1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 16, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1057/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR N WITH GUST IN 60S-65S 90W-70W UNTIL 17/0300
1058/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 WITH GUST IN 60S-64S 70W-50W FROM 16/2100 UNTIL 17/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 976HPA 63S 88W MOV E DPN
LOW 991HPA 62S 62W MOV E DPN
LOW 987HPA 67S 58W MOV E DPN
RIDGE 60S 70W 64S 70W 67S 69W 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 2026-08-17
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 5/6 VEER NW 7/8 BY 16/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 5/7 WITH GUSTS VEER NW 8 WITH GUSTS BY 17/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 5/6 VEER NW 7/8 WITH GUSTS BY 16/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 5/7 WITH GUSTS VEER NW 8 WITH GUSTS BY 17/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : SECTOR N 3/4 VEER NE 5/7 GUST WITH 8 INTENSITY BY 17/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
MARGARITA BAY : NE 4/5 BACK N 4/3 BY 17/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : NW 3/4 BACK SW 4/5 BY 16/1800 PROB OF MIST VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR N 7/8 WITH GUSTS BACK SECTOR W 6/5 BY 16/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NE 4/5 VEER SE 5/5 BY 17/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS GOOD TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NE 3/4 VEER SE 5/6 BY 17/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA N OF 64S: SECTOR W 5/6 WITH GUSTS VEER NW 5/4 BY 17/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR N 5/6 BACK SW 4/3 BY 17/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 7/8 WITH GUSTS VEER SECTOR E 6/4 BY 16/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-16, 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 WILL PROVOKE WINDS FORCE 8 WITH GUST IN DRAKE
AREA (55S- 60S AND 60W- 67W) FROM 17/0000
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 1006HPA 50S 62W MOV E WKN
LOW 1008HPA 44S 62W MOV SE DPN EXTENDS CFNT AT 44S 62W 39S 64W MOV SE EXP 45S
46W 41S 45W 36S 56W BY 17/1200
HIGH 1031HPA 35S 37W MOV NE INTSF EXP 31S 30W BY 17/1200
151400 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 6023S 05226W 21X12NM
A81 5906S 05111W 28X25NM A76C 5249S 03031W 16X6NM A83 6104S 05049W 12X7NM
3.ICEBERGS SMALLER THAN 10NM D33C 6134S 05418W 9X5NM ICEBERG1 6027S 05119W 5X3NM
ICEBERG2 6128S 05333W 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 2026-08-17
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 3 BACK SE 4/5 BY 17/0600 PROB OF MIST FOG
PATCHES DRIZZLE VIS MODERATE
OUTER RIO DE LA PLATA: VRB 3 VEER SECTOR S 4 BY 17/0600 PROB OF ISOL MIST FOG
PATCHES RAIN SPELLS OF GOOD WEATHER VIS MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR N 5 BACK SECTOR S 3/4 BY 16/2100 PROB OF
DRIZZLE RAIN VIS POOR
MAR DEL PLATA COASTS(3617S - 3830S): VRB 3 BACK SECTOR S BY 16/2100 INCR 4/5
BY 17/0900 PROB OF DRIZZLE RAIN MIST FOG PATCHES VIS POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR W 3 BACK SECTOR S 4/5 BY
16/2100 PROB OF DRIZZLE FOG AND MIST IN PATCHES VIS POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 5 WITH GUSTS VEER SECTOR W 3/4
BY 17/0600 PROB OF ISOL RAIN PROB OF MIST FOG PATCHES VIS POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 5 WITH GUSTS VEER SECTOR W BY
17/0600 FOG PATCHES DRIZZLE VIS POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 5 WITH GUSTS VEER SECTOR W 4 BY
17/0600 PROB OF MIST FOG PATCHES DRIZZLE RAIN VIS POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 4/3 VEER NW 5/6 WITH GUSTS BY
17/0000 MIST FOG PATCHES VIS POOR
ISLAS MALVINAS COASTS: VRB 3/4 PROB OF DRIZZLE RAIN MIST FOG PATCHES VIS POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SW 5/4 VEER SECTOR W 4/3 BY 17/0600
VIS GOOD
REST OF THE AREA: SECTOR N 6/7 WITH GUSTS BACK SECTOR S 5/4 BY 17/0600 PROB OF
RAIN STORMS VIS POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR W 5/6 WITH GUSTS PROB OF ISOL
RAIN VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR W 5/6 WITH GUSTS VEER
SECTOR N 6/7 WITH GUSTS BY 16/2100 PROB OF RAIN STORMS STARTING EVENING VIS
MODERATE TO POOR
REST OF THE AREA: SECTOR N 5/4 VEER SECTOR W BY 17/0000 INCR 6/7 WITH GUSTS BY
17/0600 PROB OF RAIN STORMS PROB OF SH VIS POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 6/5 INCR 6/7 WITH GUSTS BY
17/0300 PROB OF SNOW FALL STARTING EARLY MORNING VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SW 4/5 INCR 5/6 BY 16/1800 VEER NW 6/7
GUST WITH 8 INTENSITY BY 17/0600 VIS MODERATE TO POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 5 WITH GUSTS VEER NW 7/8 WITH GUSTS
BY 17/0000 LOW PROB OF RAIN TOWARDS THE END OF THE PERIOD VIS MODERATE TO VERY
POOR
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