1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-01, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 358: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SECTOR E
WITH GUST BETWEEN 45S-50S AND 35W-50W UNTIL 02/0900
WARNING 357: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SECTOR N
WITH GUST BETWEEN 35S-45S AND 20W-50W
WARNING 356: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 45S-50S AND 20W-35W UNTIL 01/1800
WARNING 354: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W) UNTIL 02/0900
PART 2 GENERAL SYNOPSIS AT 09:00UTC
311400 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 6102S 051 58W
21X12NM A81 6020S 052 34W 28X25NM A76C 52 27S 03104W 16X6NM 3.ICEBERGS SMALLER
THAN 10NM ICEBERG1 5934S 05053W 2X1NM 4.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 996HPA 44S 51W MOV E DPN EXTENDS CFNT AT 44S 51W 39S 51W 34S 54W
CFNT AT 52S 21W 50S 27W 47S 38W MOV E
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-2
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 3/4 PROB OF SH RAIN VIS MODERATE OCNL POOR
OUTER RIO DE LA PLATA: SECTOR S 3/4 PROB OF SH RAIN VIS MODERATE OCNL POOR
URUGUAY SOUTH EAST COASTS: SECTOR S 3/4 WITH GUSTS PROB OF SH RAIN VIS MODERATE
OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 4/5 WITH GUSTS VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SW 4/5 WITH GUSTS VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SW 4/5 WITH GUSTS VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SW 4/5 WITH GUSTS VEER SECTOR N 5/6 BY
2/0000 VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR E 4/5 WITH GUSTS BACK NE 5/6 WITH
GUSTS BY 2/0900 PROB OF RAIN RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR E 4/5 PROB OF RAIN RAIN AND SNOW
MIXTURE VIS GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: SECTOR E 5/6 WITH GUSTS VIS GOOD OCNL MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR N 8 WITH GUSTS PROB OF SH
RAIN VIS VERY POOR
REST OF THE AREA: SECTOR N 8 WITH GUSTS BACK SECTOR W 4/5 BY 2/0000 PROB OF SH
RAIN VIS VERY POOR TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR N 8 WITH GUSTS PROB
OF RAIN STORMS VIS VERY POOR
E OF 35 - S OF 45S: SECTOR W 8 WITH GUSTS BACK SECTOR S 6/7 WITH GUSTS BY
01/1800 PROB OF RAIN STORMS VIS VERY POOR
REST OF THE AREA: SECTOR E 8 WITH GUSTS BACK SECTOR S 6/7 WITH GUSTS BY 2/0900
PROB OF RAIN STORMS VIS VERY POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR N 8 WITH
GUSTS BACK SECTOR W 6/7 WITH GUSTS BY 2/0000 PROB OF SH RAIN VIS VERY POOR
W OF 50 - N OF 45S: SECTOR W 5/6 WITH GUSTS BACK SECTOR S 6/7 WITH GUSTS BY
2/0900 PROB OF ISOL RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR E 8 WITH GUSTS BACK SECTOR S 5/6 WITH GUSTS BY 2/0900
PROB OF SH RAIN VIS VERY POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 8 WITH GUSTS DECR 5/7 WITH
GUSTS BY 2/0900 PROB OF ISOL SNOW FALL VIS VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR E 5/6 WITH GUSTS BACK
SECTOR S 4/5 WITH GUSTS BY 01/2100 VIS MODERATE TO GOOD
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS VEER SECTOR S 4/5 BY 2/0000 VIS
MODERATE TO GOOD
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 4/5 VIS GOOD
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 01, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1030/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR S WITH GUST IN 60S-65S 38W-30W UNTIL 01/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 1002HPA 64S 55W MOV E DPN
HIGH 1024HPA 63S 79W MOV E WKN EXTENDS RIDGE AT 63S 79W 62S 72W 60S 68W MOV E
HIGH 1006HPA 69S 54W MOV E WKN
311400 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 6102S 051 58W 21X12NM A81 6020S 052 34W 28X25NM A76C 52 27S 03104W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5934S 05053W 2X1NM 4.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 12:00 UTC VALID UNTIL 12:00 UTC 2026-08-2
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 5/6 WITH GUSTS DECR SW 5/4 BY 01/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 6/7 WITH GUSTS VEER SECTOR W 5 BY 2/0300 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 5/6 WITH GUSTS DECR SW 5/4 BY 01/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 6/7 WITH GUSTS VEER SECTOR W 5 BY 2/0300 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
GERLACHE STRAIT : SE 4/3 VEER SECTOR S 4 BY 2/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE NIGTH VIS POOR TO MODERATE
MARGARITA BAY : SECTOR N 3/4 VEER NE 4/5 BY 2/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
EREBUS Y TERROR GULF : SW 4/5 INCR SW 6/7 WITH GUSTS BY 01/2100 PROB OF FOG AND MIST IN PATCHES WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR E 3/4 BACK NE 4/2 BY 01/2100 PROB OF MIST VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NW 5/6 WITH GUSTS BACK SECTOR W 4/5 BY 2/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS EVENING VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 4/5 VEER NW 5 BY 2/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA W OF 40W: NW 3/5 WITH GUSTS BACK SW 5/4 BY 01/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR S 4/5 WITH GUSTS VEER SW 5 BY 2/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 4/3 BACK SE 4/5 BY 01/1800 PROB OF MIST VIS MODERATE TO GOOD=