1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-28, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 395: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST BETWEEN 40S-50S AND 20W-40W UNTIL 29/0900
WARNING 394: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST BETWEEN 35S-40S AND 30W-40W UNTIL 29/0000
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1011HPA 37S 56W MOV E NC EXP 37S 54W BY 29/1200
LOW 993HPA EXP 59S 47W BY 29/1200
LOW 993HPA 43S 41W MOV SE DPN EXP 50S 22W BY 28/1200 EXTENDS CFNT AT 43S 41W 36S
44W 31S 51W MOV E
LOW 981HPA 56S 40W MOV E NC EXP 50S 22W BY 28/1200
271400 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 5949S 04956W 21X12NM
A81 5844S 04957W 28X25NM A76C 5344S 02946W 16X6NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 5911S 05042W 5X3NM ICEBERG2 6047S 05440W 5X3NM ICEBERG3 6058S 05328W
6X4NM ICEBERG4 6055S 05357W 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 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-29
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 4/5 FOG MIST DISSIPATING VIS MODERATE TO GOOD
OUTER RIO DE LA PLATA: SECTOR E 4/5 FOG MIST DISSIPATING VIS MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: SECTOR E 4/5 FOG MIST DISSIPATING VIS MODERATE TO
GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 3/4 VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR W 4/5 WITH GUSTS VEER SECTOR N
BY 29/0000 VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 4/5 WITH GUSTS VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 5/6 WITH GUSTS VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 4/5 WITH GUSTS BACK SECTOR S WITH
GUSTS BY 28/0300 VIS GOOD
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 3/4 BACK SECTOR S VIS GOOD
ISLAS MALVINAS COASTS: SECTOR N 3/4 PROB OF RAIN TOWARDS EARLY MORNING VIS GOOD
TO MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR N 4/5 INCR 6/7 GUST WITH 8
INTENSITY BY 28/1800 VIS MODERATE TO POOR OCNL VERY POOR
W OF 30 - E OF 40W: SECTOR N 8 WITH GUSTS DECR 6/7 GUST WITH 8 INTENSITY BY
29/0000 PROB OF SH RAIN VIS VERY POOR
REST OF THE AREA: SECTOR S 4/5 WITH GUSTS PROB OF ISOL SH RAIN VIS GOOD TO
MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR N 8 WITH GUSTS BACK SECTOR W
5/6 WITH GUSTS BY 29/0900 PROB OF SH RAIN VIS VERY POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR W 4/5 WITH GUSTS PROB OF ISOL
RAIN VIS GOOD OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR W 5/6 WITH GUSTS DECR
4/5 WITH GUSTS BY 29/0000 PROB OF SH RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR S 4/5 WITH GUSTS PROB OF ISOL RAIN VIS GOOD OCNL
MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR W 4/5 WITH GUSTS ISOL RAIN VIS
GOOD OCNL MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 4/5 WITH GUSTS VIS GOOD
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 28, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 987HPA 61S 65W MOV E WKN
HIGH 994HPA 64S 55W MOV E WKN
LOW 991HPA 70S 75W MOV E WKN
HIGH 1000HPA 68S 90W MOV E WKN
271400 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 5949S 04956W 21X12NM A81 5844S 04957W 28X25NM A76C 5344S 02946W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5911S 05042W 5X3NM ICEBERG2 6047S 05440W 5X3NM ICEBERG3 6058S 05328W 6X4NM ICEBERG4 6055S 05357W 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 2026-08-29
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR E 4/5 VEER SE 3/4 BY 28/0900 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SE 4/5 BACK SECTOR E 3/4 BY 28/0900 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS W OF 60W: SECTOR E 4/5 VEER SE 3/4 BY 28/0900 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SE 4/5 BACK SECTOR E 3/4 BY 28/0900 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : NE 3/4 VEER SECTOR E 4/3 BY 28/1500 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
MARGARITA BAY : NE 4/3 VEER SECTOR E 4/3 BY 28/1800 PROB OF MIST VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : NW 3/4 BACK SECTOR S 4/4 BY 28/1200 PROB OF MIST IMPR TOWARDS MORNING VIS MODERATE TO GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR E 4/3 VEER SECTOR S 4/3 BY 28/1200 PROB OF FOG AND MIST IN PATCHES IMPR STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 3/4 VEER SECTOR W 4/3 BY 28/1500 PROB OF MIST IMPR TOWARDS NOON VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 3/4 BACK SECTOR S 4/3 BY 28/0900 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: SE 5/4 VEER SECTOR S 4/3 BY 28/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR GRADUALLY TOWARDS MORNING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 7 GUST WITH 8 INTENSITY BACK SECTOR S 5/6 WITH GUSTS BY 28/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE NIGTH VIS GOOD TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 7 GUST WITH 8 INTENSITY BACK SECTOR E 5/4 BY 28/0900 PROB OF MIST PROB OFCOASTAL BLIZZARD IMPR STARTING EARLY MORNING VIS VERY POOR TO MODERATE=