1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-12, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 376: STRONG BARIC GRADIENT ON WILL PROVOKE WINDS FORCE 8 FROM SW BETWEEN
40S-50S 40W-50W FROM 12/0300
WARNING 375: STRONG BARIC GRADIENT ON PROVOKES WINDS FORCE 8 FROM SW WITH GUST
IN ISLAS MALVINAS COASTS BETWEEN 50S-55S 50W-60W UNTIL 12/1200
WARNING 367: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SW WITH
GUST BETWEEN 35S-45S AND 20W-40W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
111400 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 6057S 05323W 21X12NM
A81 5911S 05112W 28X25NM A76C 5248S 03049W 16X6NM 3.ICEBERGS SMALLER THAN 10NM
D33C 6129S 05335W 9X5NM ICEBERG1 6130S 05248W 5X3NM ICEBERG2 6119S 05254W 5X3NM
ICEBERG3 6044S 05201W 6X4NM 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
HIGH 1031HPA 39S 58W MOV S WKN EXP 46S 58W BY 13/0000
CFNT AT 46S 26W 44S 32W 43S 37W MOV NE
LOW 996HPA 57S 51W MOV NE DPN EXP 46S 28W BY 13/0000
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-13
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 4 PROB OF DRIZZLE STARTING EARLY MORNING VIS GOOD TO
MODERATE
OUTER RIO DE LA PLATA: SE 4 PROB OF DRIZZLE STARTING EVENING VIS GOOD TO
MODERATE
URUGUAY SOUTH EAST COASTS: SE 3/4 PROB OF RAIN STARTING EVENING VIS GOOD TO
MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 3/4 VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 3/4 VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SW 4 BACK S 4 BY 12/2100 PROB OF MIST
FOG PATCHES TOWARDS EVENING DISSIPATING VIS MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 5/4 VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 6/5 BACK NW 4/5 WITH GUSTS BY
12/1800 VIS GOOD OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 7/6 GUST WITH 8 INTENSITY VEER
SECTOR W 5 WITH GUSTS BY 12/1800 PROB OF ISOL SNOW FALL STARTING EARLY MORNING
IMPR VIS POOR TO MODERATE
ISLAS MALVINAS COASTS: SW 8/7 WITH GUSTS DECR 5 BY 12/1200 PROB OF SH OF SNOW
TOWARDS EVENING IMPR VIS POOR TO MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SW 8/7 WITH GUSTS PROB OF SH RAIN
VIS VERY POOR
W OF 40 - E OF 50W: SW 6/7 GUST WITH 8 INTENSITY PROB OF SH SPELLS OF GOOD
WEATHER VIS MODERATE
REST OF THE AREA: SW 4/6 WITH GUSTS UNSTABLE VIS GOOD OCNL MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SW 8 WITH GUSTS PROB OF SH
OF SNOW RAIN VIS VERY POOR
E OF 30 - S OF 45S: SW 6 WITH GUSTS PROB OF SH OF SNOW VIS POOR
REST OF THE AREA: SECTOR S 6/7 GUST WITH 8 INTENSITY PROB OF RAIN SNOW FALL VIS
VERY POOR TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SW 7/8 WITH GUSTS PROB OF SH
OF SNOW RAIN VIS POOR
REST OF THE AREA: SECTOR S 6/7 GUST WITH 8 INTENSITY PROB OF SH RAIN AND SNOW
MIXTURE VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR S 5 WITH GUSTS PROB OF
ISOL SNOW FALL VIS MODERATE
REST OF THE AREA: SECTOR S 6 WITH GUSTS PROB OF SNOW FALL VIS POOR TO
MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR S 6/7 GUST WITH 8
INTENSITY PROB OF SH OF SNOW SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
W OF 50 - N OF 55S: SW 8/10 WITH GUSTS DECR 5 WITH GUSTS BY 12/1500 PROB OF SH
RAIN AND SNOW MIXTURE TOWARDS THE END OF THE PERIOD IMPR VIS VERY POOR TO
MODERATE
REST OF THE AREA: SW 6 WITH GUSTS PROB OF SH OF SNOW TOWARDS EVENING IMPR VIS
MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 7/6 GUST WITH 8 INTENSITY VEER
SECTOR W 5 WITH GUSTS BY 12/1800 PROB OF SH RAIN AND SNOW MIXTURE SPELLS OF GOOD
WEATHER VIS MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 12, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1047/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-65S 90W-75W UNTIL 12/1800
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 1002HPA 63S 53W MOV E DPN
LOW 1005HPA 62S 62W MOV E WKN
RIDGE 60S 75W 65S 76W 70S 76W MOV E INTSF
111400 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 6057S 05323W 21X12NM A81 5911S 05112W 28X25NM A76C 5248S 03049W 16X6NM 3.ICEBERGS SMALLER THAN 10NM D33C 6129S 05335W 9X5NM ICEBERG1 6130S 05248W 5X3NM ICEBERG2 6119S 05254W 5X3NM ICEBERG3 6044S 05201W 6X4NM 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 00:00 UTC VALID UNTIL 00:00 UTC 2026-08-13
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 5/7 WITH GUSTS VEER SECTOR W 5/4 WITH GUSTS BY 12/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR S 4/5 WITH GUSTS VEER SECTOR W 3/4 BY 12/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS : SECTOR S 4/5 WITH GUSTS VEER SECTOR W 3/4 BY 12/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : SW 4/5 BACK SE 4/3 BY 12/1500 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
MARGARITA BAY : SECTOR N 3/4 VEER NE 4/3 BY 12/1500 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
EREBUS Y TERROR GULF : SECTOR N 3/4 VEER NE 3 BY 12/1500 PROB OF FOG AND MIST IN PATCHES WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 3/4 WITH GUSTS VEER NW 6/7 GUST WITH 8 INTENSITY BY 12/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR DURING THE EVENING VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 4/5 WITH GUSTS VEER SECTOR N 4 WITH GUSTS BY 12/0600 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 3/4 VEER NE 4/4 BY 12/1500 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: SW 7/5 WITH GUSTS VEER SECTOR W 6/5 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SW 5/6 WITH GUSTS DECR SW 4 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 5/4 WITH GUSTS BACK SECTOR E 4 BY 12/1500 PROB OF MIST PROB OFISOL SNOW FALL VIS MODERATE TO GOOD=