1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-06-20, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 272: LOW 973HPA AT 45S 33W MOV SE DEEPENING PROVOKES WINDS FORCE 9 FROM
SECTOR S WITH GUST BETWEEN 50S-55S AND 20W-40W
WARNING 271: LOW 973HPA AT 45S 33W MOV SE DEEPENING PROVOKES WINDS FORCE 9 FROM
SECTOR W WITH GUST IN CENTRAL EAST AREA (40S- 50S AND 20W- 40W)
WARNING 270: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 9 FROM SECTOR N
WITH GUST BETWEEN 35S-40S AND 20W-35W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 973HPA 45S 33W MOV SE DPN EXTENDS CFNT AT 45S 33W 36S 36W 35S 38W MOV E
ASOCIATED WITH OFNT AT 45S 33W 50S 23W 45S 37W
RIDGE 39S 54W 48S 54W 57S 47W MOV E INTSF EXP 46S 36W BY 21/1200
LOW 990HPA 51S 70W MOV NE WKN EXP 45S 60W BY 21/1200 EXTENDS CFNT AT 51S 70W 46S
64W 42S 64W MOV NE
201400 UTC 1.SEA ICE LIMIT 6043S 02000W 5803S 02618W 5846S 03217W 5805S 03758W
5816S 04316W 5910S 04813W 6102S 05247W 6142S 05655W 6328S 06033W 6408S 06337W
6512S 06559W 6554S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5337S 03143W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4911S 02332W 4X1NM ICEBERG2 6145S 05555W
2X1NM 4.ICEBERGS AREA A6125S 02000W 4406S 02000W 5200S 03800W 5825S 03800W
B5825S 03800W 5200S 03800W 6000S 05500W 6106S 05500W C6106S 05500W 6000S 05500W
6200S 06716W 6829S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-06-21
COASTAL AREAS:
INNER RIO DE LA PLATA: NW 3/4 VIS GOOD
OUTER RIO DE LA PLATA: NW 3/4 VIS GOOD
URUGUAY SOUTH EAST COASTS: NW 3/4 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): NW 4/5 WITH GUSTS VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR W 5 WITH GUSTS VIS GOOD OCNL
MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 5/6 WITH GUSTS LOW PROB OF
ISOL RAIN VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5 WITH GUSTS BACK SECTOR S BY
21/0000 VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 5/6 WITH GUSTS BACK SECTOR S WITH
GUSTS BY 20/2100 LOW PROB OF ISOL SH RAIN VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 5/6 WITH GUSTS BACK SECTOR S WITH
GUSTS BY 20/2100 LOW PROB OF ISOL SH RAIN VIS MODERATE.
ISLAS MALVINAS COASTS: SECTOR N 5/6 WITH GUSTS PROB OF SH RAIN VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) W OF 45W: SECTOR W 5/4 WITH GUSTS LOW PROB OF
SH RAIN VIS GOOD OCNL MODERATE
W OF 35 - E OF 45W: SECTOR W 5 WITH GUSTS BACK VRB 3 BY 21/0000 PROB OF ISOL
RAIN VIS MODERATE
REST OF THE AREA: SECTOR N 9 WITH GUSTS BACK SECTOR W 7 WITH GUSTS BY 21/0000
RAIN TOWARDS THE END OF THE PERIOD IMPR VIS MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR N 9 WITH GUSTS BACK SECTOR W
BY 20/1800 DECR 6 WITH GUSTS BY 21/1200 RAIN AND SNOW MIXTURE VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) W OF 55W: SECTOR N 5 WITH GUSTS PROB
OF SH RAIN VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR W 5 WITH GUSTS VEER SECTOR N BY 21/0000 ISOL SH RAIN
VIS GOOD OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR S 8 WITH GUSTS DECR 5
WITH GUSTS BY 21/0900 LOW PROB OF RAIN AND SNOW MIXTURE VIS POOR
REST OF THE AREA: SECTOR S 5 WITH GUSTS VEER SECTOR W 6 WITH GUSTS BY 21/0300
LOW PROB OF ISOL RAIN AND SNOW MIXTURE VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR S 5 WITH GUSTS VEER
SECTOR N BY 20/1800 VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR W 5 WITH GUSTS INCR 7 WITH GUSTS BY 20/2100 LOW PROB
OF ISOL RAIN STARTING NIGTH VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 5 WITH GUSTS BACK SECTOR W 7 GUST
WITH 8 INTENSITY BY 21/0900 ISOL RAIN VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 20, JUNE 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
811/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 62S-68S 90W-75W UNTIL 21/1200
812/2026 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV SE DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 62S-66S 60W-50W UNTIL 21/2300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 947HPA 69S 90W MOV E DPN EXTENDS CFNT AT 68S 90W 67S 80W 61S 81W MOV E
LOW 981HPA 61S 71W MOV E DPN
RIDGE 60S 41W 65S 43W 70S 48W MOV E INTSF
191400 UTC 1.SEA ICE LIMIT 6043S 02000W 5803S 02618W 5846S 03217W 5805S 03758W 5816S 04316W 5910S 04813W 6102S 05247W 6142S 05655W 6328S 06033W 6408S 06337W 6512S 06559W 6554S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5340S 03142W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4919S 02327W 4X1NM ICEBERG2 6145S 05555W 2X1NM 4.ICEBERGS AREA A6102S 02000W 4500S 02000W 4300S 03400W 5900S 03500W B5900S 03500W 5400S 03700W 6000S 05500W 6212S 05500W C6100S 05500W 6100S 05900W 6500S 06716W 6723S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-06-21
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 5/6 BACK SECTOR W 7 GUST WITH 8 INTENSITY BY 21/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 5/6 INCR NW 7 GUST WITH 8 INTENSITY BY 20/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING TOWARDS NOON VIS MODERATE TO VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: NW 5/6 BACK SECTOR W 7 GUST WITH 8 INTENSITY BY 21/0000 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 7 GUST WITH 8 INTENSITY BACK SECTOR E 7 WITH GUSTS BY 21/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE
GERLACHE STRAIT : NE 5/6 WITH GUSTS BACK SECTOR W 5/4 BY 21/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
MARGARITA BAY : SECTOR N 5/7 BACK NW 5/4 BY 21/0300 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
EREBUS Y TERROR GULF : NW 7/8 WITH GUSTS BACK SW 6/7 GUST WITH 8 INTENSITY BY 21/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 7/8 WITH GUSTS VEER NW 7/5 WITH GUSTS BY 20/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 7/8 WITH GUSTS VEER NW 7/5 BY 21/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 4/5 VEER NE 5/6 BY 21/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 65S: SECTOR W 4/5 VEER NW 7/8 WITH GUSTS BY 20/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 4/5 VEER SECTOR N 4/5 BY 20/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 4/3 BACK SE 4/3 BY 21/0000 VIS GOOD=