1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-5, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 361: LOW 1008HPA AT 47S 44W MOV E DEEPENING EXPECTED 47S 25W BY 06/0000
WILL PROVOKE WINDS FORCE 8 WITH GUST BETWEEN 40S-47S 20W-35W FROM 05/1800
WARNING 359: STRONG BARIC GRADIENT EXPECTED BY 05/0300 PROVOKES WINDS FORCE 8
FROM SECTOR W WITH GUST BETWEEN 50S-55S AND 30W-20W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
041400 UTC 1.SEA ICE LIMIT 5803S 02000W 5605S 02618W 5702S 03217W 5731S 03757W
5737S 04317W 5926S 04814W 6027S 05248W 6203S 05655W 6333S 06033W 6409S 06337W
6408S 06559W 6257S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6110S 053 16W
21X12NM A81 5948S 051 13W 28X25NM A76C 52 39S 03049W 16X6NM 3.ICEBERGS AREA
A5820S 02000W 4600S 02000W 5300S 03800W 5805S 03800W B5805S 03800W 5300S 03800W
5800S 05000W 6040S 05000W C6040S 05000W 5800S 05000W 6300S 06716W 6620S 06716W
HIGH 1017HPA 37S 54W MOV E WKN EXP 37S 37W BY 06/0000
LOW 1014HPA 36S 45W MOV SE WKN EXP BY 06/0000
HIGH 1016HPA 57S 59W MOV E WKN EXP 57S 45W BY 06/0000
LOW 1008HPA 47S 44W MOV E DPN EXP 47S 25W BY 06/0000
LOW 1005HPA 45S 64W MOV SE DPN EXP 48S 45W BY 06/0000 EXTENDS CFNT AT PENINSULA
DE VALDES COASTS MOV NE EXP RINCON BAHIA BLANCA COASTS BY 05/1200
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-6
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 5/4 PROB OF MIST NXT DRIZZLE TOWARDS THE END OF
THE PERIOD VIS MODERATE OCNL GOOD
OUTER RIO DE LA PLATA: SECTOR E 5/4 PROB OF MIST NXT DRIZZLE TOWARDS THE END OF
THE PERIOD VIS MODERATE OCNL GOOD
URUGUAY SOUTH EAST COASTS: SECTOR E 5/4 PROB OF MIST NXT DRIZZLE TOWARDS THE END
OF THE PERIOD VIS MODERATE OCNL GOOD
MAR DEL PLATA COASTS(3617S - 3830S): VRB 4 PROB OF ISOL RAIN VIS MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 5 WITH GUSTS BACK SECTOR W
BY 5/0900 DECR VRB 3 BY 5/2300 PROB OF ISOL RAIN STORMS VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 6 WITH GUSTS BACK SECTOR S 6/5
BY 5/0600 DECR VRB 3 BY 5/2300 PROB OF ISOL SH RAIN SPELLS OF GOOD WEATHER VIS
MODERATE OCNL GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 5 WITH GUSTS PROB OF ISOL RAIN
VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 5 WITH GUSTS VEER SECTOR W BY
5/2300 PROB OF ISOL RAIN VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR E 4 BACK SECTOR N BY 5/0900 LOW PROB
OF ISOL RAIN VIS MODERATE OCNL GOOD
ISLAS MALVINAS COASTS: SECTOR E 6/5 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR W 4/5 WITH GUSTS VEER SECTOR
N 6/7 GUST WITH 8 INTENSITY BY 5/0300 BACK SECTOR W BY 5/2300 RAIN STARTING
EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
W OF 35 - E OF 50W: SECTOR N 6/7 GUST WITH 8 INTENSITY DECR VRB 4 BY 5/0900
PROB OF ISOL RAIN STORMS TOWARDS THE END OF THE PERIOD IMPR VIS MODERATE OCNL
POOR TO GOOD
REST OF THE AREA: VRB 4 LOW PROB OF ISOL RAIN TOWARDS THE END OF THE PERIOD VIS
GOOD TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 35 - N OF 37S: W 6 WITH GUSTS
VEER NW 7 GUST WITH 8 INTENSITY BY 5/1200 INCR 8 WITH GUSTS BY 5/1800 PROB OF
RAIN AND SNOW MIXTURE VIS MODERATE TO POOR
E OF 35 - S OF 47S: SECTOR W 7 GUST WITH 8 INTENSITY DECR VRB 4 BY 5/1200 INCR
SECTOR S 6 WITH GUSTS BY 5/1800 PROB OF RAIN AND SNOW MIXTURE VIS POOR OCNL VERY
POOR
W OF 35 - N OF 47S: SECTOR N 7 GUST WITH 8 INTENSITY BACK SECTOR W 7/6 GUST
WITH 8 INTENSITY BY 05/0900 PROB OF RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL
VERY POOR TO MODERATE
REST OF THE AREA: SECTOR N 6 WITH GUSTS BACK SW 7 GUST WITH 8 INTENSITY BY
