1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-26, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 393: STRONG BARIC GRADIENT EXPECTED 40S 50W 50S 60W BY 26/1800 WILL
PROVOKE WINDS FORCE 8 FROM SECTOR N WITH GUST
WARNING 389: LOW 987HPA AT 44S 23W MOV SE DEEPENING EXPECTED 35S 45W 20S 30W BY
26/0000 PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST
PART 2 GENERAL SYNOPSIS AT 21:00UTC
251400 UTC 1.SEA ICE LIMIT 5504S 02000W 5410S 02618W 5417S 03217W 5617S 03757W
5700S 04316W 5806S 04814W 5954S 05247W 6116S 05655W 6132S 06032W 6042S 06337W
6040S 06559W 6150S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6005S 04939W 21X12NM
A81 5835S 05021W 28X25NM A76C 5338S 02955W 16X6NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 5915S 05027W 5X3NM ICEBERG2 6052S 05452W 5X3NM ICEBERG3 6100S 05359W
6X4NM ICEBERG4 6056S 05434W 2X1NM ICEBERG5 6051S 05416W 2X1NM 4.ICEBERGS AREA
A5614S 02000W 4800S 02000W 5300S 03600W 5620S 03600W B5620S 03600W 5300S 03600W
5400S 05000W 5945S 05000W C5945S 05000W 5700S 05000W 6000S 06716W 6240S 06716W
HIGH 1020HPA 41S 48W MOV NE INTSF EXP 37S 40W BY 27/0000 EXTENDS RIDGE AT 46S
48W 49S 48W 53S 46W
LOW 987HPA 44S 23W MOV SE DPN
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-27
COASTAL AREAS:
INNER RIO DE LA PLATA: NE 5 VEER E 4 LOW PROB OF ISOL RAIN TOWARDS THE END OF
THE PERIOD VIS GOOD MODERATE
OUTER RIO DE LA PLATA: NE 5 VEER E 4 LOW PROB OF ISOL RAIN TOWARDS THE END OF
THE PERIOD VIS GOOD MODERATE
URUGUAY SOUTH EAST COASTS: NE 5/6 WITH GUSTS LOW PROB OF ISOL RAIN TOWARDS THE
END OF THE PERIOD VIS GOOD MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 6 WITH GUSTS PROB OF MIST NXT
ISOL STORMS STARTING EVENING VIS MODERATE OCNL GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 6 WITH GUSTS TEMPO BACK BY
26/2100 PROB OF ISOL RAIN STARTING EARLY MORNING VIS GOOD MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5/6 WITH GUSTS BACK SECTOR W
BY 26/1800 PROB OF ISOL RAIN STARTING EVENING VIS MODERATE OCNL VERY POOR TO
GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 4/5 WITH GUSTS BACK SECTOR W 6
WITH GUSTS BY 26/1800 PROB OF ISOL RAIN STARTING EVENING VIS MODERATE GOOD
SOUTH PATAGONIA COASTS(48S - 54S): VRB 4/3 PROB OF ISOL RAIN STARTING EARLY
MORNING SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): VRB 4/3 PROB OF ISOL RAIN STARTING EARLY
MORNING IMPR VIS MODERATE GOOD
ISLAS MALVINAS COASTS: SECTOR N 6/5 DECR VRB 3 BY 26/2100 PROB OF RAIN VIS
MODERATE POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR W 8 WITH GUSTS DECR 7/6 BY
26/1200 PROB OF RAIN VIS VERY POOR POOR
E OF 30 - E OF 40W: SECTOR S 6/5 WITH GUSTS PROB OF ISOL RAIN TOWARDS THE END
OF THE PERIOD IMPR VIS MODERATE GOOD
W OF 40 - E OF 50W: SECTOR S 5 DECR VRB 3/4 INCR SECTOR N 5 WITH GUSTS BY
26/1800 PROB OF ISOL RAIN STARTING EARLY MORNING IMPR VIS MODERATE GOOD
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS PROB OF ISOL RAIN STARTING EVENING
VIS GOOD MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR W 8 WITH
GUSTS BACK SECTOR W 7 GUST WITH 8 INTENSITY BY 26/1200 PROB OF RAIN VIS VERY
POOR POOR
E OF 30 - S OF 45S: SECTOR S 7/6 GUST WITH 8 INTENSITY PROB OF RAIN AND SNOW
MIXTURE VIS POOR
REST OF THE AREA: SECTOR S 5/5 WITH GUSTS LOW PROB OF RAIN AND SNOW MIXTURE
TOWARDS THE END OF THE PERIOD IMPR VIS MODERATE GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 6/5 WITH GUSTS DECR
VRB 4 INCR SECTOR N 6/7 WITH GUSTS BY 26/1500 PROB OF ISOL RAIN TOWARDS THE END
