1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-06-1, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 236: STRONG BARIC GRADIENT ON MOV E WILL PROVOKE WINDS FORCE 8 FROM
SECTOR N WITH GUST BETWEEN 35S-50S AND 20W-35W FROM 01/0300
PART 2 GENERAL SYNOPSIS AT 21:00UTC
311400 UTC 1.SEA ICE LIMIT 6342S 02000W 5958S 02618W 5844S 03218W 5825S 03758W
5933S 04316W 5941S 04813W 6029S 05247W 6315S 05655W 6335S 06033W 6415S 06336W
6616S 06605W 6607S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5609S 03220W 16XNM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4944S 02822W 5X1NM ICEBERG2 6339S 05621W
2X1NM ICEBERG3 6240S 05814W 3X1NM 4.ICEBERGS AREA A6500S 02000W 4300S 02000W
4700S 03500W 6100S 03500W B6300S 05500W 5900S 05500W 4800S 03500W 6100S 03500W
C5800S 05500W 6300S 05500W 6500S 06716W 6830S 06716W
LOW 987HPA 55S 32W MOV SE DPN EXTENDS OFNT AT 55S 27W 56S 34W 51S 39W
LOW 993HPA 48S 36W DPN EXTENDS CFNT AT 48S 36W 41S 38W 36S 50W MOV E
HIGH 1032HPA 48S 68W MOV NE NC
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-6-2
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 3/4 BACK E PROB OF MIST VIS VERY POOR TO MODERATE
OUTER RIO DE LA PLATA: SE 4 BACK E PROB OF FOG VIS VERY POOR TO MODERATE
URUGUAY SOUTH EAST COASTS: SE 4 BACK E PROB OF FOG VIS VERY POOR TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 4/3 BACK SECTOR E 3/4 BY 1/2100
PROB OF FOG VIS POOR TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 4 BACK SECTOR E 4/5 BY
1/1200 AFTERWARDS 5 BY 1/2100 PROB OF MIST LOW PROB OFISOL RAIN VIS MODERATE TO
GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR E 4 BACK SECTOR N 5 BY 1/1800
PROB OF RAIN VIS MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR E 3 BACK SECTOR N 4/5 BY 1/1200
INCR 6 WITH GUSTS BY 1/1800 PROB OF RAIN VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 4 INCR 5/6 WITH GUSTS BY 1/1500
PROB OF MIST DURING THE MORNING VIS GOOD TO MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4 VEER SECTOR N 5 BY 1/1800 UNSTABLE
PROB OF MIST VIS GOOD OCNL MODERATE
ISLAS MALVINAS COASTS: SW 5/4 VEER W BY 1/1800 VIS GOOD OCNL MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR N 8 PROB OF RAIN VIS POOR
OCNL VERY POOR
W OF 45W: SECTOR S 5 PROB OF ISOL RAIN IMPR TOWARDS EVENING VIS POOR TO
MODERATE
REST OF THE AREA: SECTOR E 6 BACK SECTOR S 7 WITH GUSTS BY 1/1200 PROB OF RAIN
VIS POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR N 7 GUST WITH 8
INTENSITY INCR 8 WITH GUSTS BY 1/0900 PROB OF RAIN VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR N 8 WITH GUSTS BACK SECTOR W 7/6 WITH GUSTS BY 1/0600
PROB OF RAIN VIS POOR OCNL VERY POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 7/6 WITH GUSTS PROB
OF RAIN VIS POOR
REST OF THE AREA: SECTOR S 6/5 WITH GUSTS PROB OF RAIN IMPR TOWARDS EVENING VIS
POOR TO MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55 - E OF 30W: SECTOR N 7 GUST WITH
8 INTENSITY BACK SECTOR S 6 WITH GUSTS BY 1/2100 PROB OF RAIN AND SNOW MIXTURE
VIS POOR
S OF 55 - E OF 30W: SECTOR W 5 PROB OF RAIN AND SNOW MIXTURE VIS MODERATE OCNL
POOR
REST OF THE AREA: SECTOR W 5/6 BACK SW 6 BY 1/1200 PROB OF RAIN AND SNOW
MIXTURE VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SW 6/7 LOW PROB OF RAIN AND SNOW
MIXTURE VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/5 VIS MODERATE TO GOOD
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 01, MAY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
739/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN PORTION OF DRAKE STRAIT MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 61S-73S 80W-70W UNTIL 01/0600
740/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST BACK SW IN 61S-65S 62W-50W UNTIL 01/2300
741/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA SOUTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 60S-71S 50W-30W UNTIL 01/2300
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 971HPA 68S 45W MOV SE DPN
RIDGE 60S 75W 65S 78W 68S 90W MOV E INTSF
LOW 974HPA 73S 75W MOV SE DPN
311400 UTC 1.SEA ICE LIMIT 6342S 02000W 5958S 02618W 5844S 03218W 5825S 03758W 5933S 04316W 5941S 04813W 6029S 05247W 6315S 05655W 6335S 06033W 6415S 06336W 6616S 06605W 6607S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5609S 03220W 16XNM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4944S 02822W 5X1NM ICEBERG2 6339S 05621W 2X1NM ICEBERG3 6240S 05814W 3X1NM 4.ICEBERGS AREA A6500S 02000W 4300S 02000W 4700S 03500W 6100S 03500W B6300S 05500W 5900S 05500W 4800S 03500W 6100S 03500W C5800S 05500W 6300S 05500W 6500S 06716W 6830S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-6-2
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 7/8 GUST WITH 9 INTENSITY BACK SW 7/6 WITH GUSTS BY 1/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 9 WITH GUSTS BACK SW 8/6 WITH GUSTS BY 1/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 7/8 GUST WITH 9 INTENSITY BACK SW 7/6 WITH GUSTS BY 1/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 9 WITH GUSTS BACK SW 8/6 WITH GUSTS BY 1/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EVENING VIS POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : SW 4/5 BACK SE 4/3 BY 1/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE OCNL GOOD
MARGARITA BAY : NW 7 WITH GUSTS VEER SECTOR N 6/5 BY 1/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
EREBUS Y TERROR GULF : SW 6/7 WITH GUSTS INCR SW 9 WITH GUSTS BY 1/0600 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 7/8 WITH GUSTS VEER NW 7/5 WITH GUSTS BY 1/0900 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 7/8 WITH GUSTS DECR SECTOR W 5 WITH GUSTS BY 1/0900 PROB OF MIST PROB OFMOD SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 8 GUST WITH 9 INTENSITY BACK SW 6/5 WITH GUSTS BY 1/1200 PROB OF FOG AND MIST IN PATCHES PROB OFMOD SNOW FALL WORSENING STARTING EARLY MORNING VIS MODERATE TO POOR
NORTHERN WEDDELL SEA N OF 64S: SECTOR W 6/7 INCR SECTOR W 8 GUST WITH 9 INTENSITY BY 1/0900 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS MORNING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 7/8 WITH GUSTS BACK SW 7/5 WITH GUSTS BY 1/1200 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SW 3/4 BACK SECTOR S 4/5 BY 1/1500 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS NOON VIS MODERATE TO GOOD=