05/0900 DECR VRB 4 BY 05/2300 PROB OF RAIN VIS MODERATE TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR W 5/6 WITH
GUSTS PROB OF RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD
E OF 50 - S OF 45S: SECTOR W 5 WITH GUSTS DECR VRB 4 BY 05/1500 INCR SECTOR S 5
WITH GUSTS BY 05/2300 PROB OF RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL
GOOD
W OF 50 - N OF 45S: NW 5/6 WITH GUSTS BACK W 6/5 WITH GUSTS BY 05/1500 PROB OF
RAIN TOWARDS EVENING IMPR VIS MODERATE TO GOOD
REST OF THE AREA: SECTOR W 5 WITH GUSTS BACK SECTOR S BY 05/1200 PROB OF ISOL
RAIN VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30 - N OF 55S: SECTOR W 8/7 WITH
GUSTS BACK SECTOR S 6 WITH GUSTS BY 05/1200 PROB OF SNOW FALL VIS VERY POOR TO
POOR
W OF 30 - N OF 55S: SECTOR W 6 DECR VRB 4 BY 05/0900 INCR SECTOR E 4/5 BY
05/2100 PROB OF RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS POOR OCNL
MODERATE
REST OF THE AREA: SW 6/5 WITH GUSTS PROB OF SNOW FALL VIS POOR OCNL MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 57S: SECTOR E 6/5 WITH GUSTS PROB
OF RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
REST OF THE AREA: VRB 4 INCR SECTOR W 5 BY 05/1800 PROB OF ISOL SNOW FALL VIS
MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 4/5 WITH GUSTS PROB OF RAIN AND
SNOW MIXTURE VIS MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 05, 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 1010HPA 61S 52W MOV E WKN
HIGH 1013HPA 67S 75W MOV E WKN
HIGH 1011HPA 65S 52W MOV NE WKN
LOW 1002HPA 61S 85W MOV E WKN
041400 UTC 1.SEA ICE LIMIT 5803S 02000W 5605S 02618W 5702S 03217W 5731S 03757W 5737S 04317W 5926S 04814W 6027S 05248W 6203S 05655W 6333S 06033W 6409S 06337W 6408S 06559W 6257S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6110S 053 16W 21X12NM A81 5948S 051 13W 28X25NM A76C 52 39S 03049W 16X6NM 3.ICEBERGS AREA A5820S 02000W 4600S 02000W 5300S 03800W 5805S 03800W B5805S 03800W 5300S 03800W 5800S 05000W 6040S 05000W C6040S 05000W 5800S 05000W 6300S 06716W 6620S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-6
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 3/4 BACK SECTOR E 3/4 BY 5/0900 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS GOOD TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 3/4 VEER SECTOR W 4/3 BY 5/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 60W: SW 3/4 BACK SECTOR E 3/4 BY 5/0900 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS GOOD TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 3/4 VEER SECTOR W 4/3 BY 5/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS MODERATE TO GOOD
GERLACHE STRAIT : SECTOR S 4/3 BACK SE 3 BY 5/1500 PROB OF FOG AND MIST IN PATCHES IMPR TOWARDS MORNING VIS VERY POOR TO MODERATE OCNL GOOD
MARGARITA BAY : NE 3/4 VEER SECTOR E 4/3 BY 5/1500 PROB OF MIST VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : NW 3/4 BACK SE 3/4 BY 5/1200 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 4/5 WITH GUSTS BACK NE 4/3 BY 5/1500 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR N 3/4 VEER SECTOR E 4/5 BY 5/1500 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 4/3 VEER NE 2 BY 5/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 64S: SW 3/4 VEER SECTOR W 5/6 BY 5/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS GOOD TO MODERATE OCNL POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SW 5/6 WITH GUSTS INCR SW 7 GUST WITH 8 INTENSITY BY 5/0900 PROB OF FOG AND MIST IN PATCHES WORSENING TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 4/5 WITH GUSTS BACK SECTOR E 4/4 WITH GUSTS BY 5/1500 PROB OF MIST VIS MODERATE TO GOOD=