1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 05, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1129/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 63S-69S 80W-70W UNTIL 05/0600
1130/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 IN 60S-64S 70W-50W UNTIL 06/0000
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 990HPA 68S 70W MOV E DPN EXTENDS CFNT AT 68S 70W 65S 71W 60S 72W MOV E
RIDGE 60S 48W 65S 44W 70S 48W MOV E WKN
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 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-6
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 8 WITH GUSTS VEER SW 7/5 WITH GUSTS BY 5/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS VERY POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 5/6 WITH GUSTS VEER NW 8 WITH GUSTS BY 5/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: NW 8 WITH GUSTS VEER SW 7/5 WITH GUSTS BY 5/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 5/6 WITH GUSTS VEER NW 8 WITH GUSTS BY 5/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
GERLACHE STRAIT : NE 5/6 BACK SW 6/7 BY 5/0600 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
MARGARITA BAY : SECTOR N 5/4 WITH GUSTS VEER SECTOR E 5/4 BY 5/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
EREBUS Y TERROR GULF : SW 7/8 GUST WITH 9 INTENSITY VEER SECTOR W 5 BY 5/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD 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 5/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 6/7 WITH GUSTS VEER NW 6/5 WITH GUSTS BY 5/0900 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 6/7 WITH GUSTS VEER NW 6/5 WITH GUSTS BY 5/0900 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SW 3/4 VEER NW 5/7 WITH GUSTS BY 5/0900 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS MODERATE TO VERY POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 3/4 VEER SECTOR N 5/6 BY 5/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS MODERATE TO VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 5/6 VEER SECTOR E 5/4 BY 5/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS MODERATE TO GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-04, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 406: STRONG BARIC GRADIENT ON PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST BETWEEN 55S-60S 40W-60W FROM 05/0900
WARNING 405: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST BETWEEN 40S-50S 20W-30W
WARNING 404: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR S WITH
GUST IN SOUTH PATAGONIA COASTS UNTIL 04/2100
WARNING 402: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST BETWEEN 35S-49S AND 20W-35W UNTIL 05/0300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 990HPA 49S 42W MOV E WKN EXP 45S 21W BY 04/1200 EXTENDS CFNT AT 49S 42W 44S
52W 41S 59W MOV NE
LOW 990HPA 45S 30W MOV E NC EXP 53S 26W BY 04/1200 EXTENDS CFNT AT 45S 30W 39S
34W 37S 36W MOV NE
031400 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 A81 5843S 04718W 28X25NM
D33B 5905S 05102W 21X12NM A76C 5315S 02719W 17X6NM 3.ICEBERGS SMALLER THAN 10NM
D33C 6151S 05409W 9X5NM ICEBERG1 5836S 04950W 5X3NM ICEBERG2 6037S 05225W 5X3NM
ICEBERG3 6015S 05151W 6X4NM ICEBERG4 5838S 05008W 2X1NM ICEBERG5 5845S 04910W
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 2026-09-5
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR W 3/4 BACK SECTOR S 4/5 WITH GUSTS BY 5/0300 FOG
MIST DISSIPATING VIS MODERATE TO GOOD
OUTER RIO DE LA PLATA: SECTOR W 3/4 BACK SECTOR S 4/5 WITH GUSTS BY 5/0300 FOG
MIST DISSIPATING VIS MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: SECTOR W 3/4 BACK SECTOR S 4/5 WITH GUSTS BY 5/0300
FOG MIST DISSIPATING VIS MODERATE TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR W 4/5 WITH GUSTS BACK SECTOR S BY
5/0300 VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR W 4/5 WITH GUSTS VEER SECTOR S
BY 5/0000 PROB OF ISOL RAIN VIS GOOD TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 4/5 WITH GUSTS INCR 5/6 WITH
GUSTS BY 5/0300 PROB OF ISOL RAIN VIS GOOD TO MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 6/7 WITH GUSTS DECR 4/5 BY
5/0600 PROB OF ISOL RAIN VIS MODERATE TO POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 8 WITH GUSTS DECR 5/6 WITH GUSTS
BY 04/2100 PROB OF ISOL RAIN VIS VERY POOR TO POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 6/7 WITH GUSTS DECR 5/6 WITH GUSTS
BY 5/0000 VEER SECTOR W BY 5/0300 PROB OF ISOL RAIN VIS POOR
ISLAS MALVINAS COASTS: SECTOR S 5/6 WITH GUSTS PROB OF ISOL RAIN VIS POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR N 8 WITH GUSTS BACK SECTOR W
4/5 WITH GUSTS BY 5/0600 PROB OF ISOL SH RAIN VIS VERY POOR
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS PROB OF SH RAIN VIS POOR OCNL VERY
POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR N 8 WITH GUSTS BACK
SECTOR S 4/5 WITH GUSTS BY 5/0300 PROB OF SH RAIN VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR S 4/5 WITH GUSTS VEER SECTOR W WITH GUSTS BY 04/2100
PROB OF SH RAIN VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR S 5/6 WITH GUSTS PROB OF ISOL
RAIN VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR S 5/6 WITH GUSTS PROB
OF ISOL SNOW FALL VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 4/5 WITH GUSTS PROB OF ISOL SNOW FALL VIS GOOD OCNL
MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR S 5/6 WITH GUSTS PROB
OF ISOL RAIN VIS POOR OCNL VERY POOR
REST OF THE AREA: SECTOR S 5/6 WITH GUSTS VEER SECTOR W 8 WITH GUSTS BY 5/0900
PROB OF ISOL SH RAIN VIS VERY POOR TO POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 5/6 WITH GUSTS VEER SECTOR W 6/7
WITH GUSTS BY 5/0300 PROB OF ISOL RAIN SNOW FALL VIS VERY POOR TO POOR
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