1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 25, AUGUST 2026.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 389: LOW 980HPA AT 45S 29W MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM
SW WITH GUST BETWEEN 35S-45S AND 20W-40W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 980HPA 45S 29W MOV E DPN EXTENDS OFNT54S 31W 46S 39W 40S 30W MOV E
HIGH 1024HPA 37S 54W MOV E NC EXP 38S 45W BY 26/1200
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 2026-08-26
COASTAL AREAS:
INNER RIO DE LA PLATA: NE 4 VIS GOOD
OUTER RIO DE LA PLATA: NE 6 WITH GUSTS VIS GOOD
URUGUAY SOUTH EAST COASTS: SECTOR E 4/5 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 4/5 WITH GUSTS PROB OF ISOL RAIN
SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 5/6 WITH GUSTS PROB OF ISOL
RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5/6 WITH GUSTS PROB OF ISOL
INTERMITTENT RAIN NXT PROB OF SH RAIN STARTING EARLY MORNING VIS MODERATE TO
POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 6/5 WITH GUSTS TEMPO VEER
SECTOR W PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 7/5 WITH GUSTS PROB OF ISOL RAIN
SPELLS OF GOOD WEATHER VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 4/5 WITH GUSTS BACK VRB 4 PROB OF
DRIZZLE RAIN NEXT IMPR DURING THE EARLY MORNING PROB OF FOG MIST DURING THE
MORNING VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR N 6/7 WITH GUSTS DECR 5 PROB OF RAIN SNOW FALL
SPELLS OF GOOD WEATHER VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR S 8 WITH GUSTS DECR 7/6 GUST
WITH 8 INTENSITY PROB OF SH RAIN VIS POOR TO MODERATE
NORTH AREA (35S- 40S AND 20W- 55W) REST OF THE AREA: VRB 5 WITH GUSTS PROB OF
MIST DRIZZLE VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR S 8 WITH GUSTS DECR 7
WITH GUSTS PROB OF INTERMITTENT SH OF RAIN SH OF SNOW VIS POOR TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR S 6/7 WITH GUSTS PROB OF SH
RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 6/5 WITH GUSTS PROB
OF ISOL RAIN SNOW FALL PROB OF MIST STARTING EARLY MORNING VIS MODERATE OCNL
POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) REST OF THE AREA: SECTOR N 6/7 WITH
GUSTS PROB OF RAIN SPELLS OF GOOD WEATHER VIS MODERATE TO POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR S 6/7 WITH GUSTS PROB
OF ISOL SNOW FALL VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) REST OF THE AREA: SECTOR S 5 WITH GUSTS
VEER SECTOR W LOW PROB OF ISOL SNOW FALL VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR S 5 WITH GUSTS VEER
SECTOR W LOW PROB OF ISOL SNOW FALL VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) REST OF THE AREA: SECTOR N 5/6 WITH
GUSTS PROB OF INTERMITTENT RAIN SNOW FALL SPELLS OF GOOD WEATHER PROB OF VIS
MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 5 WITH GUSTS VEER VRB 4 PROB OF
ISOL RAIN SNOW FALL SPELLS OF GOOD WEATHER PROB OF MIST TOWARDS MORNING VIS
MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 25, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1105/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SE WITH GUST IN 60S-64S 90W-80W UNTIL 26/0600
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 997HPA 68S 51W MOV E WKN
HIGH 1002HPA 67S 60W MOV E WKN
RIDGE 68S 90W 68S 80W 67S 78W MOV E WKN
WFNT AT 60S 80W 62S 75W 63S 70W MOV SE DPN
241400 UTC 1.SEA ICE LIMIT 5547S 02000W 5416S 02618W 5352S 03217W 5617S 03757W 5825S 04316W 5953S 04814W 6047S 05247W 6215S 05654W 6338S 06032W 6135S 06337W 6213S 06558W 6233S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6011S 04940W 21X12NM A81 5836S 05034W 28X25NM A76C 5334S 02956W 16X6NM 3.ICEBERGS SMALLER THAN 10NM D33C 6144S 05326W 9X5NM ICEBERG1 5919S 05022W 5X3NM ICEBERG2 6056S 05448W 5X3NM ICEBERG3 6123S 05404W 6X4NM ICEBERG4 6112S 05418W 2X1NM ICEBERG5 6058S 05430W 3X1NM 4.ICEBERGS AREA A5600S 02000W 4500S 02000W 5200S 04500W 6000S 04500W B5300S 04500W 6600S 04500W 6200S 06716W 6600S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-26
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT N OF 60S: NE 3/4 VEER SECTOR E 5/6 WITH GUSTS BY 25/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 5/4 VEER SECTOR N 5/6 WITH GUSTS BY 26/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EVENING VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS W OF 60W: NE 2/4 VEER SECTOR E 5/6 WITH GUSTS BY 25/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 5/4 VEER SECTOR N 5/6 WITH GUSTS BY 26/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EVENING VIS MODERATE TO POOR
GERLACHE STRAIT : SECTOR E 3/4 VEER NE 3/3 BY 25/1800 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR STARTING NOON VIS VERY POOR TO MODERATE
MARGARITA BAY : SECTOR N 4/3 VEER SECTOR E 4/3 BY 25/1800 PROB OF MIST VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : SW 3/4 BACK SECTOR E 4/5 BY 25/1800 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: SECTOR E 3/4 VEER SE 5/7 GUST WITH 8 INTENSITY BY 25/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SE 4/5 VEER SECTOR S 4/3 BY 25/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 3/4 WITH GUSTS VEER SECTOR W 4 BY 25/1800 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: SECTOR W 4/5 VEER NW 5/4 BY 25/1800 PROB OF FOG AND MIST IN PATCHES IMPR TOWARDS EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NE 3/4 BACK SECTOR N 4/3 BY 25/1800 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): NE 5/4 VEER SECTOR E 3/5 BY 25/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD=