1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-11, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 374: STRONG BARIC GRADIENT ON MOV E WILL PROVOKE WINDS FORCE 8 FROM
SECTOR S WITH GUST BETWEEN 50S-60S 30W-50W FROM 11/0900
WARNING 373: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 40S-50S 30W-55W
WARNING 372: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 50S-57S AND 20W-30W UNTIL 11/0300
WARNING 371: STRONG BARIC GRADIENT ON MOV NE PROVOKES WINDS FORCE 8 FROM SW WITH
GUST IN DRAKE AREA (55S- 60S AND 60W- 67W) BETWEEN 50S-60S AND 40W-60W UNTIL
11/0900
WARNING 367: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SW WITH
GUST BETWEEN 35S-40S AND 20W-40W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
101400 UTC 1.SEA ICE LIMIT 5803S 02000W 5605S 02618W 5702S 03217W 5731S 03757W
5737S 04317W 5926S 04814W 6027S 05248W 6203S 05655W 6333S 06033W 6409S 06337W
6408S 06559W 6257S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6100S 053 27W
21X12NM A81 5909S 05106W 28X25NM A76C 5239S 03051W 16X6NM 3.ICEBERGS SMALLER
THAN 10NM D33C 6125S 05305W 9X5NM ICEBERG1 6121S 05212W 5X3NM ICEBERG2 6108S
05232W 5X3NM ICEBERG3 6049S 05203W 6X4NM 4.ICEBERGS AREA A5820S 02000W 4600S
02000W 5300S 03800W 5805S 03800W B5805S 03800W 5300S 03800W 5800S 05000W 6040S
05000W C6040S 05000W 5800S 05000W 6300S 06716W 6620S 06716W
HIGH 1035HPA 40S 62W MOV NE WKN EXP 38S 57W BY 12/0000
CFNT AT 58S 55W 55S 48W 54S 41W MOV NE
CFNT AT 42S 28W 39S 29W 34S 33W MOV E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-12
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 4/5 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR E 4/5 VIS GOOD
URUGUAY SOUTH EAST COASTS: SECTOR S 3 BACK SECTOR E 4 BY 11/1500 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): VRB 4/3 VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): VRB 4/3 VIS GOOD.
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 4 VEER SECTOR N BY 11/1800 VIS
GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 4/5 VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 6/5 WITH GUSTS VIS GOOD
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 6/7 GUST WITH 8 INTENSITY LOW PROB
OF ISOL RAIN STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SW 7/6 GUST WITH 8 INTENSITY VEER W PROB OF ISOL SH RAIN
STARTING EARLY MORNING VIS POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SW 8 WITH GUSTS PROB OF SH RAIN VIS
VERY POOR
W OF 40 - E OF 50W: SW 7/6 GUST WITH 8 INTENSITY PROB OF RAIN VIS POOR TO
MODERATE
REST OF THE AREA: SW 6/5 WITH GUSTS VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR W 5/6 WITH
GUSTS INCR 7 GUST WITH 8 INTENSITY BY 11/2100 PROB OF RAIN VIS POOR OCNL VERY
POOR
E OF 30 - S OF 45S: SECTOR W 6 WITH GUSTS BACK SECTOR S 7 GUST WITH 8 INTENSITY
BY 11/2100 PROB OF RAIN SNOW FALL VIS POOR OCNL VERY POOR
REST OF THE AREA: SECTOR W 7 GUST WITH 8 INTENSITY INCR 8 WITH GUSTS BY 11/0900
PROB OF RAIN AND SNOW MIXTURE VIS VERY POOR TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SW 8 WITH GUSTS DECR 7/6 BY
11/2300 PROB OF RAIN AND SNOW MIXTURE VIS VERY POOR TO POOR
REST OF THE AREA: SW 6/5 WITH GUSTS LOW PROB OF DRIZZLE TOWARDS THE END OF THE
PERIOD VIS MODERATE OCNL GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30 - N OF 57S: SECTOR W 8/7 WITH
GUSTS TEMPO VEER NW BACK SECTOR S 7/6 WITH GUSTS BY 11/1200 PROB OF SNOW FALL
VIS VERY POOR TO POOR
E OF 30 - S OF 57S: SECTOR W 6 WITH GUSTS BACK SECTOR S 7/6 GUST WITH 8
