1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-08-13, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 377: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SW WITH
GUST BETWEEN 40S-45S 20W-50W
WARNING 376: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 35S-40S AND 20W-40W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1029HPA 47S 64W MOV NE INTSF EXP 41S 54W BY 14/2100
LOW 984HPA 46S 33W MOV SE DPN EXTENDS CFNT AT 46S 33W 41S 36W 38S 45W MOV E
121400 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 6047S 05248W 21X12NM
A81 5911S 05114W 28X25NM A76C 5248S 03055W 16X6NM 3.ICEBERGS SMALLER THAN 10NM
D33C 6129S 05345W 9X5NM ICEBERG1 6132S 05303W 5X3NM ICEBERG2 6121S 05300W 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 2026-08-14
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 4 BACK SECTOR E BY 13/1200 PROB OF ISOL RAIN
STARTING EVENING VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: SECTOR S 4/5 WITH GUSTS BACK SECTOR E BY 13/1200 PROB OF
ISOL RAIN VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR S 4/5 WITH GUSTS BACK SECTOR E BY 13/1200 PROB
OF ISOL RAIN VIS GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 4/5 VEER SECTOR E 4 BY 13/1200
VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SE 4 BACK NE 4/5 WITH GUSTS BY
13/1800 VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 4/5 WITH GUSTS VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 4/5 WITH GUSTS VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 4/5 WITH GUSTS VIS GOOD.
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 6/5 WITH GUSTS DECR 4 BY 13/1800 VIS
MODERATE TO GOOD
ISLAS MALVINAS COASTS: SECTOR W 5 WITH GUSTS VIS GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR W 8 WITH GUSTS PROB OF RAIN
VIS VERY POOR
REST OF THE AREA: SECTOR S 7/5 WITH GUSTS BACK SECTOR E 5 BY 13/2100 VIS GOOD
OCNL MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SW 8 WITH GUSTS PROB OF RAIN
AND SNOW MIXTURE VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR S 6 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS
MODERATE TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SW 8 DECR 7/6 WITH
GUSTS BY 13/1200 PROB OF RAIN AND SNOW MIXTURE VIS VERY POOR TO POOR
E OF 50 - S OF 45S: SW 7/6 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS POOR
REST OF THE AREA: SECTOR S 6/5 WITH GUSTS VEER SECTOR W 5 BY 13/1800 VIS GOOD
OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SW 6/5 WITH GUSTS LOW PROB OF RAIN AND
SNOW MIXTURE IMPR STARTING EVENING VIS MODERATE TO GOOD
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR S 6 WITH GUSTS VEER SECTOR W BY
13/1200 PROB OF RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/5 WITH GUSTS LOW PROB OF RAIN AND
SNOW MIXTURE IMPR STARTING EVENING VIS MODERATE TO GOOD
-----------------------------------------------------------------
NNNN=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 12, AUGUST 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1048/2026 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 09:00UTC
LOW 999HPA 66S 85W MOV SE DPN
LOW 1001HPA 64S 54W MOV E WKN
RIDGE 60S 68W 63S 68W 66S 67W 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 12:00 UTC VALID UNTIL 12:00 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 12/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE NOON 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 12/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE NIGTH VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS W OF 60W: SW 5/7 WITH GUSTS VEER SECTOR W 5/4 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE NOON VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 4/5 WITH GUSTS VEER SECTOR W 3/4 BY 12/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE NIGTH VIS MODERATE TO POOR
GERLACHE STRAIT : SW 4/3 VEER NE 4/3 BY 13/0000 PROB OF MIST 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 12/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
EREBUS Y TERROR GULF : SW 3/4 VEER SECTOR N 3/4 BY 13/0300 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: NW 5/7 GUST WITH 8 INTENSITY BACK SECTOR W 6/5 WITH GUSTS BY 12/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR TOWARDS NIGTH VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NE 4/5 VEER SECTOR E 4 WITH GUSTS BY 13/0000 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 3/4 VEER NE 4/5 BY 12/1800 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 12/2100 PROB OF MIST VIS MODERATE TO GOOD=