OF THE PERIOD VIS GOOD POOR
REST OF THE AREA: SECTOR N 6/7 WITH GUSTS INCR 8 WITH GUSTS BY 26/1800 PROB OF
RAIN VIS MODERATE VERY POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR S 6/7 GUST WITH 8
INTENSITY PROB OF ISOL SNOW FALL VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS PROB OF SNOW FALL VIS MODERATE POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR S 5 VEER
SECTOR W BY 26/0600 VEER SECTOR N 6 WITH GUSTS BY 26/0000 PROB OF RAIN AND SNOW
MIXTURE VIS MODERATE OCNL POOR
S OF 50 - S OF 55S: SECTOR W 5 WITH GUSTS VEER SECTOR N BY 26/0000 PROB OF RAIN
AND SNOW MIXTURE VIS MODERATE POOR
W OF 50 - N OF 55S: VRB 6/7 GUST WITH 8 INTENSITY SECTOR N RAIN STARTING EARLY
MORNING VIS GOOD TO POOR OCNL VERY POOR
REST OF THE AREA: SECTOR N 6/5 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS
MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 5 WITH GUSTS DECR VRB 4 PROB OF
RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 26, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1106/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SE WITH GUST IN 60S-64S 90W-80W UNTIL 26/0300
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 993HPA 60S 66W MOV SE DPN
LOW 999HPA 64S 52W MOV SE DPN
RIDGE 68S 90W 67S 8W 65S 72W MOV SE WKN
WFNT AT 60S 90W 63S 80W 62S 75W MOV SE DPN
251400 UTC 1.SEA ICE LIMIT 5504S 02000W 5410S 02618W 5417S 03217W 5617S 03757W 5700S 04316W 5806S 04814W 5954S 05247W 6116S 05655W 6132S 06032W 6042S 06337W 6040S 06559W 6150S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6005S 04939W 21X12NM A81 5835S 05021W 28X25NM A76C 5338S 02955W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5915S 05027W 5X3NM ICEBERG2 6052S 05452W 5X3NM ICEBERG3 6100S 05359W 6X4NM ICEBERG4 6056S 05434W 2X1NM ICEBERG5 6051S 05416W 2X1NM 4.ICEBERGS AREA A5614S 02000W 4800S 02000W 5300S 03600W 5620S 03600W B5620S 03600W 5300S 03600W 5400S 05000W 5945S 05000W C5945S 05000W 5700S 05000W 6000S 06716W 6240S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-27
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SE 3/4 VEER SECTOR S 5/4 WITH GUSTS BY 26/1200 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 5/4 VEER NE 4 BY 26/1500 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: SE 3/4 VEER SECTOR S 5/4 WITH GUSTS BY 26/1200 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 5/4 VEER NE 4 BY 26/1500 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
GERLACHE STRAIT : SECTOR S 3/4 BACK SECTOR E 4/3 BY 26/1200 PROB OF FOG AND MIST IN PATCHES IMPR STARTING EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
MARGARITA BAY : SECTOR E 4/3 BACK NE 4/3 BY 26/1500 PROB OF MIST VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : SE 3/4 BACK SECTOR E 4/5 BY 26/0600 PROB OF FOG AND MIST IN PATCHES WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SE 8/7 WITH GUSTS BACK SECTOR E 6/5 BY 26/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR S 3/4 BACK SE 4/3 BY 26/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 3/4 VEER SECTOR S 4 BY 26/1500 PROB OF FOG AND MIST IN PATCHES SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 64S: NW 4/5 BACK SECTOR W 3/4 BY 26/1500 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 3/4 BACK SW 4/3 BY 26/1800 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 7/8 GUST WITH 9 INTENSITY VEER SECTOR S 7/5 BY 26/1500 PROB OF MIST BLIZZARD PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE=