1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-26, 12:00 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 ON PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST BETWEEN 40S-50S AND 50W-60W FROM 26/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 987HPA 47S 67W MOV SE DPN EXP 55S 55W BY 27/0900 EXTENDS CFNT AT 49S 65W 44S
63W 37S 61W MOV NE ASOCIATED WITH OFNT AT 49S 65W 49S 69W 46S 68W
HIGH 1023HPA 40S 46W MOV NE INTSF EXP 35S 35W BY 27/1200
LOW 993HPA 58S 64W MOV E INTSF EXP 60S 55W BY 27/1200 EXTENDS CFNT AT 62S 68W
57S 60W 52S 58W MOV E
LOW 981HPA 46S 19W MOV E NC
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 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-27
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 3 VEER SECTOR S 3/4 PROB OF RAIN STORMS STARTING
NIGTH VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: NE 4/3 VEER SECTOR S 3/4 WITH GUSTS PROB OF RAIN STORMS
STARTING NIGTH VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR N 4/5 WITH GUSTS PROB OF RAIN STORMS STARTING
NIGTH MIST FOG PATCHES DISSIPATING VIS GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 4/3 VEER SECTOR S 3/4 WITH GUSTS
PROB OF RAIN STORMS VIS GOOD TO MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 6/5 WITH GUSTS BACK SECTOR W
5 WITH GUSTS HVY RAIN STORMS VIS POOR OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 5/6 WITH GUSTS PROB OF RAIN
IMPR VIS MODERATE TO GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 5/6 WITH GUSTS PROB OF SH IMPR
VIS MODERATE TO GOOD
SOUTH PATAGONIA COASTS(48S - 54S): VRB 3 SECTOR W 4/5 WITH GUSTS MIST FOG
PATCHES DISSIPATING PROB OF SH RAIN AND SNOW MIXTURE VIS POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR E 3 MIST FOG PATCHES DISSIPATING PROB
OF SH RAIN AND SNOW MIXTURE VIS POOR
ISLAS MALVINAS COASTS: SECTOR N 5/4 WITH GUSTS BACK SECTOR W 4 PROB OF SNOW FALL
VIS POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SW 7/5 WITH GUSTS PROB OF SH VIS
POOR
E OF 40 - W OF 30W: SW 6 WITH GUSTS BACK VRB 4 PROB OF SH IMPR VIS POOR TO
GOOD
E OF 50 - W OF 40W: VRB 3 VEER SECTOR N 5/6 WITH GUSTS PROB OF RAIN STORMS
STARTING THE END OF THE PERIOD VIS GOOD TO POOR
REST OF THE AREA: SECTOR N 5/7 WITH GUSTS PROB OF HVY RAIN STORMS VIS GOOD TO
POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR S 7/6 WITH GUSTS PROB
OF SH RAIN SNOW FALL VIS POOR
REST OF THE AREA: SW 7/5 WITH GUSTS VEER SECTOR W 5 PROB OF SH IMPR VIS POOR TO
MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR N 6/7 WITH GUSTS PROB
OF SH RAIN VIS POOR
REST OF THE AREA: SECTOR N 7/8 WITH GUSTS DECR 5 PROB OF SH RAIN VIS POOR OCNL
MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 6/7 WITH GUSTS PROB OF SNOW
FALL VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR N 6/7 WITH GUSTS PROB
OF SNOW FALL VIS POOR
REST OF THE AREA: SECTOR N 6/7 WITH GUSTS VEER SECTOR W 6 PROB OF SNOW FALL VIS
POOR
DRAKE AREA (55S- 60S AND 60W- 67W): VRB 4 VEER SECTOR W 4/5 WITH GUSTS PROB OF
SNOW FALL VIS POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 26, 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 09:00UTC
LOW 990HPA 60S 65W MOV SE DPN EXTENDS WFNT AT 60S 65W 63S 55W 64S 50W MOV SE
LOW 993HPA 70S 67W MOV SE DPN
HIGH 1002HPA 68S 53W MOV E WKN
RIDGE 68S 85W 65S 78W 62S 72W MOV E WKN
WFNT AT 60S 90W 62S 82W 61S 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 12:00 UTC VALID UNTIL 12:00 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 26/1800 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 26/1800 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 W OF 60W: SE 3/4 VEER SECTOR S 5/4 WITH GUSTS BY 26/1800 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 26/1800 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
GERLACHE STRAIT : SECTOR S 3/4 BACK SECTOR E 4/3 BY 26/1800 PROB OF FOG AND MIST IN PATCHES IMPR STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
MARGARITA BAY : SECTOR E 4/3 BACK NE 4/3 BY 26/1800 PROB OF MIST VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : SECTOR E 3/4 VEER SE 4/5 BY 27/0000 PROB OF FOG AND MIST IN PATCHES SPELLS OF GOOD WEATHER DURING THE NOON VIS VERY POOR TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SE 8/7 WITH GUSTS BACK SECTOR E 6/5 BY 26/1800 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 TOWARDS NOON VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 3/4 VEER SECTOR S 4 BY 26/1800 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 26/1800 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
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 26/1800 PROB OF MIST BLIZZARD PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE=