SH OF RAIN SH OF SNOW IMPR DURING THE EVENING VIS MODERATE OCNL
POOR TO GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 5/6 WITH GUSTS VEER SECTOR W 5
WITH GUSTS PROB OF SH OF RAIN SH OF SNOW IMPR DURING THE EVENING VIS MODERATE
OCNL POOR TO GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 5 WITH GUSTS VEER SECTOR W PROB
OF SH OF RAIN SH OF SNOW IMPR DURING THE EVENING VIS MODERATE TO GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 5 WITH GUSTS BACK SECTOR S 6 WITH
GUSTS BY 6/0900 LOW PROB OF ISOL RAIN SNOW FALL VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 5/6 WITH GUSTS PROB OF ISOL SNOW
FALL SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR W 5/6 WITH GUSTS PROB OF SH OF SNOW RAIN SPELLS OF
GOOD WEATHER VIS MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 25W: SECTOR N 8 WITH GUSTS BACK SECTOR W
5/6 WITH GUSTS PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS POOR TO MODERATE
REST OF THE AREA: SECTOR S 6/7 WITH GUSTS PROB OF SH RAIN VIS MODERATE OCNL
POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR W 7 WITH
GUSTS PROB OF SH RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR S 7 GUST WITH 8 INTENSITY PROB OF SH OF RAIN SH OF
SNOW VIS POOR OCNL MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR S 7/6 WITH GUSTS PROB OF SH OF
RAIN SH OF SNOW VIS POOR OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR S 6 WITH GUSTS VEER SECTOR W 7
WITH GUSTS PROB OF SH OF SNOW SNOW FALL SPELLS OF GOOD WEATHER VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55S: SECTOR S 7/8 WITH GUSTS DECR 7
WITH GUSTS PROB OF INTERMITTENT SH OF SNOW SNOW FALL VIS POOR
REST OF THE AREA: SECTOR W 6/7 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS
POOR OCNL MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 7 GUST WITH 8 INTENSITY SH RAIN AND
SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 05, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1131/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-65S 50W-30W UNTIL 06/0600
1132/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 60S-64S 65W-50W UNTIL 06/
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 977HPA 65S 48W MOV E DPN EXTENDS CFNT AT 65S 48W 63S 50W 60S 52W MOV E
LOW 976HPA 68S 50W MOV E WKN
RIDGE 60S 70W 65S 69W 68S 68W MOV E INTSF
041400 UTC 1.SEA ICE LIMIT 5524S 02000W 5401S 02618W 5330S 03217W 5638S 03757W 5756S 04317W 5954S 04813W 6014S 05247W 6159S 05655W 6047S 06032W 6110S 06336W 6118S 06558W 6117S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5826S 04731W 28X25NM D33B 5904S 05117W 21X12NM A76C 5316S 02700W 17X6NM 3.ICEBERGS SMALLER THAN 10NM D33C 6151S 05409W 9X5NM ICEBERG1 5848S 04857W 5X3NM ICEBERG2 6029S 05226W 5X3NM ICEBERG3 6005S 05137W 6X4NM ICEBERG4 5842S 04919W 2X1NM ICEBERG5 5843S 04841W 2X1NM ICEBERG6 6020S 05128W 2X1NM 4.ICEBERGS AREA A5616S 02000W 5000S 02000W 5000S 03200W 5200S 3900S 5707S 03900W B5707S 03900W 5300S 03900W 5302S 04800W 6033S 6716S 6146S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-6
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 7/5 WITH GUSTS VEER SECTOR W 6/5 WITH GUSTS BY 05/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS MODERATE TO VERY POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 9 WITH GUSTS BACK NW 8 WITH GUSTS BY 05/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 7/5 WITH GUSTS VEER SECTOR W 6/5 WITH GUSTS BY 05/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS MODERATE TO VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 9 WITH GUSTS BACK NW 8 WITH GUSTS BY 05/1800 PROB OF FOG PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
GERLACHE STRAIT : SECTOR S 3/4 TEMPO BACK NE 4 BY 6/0300 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE
MARGARITA BAY : SECTOR N 4/5 WITH GUSTS VEER NE 5/6 BY 6/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
EREBUS Y TERROR GULF : SW 9 WITH GUSTS VEER SECTOR W 5/4 BY 6/0000 PROB OF FOG AND MIST IN PATCHES BLIZZARD PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 7/8 WITH GUSTS VEER NW 6/5 WITH GUSTS BY 05/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NW 6/7 GUST WITH 8 INTENSITY BACK SW 8 WITH GUSTS BY 6/0000 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NW 6/7 WITH GUSTS VEER SECTOR W 6/5 WITH GUSTS BY 05/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR DURING THE NIGTH VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: NW 8 GUST WITH 9 INTENSITY BACK SW 7 GUST WITH 8 INTENSITY BY 05/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR DURING THE NIGTH VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: NE 3/4 VEER SE 5/4 BY 05/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS MODERATE TO VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 4/5 VEER SECTOR E 5/4 BY 05/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS MODERATE TO GOOD=