1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-16, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 380: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 40S-50S 20W-30W UNTIL 16/0600
WARNING 379: STRONG BARIC GRADIENT ON MOV E WILL PROVOKE WINDS FORCE 8 WITH GUST
IN DRAKE AREA (55S- 60S AND 60W- 67W) FROM 16/2100
WARNING 378: STRONG BARIC GRADIENT ON MOV E WILL PROVOKE WINDS FORCE 8 FROM
SECTOR N WITH GUST BETWEEN 35S-40S 40W-60W FROM 16/0600
PART 2 GENERAL SYNOPSIS AT 21:00UTC
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
HIGH 1029HPA 35S 42W MOV E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-17
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 3 PROB OF ISOL DRIZZLE RAIN VIS MODERATE OCNL
POOR
OUTER RIO DE LA PLATA: SECTOR S 3 PROB OF ISOL DRIZZLE RAIN VIS MODERATE OCNL
POOR
URUGUAY SOUTH EAST COASTS: SECTOR N 5/4 WITH GUSTS VEER NE 6/7 WITH GUSTS BY
16/0600 BACK SECTOR N 5/4 WITH GUSTS BY 16/1500 PROB OF RAIN STORMS VIS
MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 5 WITH GUSTS BACK SECTOR S 4
WITH GUSTS BY 16/1200 PROB OF ISOL RAIN IMPR STARTING EARLY MORNING VIS MODERATE
TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 5/4 WITH GUSTS BACK SW 4/5
WITH GUSTS BY 16/1200 PROB OF DRIZZLE RAIN IMPR STARTING EVENING VIS MODERATE TO
GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 6/5 WITH GUSTS BACK SW 5/6
WITH GUSTS BY 16/0900 PROB OF ISOL RAIN NEXT UNSTABLE STARTING EARLY MORNING VIS
MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SW 5/6 WITH GUSTS UNSTABLE ISOL RAIN
STARTING EVENING VIS MODERATE OCNL GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 4 WITH GUSTS VEER SECTOR S 5/6
WITH GUSTS BY 16/0300 SNOW FALL VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 3/4 WITH GUSTS VEER NW 5 WITH GUSTS
BY 16/2100 UNSTABLE VIS GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: SECTOR N 4 WITH GUSTS VEER SE 4 WITH GUSTS BY 16/1200
UNSTABLE IMPR STARTING EARLY MORNING VIS MODERATE OCNL GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SW 5/4 WITH GUSTS UNSTABLE DURING
THE EARLY MORNING VIS MODERATE TO GOOD
E OF 50 - W OF 40W: VRB 3/4 BACK SECTOR N 5/6 WITH GUSTS BY 16/0600 INCR 7/8
WITH GUSTS BY 16/1500 PROB OF RAIN STORMS STARTING EARLY MORNING VIS GOOD TO
POOR
REST OF THE AREA: NE 6/7 GUST WITH 8 INTENSITY BACK SECTOR N 7/8 WITH GUSTS BY
16/0600 BACK SECTOR W 5 WITH GUSTS BY 16/1800 PROB OF RAIN STORMS IMPR TOWARDS
THE END OF THE PERIOD VIS POOR TO GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR W 8/7 WITH GUSTS DECR
6/5 WITH GUSTS BY 16/0600 PROB OF SH RAIN VIS POOR TO MODERATE
REST OF THE AREA: SW 6/5 WITH GUSTS VEER SECTOR W 5/6 WITH GUSTS BY 16/0600
PROB OF DRIZZLE VIS MODERATE OCNL GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: NW 6/5 WITH GUSTS VEER
SECTOR N 5/6 WITH GUSTS BY 16/1800 PROB OF RAIN STORMS STARTING EVENING VIS GOOD
TO POOR
N OF 45 - W OF 50W: SECTOR N 5 WITH GUSTS VEER SECTOR W 5/6 WITH GUSTS BY
16/1500 PROB OF RAIN STORMS IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL
POOR TO GOOD
REST OF THE AREA: SECTOR N 5 WITH GUSTS VEER SECTOR S 4/5 WITH GUSTS BY 16/1500
PROB OF RAIN VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SW 7/6 GUST WITH 8 INTENSITY
VEER SECTOR W 5 WITH GUSTS BY 16/1800 PROB OF ISOL SNOW FALL VIS MODERATE OCNL
POOR
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS PROB OF ISOL SNOW FALL VIS MODERATE
OCNL GOOD
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR W 5 WITH GUSTS INCR 5/6
WITH GUSTS BY 16/2100 PROB OF ISOL SNOW FALL VIS GOOD TO MODERATE
N OF 55 - W OF 50W: SECTOR W 4 WITH GUSTS PROB OF RAIN SNOW FALL VIS MODERATE
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS PROB OF ISOL RAIN SNOW FALL VIS
MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 5 WITH GUSTS VEER NW 7/8 WITH GUSTS
BY 16/2100 PROB OF ISOL SNOW FALL VIS GOOD OCNL MODERATE TO POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 16, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1055/2026 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
1056/2026 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 21:00UTC
LOW 973HPA 72S 48W MOV E DPN
LOW 987HPA 63S 54W MOV E DPN
LOW 992HPA 64S 71W MOV E DPN
RIDGE 60S 33W 64S 32W 67S 30W MOV E WKN
RIDGE 60S 80W 63S 80W 67S 82W MOV E WKN
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 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-17
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 3/4 VEER NW 5/6 BY 16/0900 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 7/8 WITH GUSTS VEER NW 6/5 WITH GUSTS BY 16/1200 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 3/4 VEER NW 5/6 BY 16/0900 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 6/8 WITH GUSTS VEER NW 6/5 WITH GUSTS BY 16/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : NE 3/4 BACK NW 4/3 BY 16/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
MARGARITA BAY : NE 4/3 BACK SECTOR N 3/4 BY 16/0900 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 3/4 VEER NW 4/5 BY 16/1500 PROB OF MIST VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 4/5 VEER SECTOR N 7/8 BY 16/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 4/3 VEER NE 3/3 BY 16/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 4/3 VEER SECTOR N 3/4 BY 16/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SECTOR W 5/7 WITH GUSTS VEER NW 5/4 BY 16/1500 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 SECTOR W 4/3 BY 16/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 5/7 WITH GUSTS VEER SECTOR E 6/4 BY 16/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR=