1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-27, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 394: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR N
WITH GUST BETWEEN 50S-55S 30W-50W
WARNING 393: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST
PART 2 GENERAL SYNOPSIS AT 09:00UTC
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
LOW 981HPA 55S 53W MOV SE DPN EXTENDS CFNT AT 55S 53W 45S 52W 37S 57W
HIGH 1026HPA 36S 35W MOV E INTSF
LOW 987HPA 48S 66W MOV E WKN
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-28
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 4 BACK SECTOR E 3 PROB OF ISOL SH STORMS IMPR
TOWARDS EARLY MORNING VIS MODERATE TO GOOD
OUTER RIO DE LA PLATA: SECTOR S 4 BACK SECTOR E 3 PROB OF ISOL SH STORMS IMPR
TOWARDS EARLY MORNING VIS MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: SECTOR N 4/5 WITH GUSTS BACK SECTOR S 3/4 WITH GUSTS
PROB OF ISOL SH STORMS SPELLS OF GOOD WEATHER VIS MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 3 MIST FOG PATCHES DISSIPATING
PROB OFISOL SH RAIN IMPR TOWARDS EVENING VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR W 5/3 WITH GUSTS VIS GOOD OCNL
MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 6/8 WITH GUSTS VEER SECTOR N
4/3 VIS POOR TO GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 8/5 WITH GUSTS VEER SECTOR N 4
VIS POOR TO GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR E 3 WITH GUSTS VEER SECTOR S 3/4
VEER SECTOR N 3 PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS GOOD OCNL
MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 3/4 VEER SECTOR W 3 PROB OF ISOL
RAIN RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: SECTOR W 4 BACK SECTOR S 3 VEER SECTOR N 3 PROB OF ISOL
DRIZZLE SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR S 6/3 WITH GUSTS VEER SECTOR
N 3/6 WITH GUSTS PROB OF ISOL RAIN IMPR TOWARDS EARLY MORNING VIS MODERATE
E OF 40W: SECTOR N 3/8 WITH GUSTS PROB OF HVY RAIN STORMS SPELLS OF GOOD
WEATHER VIS MODERATE TO POOR
REST OF THE AREA: SECTOR N 8 WITH GUSTS BACK SECTOR S 4/3 PROB OF HVY RAIN
STORMS SPELLS OF GOOD WEATHER VIS POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR S 6 WITH GUSTS VEER
SECTOR N 6 WITH GUSTS PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE
REST OF THE AREA: SECTOR N 6/8 WITH GUSTS PROB OF HVY RAIN VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR N 8/6 WITH GUSTS BACK
SECTOR W 4 WITH GUSTS PROB OF HVY RAIN VIS POOR
REST OF THE AREA: SECTOR N 6/5 WITH GUSTS BACK SECTOR W 5 PROB OF ISOL RAIN
IMPR TOWARDS EVENING VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR N 8/6 WITH GUSTS PROB
OF HVY RAIN VIS POOR
REST OF THE AREA: SECTOR N 5/4 WITH GUSTS BACK SECTOR W 4 PROB OF ISOL SNOW
FALL VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR N 8/6 WITH
GUSTS BACK SECTOR W 5/4 WITH GUSTS PROB OF ISOL HVY RAIN VIS POOR
E OF 50 - S OF 55S: SECTOR N 6 WITH GUSTS BACK SECTOR S 3/5 WITH GUSTS PROB OF
ISOL RAIN SNOW FALL VIS MODERATE
W OF 50 - N OF 55S: SECTOR N 6 WITH GUSTS BACK SECTOR W 5/4 WITH GUSTS BACK
SECTOR S 3 PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE
REST OF THE AREA: SECTOR S 4/5 PROB OF ISOL RAIN SNOW FALL VIS MODERATE OCNL
GOOD
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 3/4 WITH GUSTS PROB OF ISOL RAIN
SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 27, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1108/2026 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SE WITH GUST IN 61S-65S 60W-53W UNTIL 28/0300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 983HPA 61S 56W MOV SW INTSF EXTENDS CFNT AT 61S 56W 63S 60W 63S 55W MOV SE
LOW 980HPA 61S 58W MOV SE INTSF
HIGH 1003HPA 69S 90W MOV E INTSF EXTENDS RIDGE AT 69S 90W 65S 80W 61S 78W MOV E
261400 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 2026-08-28
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SE 3/4 BACK SECTOR E 7 GUST WITH 8 INTENSITY BY 27/1200 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR E 4/5 VEER 7/8 WITH GUSTS BY 27/1800 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: SE 3/4 BACK SECTOR E 7 GUST WITH 8 INTENSITY BY 27/2100 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 REST OF THE AREA: SE 7/8 WITH GUSTS BACK SECTOR E 6/5 WITH GUSTS BY 28/0000 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NOON VIS VERY POOR TO MODERATE
GERLACHE STRAIT : NE 3/4 BACK SECTOR N 4/3 BY 28/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE NIGTH VIS GOOD TO MODERATE OCNL VERY POOR
MARGARITA BAY : NE 4/3 BACK SECTOR N 4/3 BY 28/0000 PROB OF MIST VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : SW 7/8 WITH GUSTS BACK SECTOR S 3/4 BY 28/0000 PROB OF FOG AND MIST IN PATCHES BLIZZARD PROB OFISOL SNOW FALL IMPR TOWARDS NIGTH VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SE 4/5 BACK SECTOR E 4/3 BY 28/0300 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR S 3/4 VEER SW 4/3 BY 27/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NOON VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 3/4 VEER SECTOR W 4/3 BY 28/0300 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: SECTOR N 3/4 VEER SE 4/5 BY 28/0000 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR TOWARDS NIGTH VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SW 4/5 INCR SW 7/8 WITH GUSTS BY 28/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 5/6 GUST WITH 8 INTENSITY INCR SE 7/8 WITH GUSTS BY 27/1200 PROB OF MIST BLIZZARD PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS MODERATE TO VERY POOR=