1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-07-27, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 348: STRONG BARIC GRADIENT MOV NE PROVOKES WINDS FORCE 8 FROM SW WITH
GUST BETWEEN 55S-60S 40W-68W UNTIL 28/0000
WARNING 347: LOW 980HPA AT 50S 31W MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM
SECTOR W WITH GUST BETWEEN 40S-50S AND 20W-40W UNTIL 28/0600
PART 2 GENERAL SYNOPSIS AT 09:00UTC
261400 UTC 1.SEA ICE LIMIT 5800S 02000W 5607S 02618W 5752S 03217W 5807S 03758W
5824S 04317W 5925S 04813W 6125S 05247W 6219S 05654W 6313S 06033W 6407S 06337W
6522S 06558W 6444S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6107S 05113W 21X12NM
A81 6027S 05249W 28X25NM A76C 5240S 03116W 16X6NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 6130S 05129W 6X3NM 4.ICEBERGS AREA A5820S 02000W 4600S 02000W 5300S
03800W 5830S 03800W B5830S 03800W 5300S 03800W 5800S 05000W 6040S 05000W C6040S
05000W 5800S 05000W 6300S 06716W 6620S 06716W
LOW 980HPA 50S 31W MOV SE DPN EXTENDS CFNT AT 38S 33W 45S 27W 51S 24W MOV E
CFNT AT 54S 43W 57S 41W 60S 41W MOV NE
LOW 1002HPA 43S 67W MOV E DPN EXP 43S 58W BY 28/1200
HIGH 1015HPA 37S 51W MOV E INTSF EXP 37S 28W BY 28/1200
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-07-28
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 3/4 WITH GUSTS BACK SECTOR S 3 BY 27/2100 PROB
OF ISOL RAIN VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: SECTOR N 4 WITH GUSTS BACK SECTOR S 3 BY 27/2100 PROB OF
ISOL RAIN TOWARDS NIGTH MIST DURING THE MORNING VIS MODERATE OCNL GOOD
URUGUAY SOUTH EAST COASTS: NE 4 WITH GUSTS BACK SECTOR S 3 BY 28/0000 PROB OF
ISOL RAIN TOWARDS NIGTH VIS GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 4/5 WITH GUSTS BACK SECTOR S 4
BY 27/2100 PROB OF ISOL RAIN STORMS DURING THE EVENING VIS GOOD TO MODERATE OCNL
POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 6 WITH GUSTS BACK SECTOR S 5
WITH GUSTS BY 27/1500 PROB OF ISOL RAIN STORMS IMPR TOWARDS NIGTH VIS POOR TO
GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 6 WITH GUSTS VEER SW 7 WITH
GUSTS BY 27/1500 PROB OF RAIN IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO
MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): NE 5 WITH GUSTS VEER SECTOR S 6 WITH
GUSTS BY 27/1500 DECR BY 28/0300 PROB OF ISOL RAIN SNOW FALL IMPR TOWARDS THE
END OF THE PERIOD VIS POOR TO MODERATE
SOUTH PATAGONIA COASTS(48S - 54S) N OF 50S: SECTOR E 4 WITH GUSTS VEER SECTOR
S BY 27/2100 PROB OF ISOL RAIN SNOW FALL VIS MODERATE OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SECTOR E 3 VEER SW 4 WITH
GUSTS BY 27/1800 PROB OF ISOL SNOW FALL VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SW 4/6 WITH GUSTS PROB OF RAIN AND SNOW
MIXTURE SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SW 4/6 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE SNOW FALL
VIS MODERATE TO POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR W 6/5 WITH GUSTS VEER SECTOR
N BY 28/0300 PROB OF RAIN TOWARDS THE END OF THE PERIOD IMPR VIS POOR TO
MODERATE
W OF 40 - E OF 50W: SW 5/4 WITH GUSTS BACK SECTOR N 5 WITH GUSTS BY 27/1500
PROB OF RAIN TOWARDS THE END OF THE PERIOD VIS GOOD TO POOR
REST OF THE AREA: SECTOR N 4/5 WITH GUSTS BACK SW BY 28/0300 PROB OF RAIN
STARTING EVENING VIS GOOD TO MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR W 8/5 WITH GUSTS PROB OF ISOL
RAIN SNOW FALL VIS VERY POOR TO MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 6/4 WITH GUSTS VEER
SECTOR N 5 WITH GUSTS BY 27/1800 PROB OF ISOL RAIN SNOW FALL SPELLS OF GOOD
WEATHER VIS MODERATE TO POOR
REST OF THE AREA: SECTOR N 4/5 WITH GUSTS BACK SECTOR W 6 WITH GUSTS BY 28/0000
PROB OF RAIN VIS MODERATE TO POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 6/7 GUST WITH 8 INTENSITY PROB
OF RAIN AND SNOW MIXTURE SNOW FALL VIS POOR OCNL MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55S: SW 8/6 WITH GUSTS PROB OF RAIN
AND SNOW MIXTURE SNOW FALL VIS VERY POOR TO POOR OCNL MODERATE
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS PROB OF ISOL RAIN AND SNOW MIXTURE
SNOW FALL VIS MODERATE TO POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SW 8/6 WITH GUSTS PROB OF RAIN AND SNOW
MIXTURE SNOW FALL VIS VERY POOR TO POOR OCNL MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 27, JULY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1015/2026 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST IN 62S-65S 60W-53W FROM 27/1500 UNTIL 28/1200
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 978HPA 61S 43W MOV E DPN
LOW 980HPA 64S 50W MOV E WKN
LOW 995HPA 72S 80W MOV E WKN
261400 UTC 1.SEA ICE LIMIT 5800S 02000W 5607S 02618W 5752S 03217W 5807S 03758W 5824S 04317W 5925S 04813W 6125S 05247W 6219S 05654W 6313S 06033W 6407S 06337W 6522S 06558W 6444S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6107S 05113W 21X12NM A81 6027S 05249W 28X25NM A76C 5240S 03116W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 6130S 05129W 6X3NM 4.ICEBERGS AREA A5820S 02000W 4600S 02000W 5300S 03800W 5830S 03800W B5830S 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 2026-07-28
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 7 GUST WITH 8 INTENSITY BACK SW 6/5 BY 27/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 7 GUST WITH 8 INTENSITY DECR SW 5 WITH GUSTS BY 27/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 60W: SW 7 GUST WITH 8 INTENSITY BACK SW 6/5 WITH GUSTS BY 27/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 7 WITH GUSTS INCR SECTOR W 8 WITH GUSTS BY 27/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR GRADUALLY DURING THE EARLY MORNING VIS MODERATE TO GOOD
GERLACHE STRAIT : SE 3/4 BACK NE 4/3 BY 28/0000 PROB OF MIST VIS MODERATE TO GOOD
MARGARITA BAY : SECTOR E 3/4 BACK NE 3/3 BY 28/0000 PROB OF MIST VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 5/7 GUST WITH 8 INTENSITY INCR SW 8 WITH GUSTS BY 27/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 4/5 WITH GUSTS INCR SW 6 WITH GUSTS BY 27/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 7 GUST WITH 8 INTENSITY DECR SW 6/5 WITH GUSTS BY 28/0000 PROB OF RAIN AND SNOW MIXTURE PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 7 WITH GUSTS BACK SW 6/5 WITH GUSTS BY 28/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 65S: SECTOR N 3 BACK SW 5/4 WITH GUSTS BY 27/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR E 3/4 VEER SE 3/4 BY 27/2300 PROB OF MIST VIS GOOD TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 4/3 VEER SE 4/3 BY 28/0000 PROB OF MIST VIS GOOD TO MODERATE=