1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-27, 00:00 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 BETWEEN 35S-50S AND 40W-50W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
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
LOW 984HPA 51S 59W MOV SE DPN EXTENDS CFNT AT 51S 59W 47S 57W 39S 61W
HIGH 1023HPA 36S 41W MOV E INTSF
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-28
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 4 BACK SECTOR S 5 WITH GUSTS BY 27/0600 PROB OF
STORMS IMPR TOWARDS NIGTH VIS MODERATE OCNL POOR
OUTER RIO DE LA PLATA: SECTOR N 4 BACK SECTOR S 5 WITH GUSTS BY 27/0600 PROB OF
STORMS IMPR TOWARDS NIGTH VIS MODERATE OCNL POOR
URUGUAY SOUTH EAST COASTS: SECTOR N 6/5 BACK SECTOR S 5/4 BY 27/1200 PROB OF
STORMS VIS MODERATE OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 5 BACK SECTOR S 5 BY 27/0900
PROB OF RAIN IMPR TOWARDS EVENING VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 5/6 WITH GUSTS BACK SECTOR W
4/4 WITH GUSTS BY 27/1500 VIS MODERATE TO GOOD
PENINSULA DE VALDES COASTS(41S - 45S): N 7 GUST WITH 8 INTENSITY BACK SECTOR W
6/5 WITH GUSTS BY 27/1200 VIS MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): N 6 GUST WITH 8 INTENSITY BACK SECTOR W
5 WITH GUSTS BY 27/1200 VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): VRB 4 VEER SECTOR S 4 BY 27/1200 VIS GOOD
OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 4/5 WITH GUSTS LOW PROB OF RAIN VIS
GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: SECTOR W 5 WITH GUSTS BACK SECTOR S 4 BY 27/1800 LOW PROB
OF RAIN DURING THE EARLY MORNING NEXT IMPR VIS MODERATE TO GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR S 6/5 WITH GUSTS PROB OF
STORMS VIS POOR TO MODERATE
W OF 50W: SECTOR N 6 WITH GUSTS BACK SECTOR W 4 BY 27/1500 PROB OF STORMS
STARTING EVENING VIS MODERATE TO POOR OCNL VERY POOR
REST OF THE AREA: SECTOR N 5/6 INCR 8 BY 27/0600 PROB OF RAIN VIS GOOD TO
POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SW 6 WITH GUSTS VEER W BY
27/2100 VIS MODERATE TO GOOD
REST OF THE AREA: SW 5 WITH GUSTS VEER SECTOR N 6 WITH GUSTS BY 27/1200 PROB OF
RAIN FROM 27/1800 VIS GOOD TO MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR N 8 WITH GUSTS PROB
OF RAIN VIS VERY POOR
REST OF THE AREA: SECTOR N 7/6 GUST WITH 8 INTENSITY BACK SECTOR W 5/4 BY
27/1800 PROB OF RAIN IMPR TOWARDS EVENING VIS POOR TO GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SW 6 VEER NW 6/7 WITH GUSTS BY
27/1200 PROB OF RAIN AND SNOW MIXTURE FROM 27/2100 VIS GOOD TO MODERATE
REST OF THE AREA: SECTOR W 5/6 VEER SECTOR N 7/8 BY 27/1200 PROB OF RAIN AND
SNOW MIXTURE VIS VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR N 8 WITH GUSTS DECR 6
WITH GUSTS BY 27/1500 PROB OF RAIN AND SNOW MIXTURE VIS VERY POOR
REST OF THE AREA: SECTOR N 6 WITH GUSTS BACK SECTOR S 5 BY 27/0900 PROB OF RAIN
AND SNOW MIXTURE VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 4 VEER SECTOR W 4/5 BY 27/0600 LOW
PROB OF RAIN AND SNOW MIXTURE VIS MODERATE
-----------------------------------------------------------------
NNNN=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 27, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1107/2026 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MAR DE LA FLOTA COASTS MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SE WITH GUST IN 61S-65S 60W-53W FROM 27/1200 UNTIL 28/0300
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 985HPA 61S 66W MOV SE DPN EXTENDS CFNT AT 61S 66W 63S 60W 63S 55W MOV SE
LOW 992HPA 60S 52W MOV SE DPN
RIDGE 68S 85W 65S 80W 62S 75W MOV E WKN
RIDGE 67S 50W 63S 40W 60S 35W MOV E WKN
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 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-28
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NE 3/4 VEER SE 4 BY 27/0900 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: NE 4/5 VEER SE 4/3 BY 27/1200 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NOON VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: NE 3/4 VEER SE 4 BY 27/0900 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: NE 4/5 VEER SE 4/3 BY 27/1200 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 : SECTOR E 3/4 BACK NE 4/3 BY 27/1200 PROB OF MIST VIS MODERATE TO GOOD
MARGARITA BAY : NE 4/3 VEER SECTOR E 4/2 BY 27/1500 PROB OF MIST VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : SECTOR E 3/4 VEER SW 7/8 WITH GUSTS BY 27/1200 PROB OF FOG AND MIST IN PATCHES BLIZZARD PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SE 5/6 WITH GUSTS BACK SECTOR E 5/4 BY 27/1500 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR S 3/4 BACK SE 4/3 BY 27/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NOON VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR S 3/4 VEER SW 4 BY 27/1500 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: NE 3/4 VEER SECTOR E 3/4 BY 27/1200 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
NORTHERN WEDDELL SEA REST OF THE AREA: NW 3/4 BACK SECTOR W 4/5 BY 27/0900 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING 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 27/1500 PROB OF MIST BLIZZARD PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR=