1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-4, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 359: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SW WITH GUST
BETWEEN 45S-60S AND 20W-30W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1028HPA 44S 39W MOV E EXTENDS RIDGE AT 50S 47W 58S 59W 60S 70W MOV E
LOW 1006HPA SOUTH PATAGONIA COASTS MOV E NC EXTENDS CFNT AT 40S 54W 45S 53W 50S
60W MOV E ASOCIATED WITH OFNT AT 50S 60W 50S 67W 46S 62W
031400 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 6109S 053 04W
21X12NM A81 5956S 051 31W 28X25NM A76C 52 23S 03114W 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 2026-08-5
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 5 PROB OF ISOL RAIN IMPR PROB OFISOL MIST VIS GOOD
OCNL MODERATE
OUTER RIO DE LA PLATA: SE 5 PROB OF ISOL RAIN IMPR PROB OFISOL MIST VIS GOOD
OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SE 5 PROB OF ISOL RAIN IMPR PROB OFISOL MIST VIS GOOD
OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR E 4 PROB OF ISOL RAIN IMPRISOL
MIST VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): NW 4/5 WITH GUSTS WORSENING WITH PROB
OF SH STARTING EVENING VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): NW 4/5 WITH GUSTS WORSENING WITH PROB
OF SH STARTING EVENING VIS GOOD OCNL MODERATE.
GOLFO DE SAN JORGE COASTS(45S - 48S): W 5 WITH GUSTS BACK SW 4/3 PROB OF ISOL
RAIN SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S) N OF 50S: VRB 5 WITH GUSTS VEER SW 5/4 PROB
OF DRIZZLE RAIN VIS MODERATE OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: W 5 WITH GUSTS VEER SW 5/4
PROB OF RAIN VIS POOR OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): NE 5/4 UNSTABLE LOW PROB OFISOL DRIZZLE VIS
GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: SECTOR E 6/5 WITH GUSTS PROB OF RAIN VIS MODERATE OCNL
POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR S 5/4 WITH GUSTS VEER VRB 3
BY 4/1200 PROB OF SH RAIN IMPR TOWARDS MORNING VIS MODERATE GOOD
E OF 45W: SECTOR N 4/5 WITH GUSTS WORSENING WITH PROB OF ISOL RAIN STORMS
STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
REST OF THE AREA: NE 4 VEER SE 4 BY 4/0900 AFTERWARDS E 3 PROB OF SH RAIN IMPR
TOWARDS THE END OF THE PERIOD VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - S OF 45S: SW 8/7 WITH GUSTS
VEER W 6 GUST WITH 8 INTENSITY BY 4/1500 PROB OF ISOL SNOW FALL VIS POOR OCNL
MODERATE
E OF 30 - N OF 45S: SW 6/5 GUST WITH 8 INTENSITY VEER SECTOR W 5/4 WITH GUSTS
BY 4/1200 PROB OF ISOL RAIN AND SNOW MIXTURE NXT ISOL RAIN VIS MODERATE OCNL
POOR
REST OF THE AREA: SW 5/4 VEER W 4 BY 04/0900 AFTERWARDS SECTOR N 4/6 WITH GUSTS
BY 04/1800 LOW PROB OF ISOL RAIN NXT PROB OF SH RAIN TOWARDS THE END OF THE
PERIOD VIS MODERATE OCNL GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR N 6/5 GUST WITH 8
INTENSITY BACK SECTOR W 4 BY 04/1500 PROB OF ISOL SH STORMS IMPR TOWARDS THE END
OF THE PERIOD VIS POOR MODERATE
REST OF THE AREA: NE 4/5 WITH GUSTS PROB OF DRIZZLE RAIN NXT SH RAIN SPELLS OF
GOOD WEATHER VIS MODERATE OCNL GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SW 8 WITH GUSTS DECR 7/6 GUST
WITH 8 INTENSITY BY 04/1800 PROB OF ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS
POOR OCNL MODERATE
REST OF THE AREA: SECTOR W 6 GUST WITH 8 INTENSITY BACK SECTOR S 5 WITH GUSTS
BY 04/2100 LOW PROB OF ISOL SNOW FALL VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR W 4 BACK
SECTOR E 4/5 WITH GUSTS BY 04/1200 WORSENING WITH PROB OF SH RAIN STARTING EARLY
MORNING VIS GOOD MODERATE
E OF 50 - S OF 55S: SW 5 WITH GUSTS BACK S 4/3 BY 04/1800 VIS GOOD
W OF 50 - N OF 55S: SECTOR E 6/5 WITH GUSTS PROB OF DRIZZLE RAIN SPELLS OF GOOD
WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: SW 4 BACK VRB 3 PROB OF ISOL DRIZZLE VIS MODERATE OCNL GOOD
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 4/3 PROB OF FOG MIST PROB OFISOL
SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 04, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1033/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA SOUTHERN WEDDELL SEA PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 62S-70S 50W-35W UNTIL 04/1200
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 984HPA 67S 35W MOV E DPN
HIGH 1020HPA 66S 77W MOV NE WKN
LOW 1010HPA 62S 60W MOV E DPN
031400 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 6109S 053 04W 21X12NM A81 5956S 051 31W 28X25NM A76C 52 23S 03114W 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 2026-08-5
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 4/5 WITH GUSTS BACK SECTOR S 3/4 BY 4/1500 PROB OF MIST VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 4/5 WITH GUSTS BACK SECTOR S 4/3 BY 4/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 4/5 WITH GUSTS BACK SECTOR S 3/4 BY 4/1500 PROB OF MIST VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 4/5 WITH GUSTS BACK SECTOR S 4/3 BY 4/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
GERLACHE STRAIT : SECTOR S 4/3 BACK SE 3 BY 03/2100 PROB OF FOG AND MIST IN PATCHES IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD
MARGARITA BAY : NE 3/4 VEER SECTOR E 4/3 BY 4/1200 PROB OF MIST VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 4/5 WITH GUSTS BACK SECTOR E 3/4 BY 4/1200 PROB OF MIST VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR E 4/5 WITH GUSTS BACK NE 4/3 BY 4/1500 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 3/4 VEER SECTOR N 4/5 BY 4/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS MORNING VIS GOOD OCNL POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NW 3/4 VEER SECTOR N 5 BY 4/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NOON VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SECTOR W 5/6 GUST WITH 8 INTENSITY BACK SW 7 GUST WITH 8 INTENSITY BY 4/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SW 6/8 WITH GUSTS BACK SW 5/4 WITH GUSTS BY 03/1500 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 4/5 BACK SECTOR E 5 WITH GUSTS BY 4/1200 PROB OF MIST VIS MODERATE TO GOOD=