INTENSITY BY 11/0300 PROB OF SNOW FALL VIS POOR OCNL VERY POOR
REST OF THE AREA: SECTOR S 7 GUST WITH 8 INTENSITY INCR 8 WITH GUSTS BY 11/1500
PROB OF SNOW FALL VIS VERY POOR TO POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SW 7/8 WITH GUSTS
BACK S 7 GUST WITH 8 INTENSITY BY 11/0900 PROB OF RAIN SNOW FALL VIS VERY POOR
TO POOR
E OF 50 - S OF 55S: SECTOR S 7 GUST WITH 8 INTENSITY INCR 8 WITH GUSTS BY
11/0900 PROB OF SNOW FALL VIS VERY POOR TO POOR
REST OF THE AREA: SW 8 WITH GUSTS DECR 7/6 WITH GUSTS BY 11/0900 VEER SECTOR W
7 GUST WITH 8 INTENSITY BY 11/1800 PROB OF RAIN SNOW FALL VIS VERY POOR TO
POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SW 8/7 WITH GUSTS PROB OF RAIN AND SNOW
MIXTURE VIS VERY POOR TO POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 10, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1041/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV NE DEEPENING PROVOKES WINDS FORCE 9 FROM SW WITH GUST IN 60S-64S 70W-58W UNTIL 11/0000
1042/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 60S-65S 80W-70W UNTIL 10/1800
1043/2026 STRONG BARIC GRADIENT SOUTHERN WEDDELL SEA MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 60S-72S 50W-40W UNTIL 11/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 986HPA 62S 55W MOV E DPN
LOW 992HPA 70S 75W MOV E WKN
LOW 966HPA 63S 32W MOV E WKN
RIDGE 60S 80W 64S 80W 68S 78W MOV E INTSF
091400 UTC 1.SEA ICE LIMIT 5803S 02000W 5605S 02618W 5702S 03217W 5731S 03757W 5737S 04317W 5926S 04814W 6027S 05248W 6203S 05655W 6333S 06033W 6409S 06337W 6408S 06559W 6257S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6110S 053 30W 21X12NM A81 5919S 050 50W 28X25NM A76C 52 43S 03122W 16X6NM 3.ICEBERGS AREA A5820S 02000W 4600S 02000W 5300S 03800W 5805S 03800W B5805S 03800W 5300S 03800W 5800S 05000W 6040S 05000W C6040S 05000W 5800S 05000W 6300S 06716W 6620S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-11
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 9 WITH GUSTS VEER SECTOR W 7/5 WITH GUSTS BY 11/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 7 GUST WITH 8 INTENSITY BACK SECTOR S 6/7 WITH GUSTS BY 10/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 9 WITH GUSTS VEER SECTOR W 7/5 WITH GUSTS BY 11/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 7 GUST WITH 8 INTENSITY BACK SECTOR S 6/7 WITH GUSTS BY 10/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE
GERLACHE STRAIT : SECTOR N 3/4 VEER NE 4/3 BY 10/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE
MARGARITA BAY : NW 3/4 VEER SECTOR N 4/3 BY 11/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE
EREBUS Y TERROR GULF : SECTOR S 4/5 VEER SW 5/6 BY 10/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR TOWARDS NIGTH VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 7/8 WITH GUSTS VEER SECTOR W 6/5 WITH GUSTS BY 10/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 6/5 WITH GUSTS VEER NW 7 WITH GUSTS BY 10/1800 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 4/3 BACK SECTOR N 3/4 BY 11/0000 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SECTOR S 4/5 VEER SW 7/8 WITH GUSTS BY 10/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SW 7/8 WITH GUSTS BACK SECTOR S 9 WITH GUSTS BY 10/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS GOOD TO MODERATE OCNL POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 5/6 BACK SECTOR E 7 WITH GUSTS BY 11/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD=