1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 03, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1031/2026 STRONG BARIC GRADIENT SOUTHERN WEDDELL SEA NORTHERN WEDDELL SEA MOV NE DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST IN 65S-71S 50W-40W FROM 03/1500 UNTIL 04/0600
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 1006HPA 67S 54W MOV E DPN
HIGH 1026HPA 65S 78W MOV NE INTSF
RIDGE 68S 48W 71S 47W 74S 48W MOV E WKN
021400 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 6108S 052 49W 21X12NM A81 6002S 051 48W 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 2026-08-4
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 5/4 WITH GUSTS DECR SECTOR W 4 BY 3/1500 PROB OF MIST VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 4/5 WITH GUSTS BACK SW 3/3 BY 3/1500 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 60W: SW 5/4 WITH GUSTS DECR SECTOR W 4 BY 3/1500 PROB OF MIST VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 4/5 WITH GUSTS BACK SW 4/3 BY 3/1500 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
GERLACHE STRAIT : SECTOR S 4/3 BACK SE 3 BY 3/1500 PROB OF FOG AND MIST IN PATCHES IMPR DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
MARGARITA BAY : SECTOR N 3/4 VEER NE 4/3 BY 3/1200 PROB OF MIST VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 4/5 WITH GUSTS BACK SECTOR S 6/5 WITH GUSTS BY 3/1200 PROB OF MIST VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR E 4/5 BACK NE 4 BY 3/1500 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 4/5 WITH GUSTS VEER SECTOR N 3/5 BY 02/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NOON VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NW 4/5 VEER SECTOR N 5 BY 3/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
NORTHERN WEDDELL SEA N OF 64S: SW 5/4 WITH GUSTS VEER NW 4/3 BY 3/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE MORNING VIS GOOD TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SW 4/3 VEER NW 4/5 WITH GUSTS BY 3/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE MORNING VIS GOOD TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 4/3 VEER SE 4/5 WITH GUSTS BY 02/0900 PROB OF MIST VIS MODERATE TO GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-3, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 359: LOW 993HPA AT 58S 35W MOV NE DEEPENING EXPECTED BY 04/0000 PROVOKES
WINDS FORCE 9 AROUND ITSELF WITH GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W)
BETWEEN 45S-50S AND 20W-40W
WARNING 357: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 WITH GUST
BETWEEN 35S-40S AND 20W-30W UNTIL 03/0900
PART 2 GENERAL SYNOPSIS AT 21:00UTC
021400 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 6108S 052 49W
21X12NM A81 6002S 051 48W 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
LOW 993HPA MOV NE DPN EXP BY 04/0000
LOW 1005HPA 45S 65W MOV SE WKN EXP 48S 64W BY 04/0000 EXTENDS CFNT AT PENINSULA
DE VALDES COASTS MOV E
HIGH 1026HPA 49S 51W MOV E INTSF EXP 40S 38W BY 04/0000
CFNT AT 42S 23W 41S 30W 39S 40W MOV NE
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-4
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 PROB OF MIST DURING THE EARLY MORNING NEXT
ISOL RAIN STARTING EVENING VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: SECTOR E 4 PROB OF MIST DURING THE EARLY MORNING NEXT
ISOL RAIN STARTING EVENING VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR E 4 DECR VRB 3 BY 3/2100 PROB OF MIST DURING
THE EARLY MORNING NEXT RAIN STORMS STARTING EVENING VIS GOOD TO MODERATE OCNL
POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 5 WITH GUSTS DECR VRB 4/3 BY
3/0600 PROB OF ISOL SH RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 5 WITH GUSTS BACK SECTOR W
BY 3/1200 LOW PROB OF ISOL RAIN STARTING EVENING VIS GOOD TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 5/4 WITH GUSTS VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 5/6 WITH GUSTS DECR 4 BY 3/2300
PROB OF RAIN IMPR STARTING EVENING VIS MODERATE TO GOOD
SOUTH PATAGONIA COASTS(48S - 54S) N OF 51S: NE 7/6 GUST WITH 8 INTENSITY VEER
SECTOR S BY 3/2100 PROB OF HVY RAIN VIS POOR
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: NE 7/6 WITH GUSTS VEER E 5
BY 3/2100 PROB OF RAIN NEXT HVY RAIN VIS POOR OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): NE 6/5 WITH GUSTS PROB OF RAIN AND SNOW
MIXTURE VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: NE 5/6 WITH GUSTS VEER E PROB OF RAIN STARTING EARLY
MORNING VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 8 WITH GUSTS BACK SECTOR S 7/6
GUST WITH 8 INTENSITY BY 3/0900 PROB OF RAIN NEXT ISOL RAIN VIS VERY POOR TO
POOR OCNL MODERATE
W OF 30 - E OF 40W: SECTOR S 7/6 GUST WITH 8 INTENSITY DECR VRB 4/3 BY 3/1500
PROB OF RAIN IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE OCNL GOOD
W OF 40 - E OF 50W: VRB 4/3 INCR SECTOR N 5 WITH GUSTS BY 3/2100 VIS GOOD
REST OF THE AREA: SECTOR N 5/4 DECR VRB 3 BY 3/2100 PROB OF ISOL SH RAIN
STARTING EVENING VIS GOOD TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR S 7/6 GUST
WITH 8 INTENSITY VEER SECTOR W 7 GUST WITH 8 INTENSITY BY 3/1800 PROB OF RAIN
AND SNOW MIXTURE VIS POOR OCNL VERY POOR
E OF 30 - S OF 45S: SECTOR S 7 GUST WITH 8 INTENSITY VEER SECTOR W 8/9 WITH
GUSTS BY 3/0600 BACK SW BY 3/1800 PROB OF SNOW FALL VIS VERY POOR TO POOR
W OF 30 - N OF 45S: SECTOR S 6 WITH GUSTS DECR VRB 4/3 BY 3/0900 PROB OF RAIN
AND SNOW MIXTURE IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
REST OF THE AREA: SECTOR S 5 VEER W 7/8 WITH GUSTS BY 3/0600 BACK SW 7/6 WITH
GUSTS BY 3/1800 PROB OF SNOW FALL VIS VERY POOR TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR E 5 DECR
VRB 3 BY 3/0900 INCR SECTOR N 5 BY 3/2100 LOW PROB OF ISOL RAIN STARTING EARLY
MORNING VIS GOOD OCNL MODERATE
E OF 50 - S OF 45S: SW 5 DECR VRB 3 BY 3/1500 LOW PROB OF RAIN AND SNOW MIXTURE
IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
W OF 50 - N OF 45S: SECTOR N 5 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE
REST OF THE AREA: SECTOR E 7 GUST WITH 8 INTENSITY PROB OF RAIN VIS POOR OCNL
VERY POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 57S: W 9 WITH GUSTS BACK SW BY
3/0900 PROB OF SNOW FALL VIS VERY POOR
E OF 30 - S OF 57S: SECTOR S 6/7 GUST WITH 8 INTENSITY INCR 8 WITH GUSTS BY
3/1800 PROB OF SNOW FALL VIS VERY POOR TO POOR
REST OF THE AREA: SW 8/7 WITH GUSTS BACK S BY 3/0600 VEER SECTOR W 6 WITH GUSTS
BY 3/2100 PROB OF SNOW FALL VIS VERY POOR TO POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR S 7/6 GUST WITH 8
INTENSITY BACK SECTOR W BY 3/2100 PROB OF RAIN SNOW FALL VIS POOR OCNL VERY
POOR
W OF 50 - N OF 55S: VRB 4/3 INCR SECTOR E 6/7 GUST WITH 8 INTENSITY BY 3/2100
LOW PROB OF ISOL SNOW FALL WORSENING TOWARDS THE END OF THE PERIOD VIS MODERATE
OCNL GOOD TO POOR
REST OF THE AREA: SW 6 WITH GUSTS DECR VRB 4/3 BY 3/2100 PROB OF ISOL SNOW FALL
VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): VRB 4 INCR SECTOR N 5/6 WITH GUSTS BY 3/0300
PROB OF ISOL SNOW FALL STARTING EARLY MORNING VIS GOOD TO MODERATE
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