1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 17, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1064/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-65S 50W-30W UNTIL 18/0300
1065/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-64S 60W-50W UNTIL 17/1500
1066/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR E WITH GUST IN 61S-64S 70W-58W FROM 17/2100 UNTIL 18/2100
1067/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR E WITH GUST IN 64S-66S 70W-64W FROM 17/0300 UNTIL 18/1200
1068/2026 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST IN 64S-66S 59W-50W FROM 17/0900 UNTIL 17/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 977HPA 65S 50W MOV SE DPN EXTENDS CFNT AT 65S 50W 63S 47W 60S 58W MOV E
LOW 976HPA 66S 68W MOV E WKN
LOW 972HPA 63S 82W MOV E WKN
161400 UTC 1.SEA ICE LIMIT 5448S 02000W 6458S 06350W 6453S 06351W 6403S 06137W 6116S 05515W 6213S 05906W 6228S 06019W 6455S 06324W 6348S 06140W 6210S 05834W 6240S 06055W 6220S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6022S 05218W 21X12NM A81 5904S 05105W 28X25NM A76C 5250S 03026W 16X6NM A83 6108S 05033W 12X7NM 3.ICEBERGS SMALLER THAN 10NM D33C 6140S 05419W 9X5NM ICEBERG1 6027S 05119W 5X3NM ICEBERG2 6123S 05356W 5X3NM ICEBERG3 6121S 05301W 6X4NM 4.ICEBERGS AREA A5804S 02000W 4557S 02000W 5000S 03000W 5427S 02951W B5427S 02951W 5100S 03000W 5402S 04500W 5914S 04504W C5914S 04504W 5400S 04500W 5900S 05501W 6145S 05500W D6145S 05500W 6001S 05506W 6000S 06716W 6240S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-18
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR N 7/5 WITH GUSTS VEER NE 5/4 WITH GUSTS BY 17/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 7/8 WITH GUSTS DECR NW 6/4 WITH GUSTS BY 17/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SECTOR N 7/5 WITH GUSTS VEER NE 5/4 WITH GUSTS BY 17/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 7/8 WITH GUSTS DECR NW 6/5 WITH GUSTS BY 17/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
GERLACHE STRAIT : SECTOR E 10 WITH GUSTS VEER NE 5/4 WITH GUSTS BY 18/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS MODERATE TO GOOD
MARGARITA BAY : NE 4/3 VEER SECTOR E 4/3 BY 17/2100 PROB OF MIST VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 7 GUST WITH 8 INTENSITY BACK SECTOR S 5 WITH GUSTS BY 18/0000 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 N 6/5 WITH GUSTS BACK SECTOR S 6/5 BY 17/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SE 5/6 VEER SECTOR S 5/4 BY 17/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SE 4/5 VEER SECTOR S 4 BY 17/1800 PROB OF FOG AND MIST IN PATCHES SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 64S: NW 9 WITH GUSTS BACK SECTOR W 7/5 WITH GUSTS BY 17/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR N 4/5 WITH GUSTS BACK SECTOR S 7 BY 18/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR DURING THE NIGTH VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 5 WITH GUSTS VEER SECTOR E 5/3 BY 18/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-17, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 379: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 WITH GUST IN DRAKE
AREA (55S- 60S AND 60W- 67W)
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 1002HPA 46S 51W MOV E NC EXP 46S 33W BY 17/1200 EXTENDS CFNT AT 44S 47W 41S
46W 36S 49W
161400 UTC 1.SEA ICE LIMIT 5448S 02000W 6458S 06350W 6453S 06351W 6403S 06137W
6116S 05515W 6213S 05906W 6228S 06019W 6455S 06324W 6348S 06140W 6210S 05834W
6240S 06055W 6220S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6022S 05218W 21X12NM
A81 5904S 05105W 28X25NM A76C 5250S 03026W 16X6NM A83 6108S 05033W 12X7NM
3.ICEBERGS SMALLER THAN 10NM D33C 6140S 05419W 9X5NM ICEBERG1 6027S 05119W 5X3NM
ICEBERG2 6123S 05356W 5X3NM ICEBERG3 6121S 05301W 6X4NM 4.ICEBERGS AREA A5804S
02000W 4557S 02000W 5000S 03000W 5427S 02951W B5427S 02951W 5100S 03000W 5402S
04500W 5914S 04504W C5914S 04504W 5400S 04500W 5900S 05501W 6145S 05500W D6145S
05500W 6001S 05506W 6000S 06716W 6240S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-18
COASTAL AREAS:
INNER RIO DE LA PLATA: SW 4/5 PROB OF ISOL RAIN VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: SW 4/5 PROB OF ISOL RAIN VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SW 4/5 PROB OF ISOL RAIN VIS GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 4/5 VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 4/5 VEER SECTOR W BY 17/2000
VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 4/5 VEER SECTOR N BY 17/2100
VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 4/5 VEER SECTOR N 5/6 WITH
GUSTS BY 18/0000 VIS GOOD TO MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 4/5 VEER SECTOR N 5/6 WITH GUSTS
BY 18/0000 VIS GOOD TO MODERATE
FIN DEL MUNDO COASTS(54S - 55S): NW 6/7 WITH GUSTS PROB OF ISOL RAIN VIS POOR
OCNL VERY POOR
ISLAS MALVINAS COASTS: SECTOR W 4/5 VEER SECTOR N 5/6 WITH GUSTS BY 18/0000 VIS
GOOD TO MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR W 4/5 WITH GUSTS VEER SECTOR
N 6/7 WITH GUSTS BY 17/1800 PROB OF SH RAIN VIS GOOD TO MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 6/7 WITH GUSTS VEER SECTOR S 4/5 PROB OF SH RAIN VIS
MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR W 5/6 WITH GUSTS VEER SECTOR N
6/7 WITH GUSTS BY 18/0000 PROB OF SH RAIN VIS MODERATE TO POOR OCNL VERY POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR N 6/7 GUST WITH 8
INTENSITY BACK SECTOR W BY 17/2100 PROB OF SH RAIN VIS POOR
REST OF THE AREA: SECTOR W 6/7 WITH GUSTS DECR 4/5 BY 18/0900 PROB OF ISOL RAIN
VIS POOR TO MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 5/6 INCR 6/7 WITH GUSTS BY
18/0300 PROB OF ISOL SNOW FALL VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR W 6/7 WITH GUSTS VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): NW 8 WITH GUSTS PROB OF SH RAIN VIS VERY
POOR
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