1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-06, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 141: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST IN DRAKE AREA (55S- 60S AND 60W- 67W) BETWEEN 55S-60S AND 50W-60W UNTIL
07/0600
WARNING 139: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST BETWEEN 50S-60S AND 20W-30W UNTIL 07/0900
PART 2 GENERAL SYNOPSIS AT 09:00UTC
051400 UTC 1.SEA ICE LIMIT 7031S 02000W 6717S 02922W 6036S 03001W 6536S 03056W
6301S 03311W 6144S 04133W 6222S 04918W 6345S 05306W 6311S 05745W 6358S 06227W
6514S 06429W 6637S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5926S 03622W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5115S 03256W 3X1NM ICEBERG2 4851S 03347W
3X1NM ICEBERG3 4716S 02939W 2X1NM ICEBERG4 4804S 02939W 6X3NM ICEBERG5 5000S
03411W 5X3NM ICEBERG6 5002S 02943W 3X1NM ICEBERG7 4506S 03449W 2X1NM ICEBERG8
4801S 02923W 4X2NM ICEBERG9 4757S 02917W 3X1NM ICEBERG10 5933S 03611W 3X1NM
4.ICEBERGS AREA A 7127S 02000W 4600S 02000W 4300S 02500W 4300S 03500W 6124S
03500W B 6124S 03500W 4900S 03500W 4900S 03900W 5100S 04200W 6212S 04200W C
6212S 04200W 5700S 04200W 5900S 05000W 6100S 05500W 6421S 05500W D 6421S 05500W
6100S 05500W 6100S 06100W 6500S 06716W 6645S 06716W
HIGH 1025HPA 38S 52W MOV E EXP 37S 37W BY 07/1200 EXTENDS RIDGE AT 38S 52W 51S
50W 60S 49W MOV E
CFNT AT 60S 65W 49S 67W 44S 80W MOV E
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-7
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 VEER SECTOR S PROB OF RAIN VIS MODERATE
OUTER RIO DE LA PLATA: SECTOR E 4/5 WITH GUSTS BACK SECTOR N 4/3 PROB OF RAIN
VIS MODERATE OCNL POOR
URUGUAY SOUTH EAST COASTS: SECTOR E 3/5 WITH GUSTS INCR 6 WITH GUSTS BY 7/0600
PROB OF HVY RAIN VIS MODERATE OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR E 3/5 WITH GUSTS PROB OF HVY RAIN
STARTING EVENING VIS MODERATE OCNL POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4 VEER SECTOR E 4/5 WITH
GUSTS PROB OF RAIN SPELLS OF GOOD WEATHER VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): NW 4/5 WITH GUSTS DECR 3 PROB OF ISOL
RAIN IMPR TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): NW 5/4 WITH GUSTS BACK SECTOR S 4/5 BACK
SECTOR E 4/3 VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): NW 5 WITH GUSTS BACK SECTOR S 5/4 WITH
GUSTS VEER SECTOR W 5/4 WITH GUSTS PROB OF ISOL RAIN TOWARDS EVENING VIS
MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4/5 WITH GUSTS INCR 6 GUST WITH 8
INTENSITY BY 7/0300 VIS MODERATE
ISLAS MALVINAS COASTS: NW 4/5 WITH GUSTS BACK SECTOR S 4/5 WITH GUSTS VEER
SECTOR W 5/6 WITH GUSTS MIST DISSIPATING PROB OFISOL RAIN IMPR TOWARDS NIGTH VIS
MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR S 5/4 WITH GUSTS PROB OF
ISOL RAIN IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
E OF 50W: SECTOR W 3 BACK SECTOR E BACK SECTOR N PROB OF ISOL RAIN VIS GOOD
OCNL MODERATE
REST OF THE AREA: VRB 3 VEER SECTOR E 4/6 WITH GUSTS PROB OF HVY RAIN STARTING
NIGTH VIS GOOD TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR W 6/5 WITH GUSTS PROB OF ISOL
RAIN VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SW 5/4 WITH GUSTS VEER NW
WITH GUSTS PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE
REST OF THE AREA: NW 5/4 WITH GUSTS BACK W 5/3 PROB OF ISOL RAIN SPELLS OF GOOD
WEATHER VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR W 8 WITH GUSTS DECR 6
WITH GUSTS BY 7/0900 PROB OF SNOW FALL VIS POOR OCNL VERY POOR
REST OF THE AREA: SW 6 WITH GUSTS VEER W 5/6 WITH GUSTS PROB OF RAIN SNOW FALL
SPELLS OF GOOD WEATHER VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR W 6/5 WITH GUSTS INCR 6
WITH GUSTS PROB OF ISOL RAIN STARTING EVENING VIS MODERATE OCNL POOR
N OF 55 - W OF 50W: NW 5/6 WITH GUSTS BACK W 4/6 WITH GUSTS FOG DISSIPATING
PROB OFISOL RAIN IMPR TOWARDS EARLY MORNING VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 6 WITH GUSTS BACK SECTOR W 6/8 WITH GUSTS BY 06/1800
DECR SECTOR W 6 WITH GUSTS BY 7/0600 PROB OF RAIN SPELLS OF GOOD WEATHER VIS
POOR OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 8 WITH GUSTS DECR 6 WITH GUSTS BY
7/0600 PROB OF RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL VERY POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 06, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
459/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV SE WEAKENING PROVOKES WINDS FORCE 8 GUST WITH 9 INTENSITY IN 60S-63S 75W-70W UNTIL 06/1500
460/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR N GUST WITH 9 INTENSITY IN 60S-64S 65W-50W UNTIL 07/0900
461/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W GUST WITH 9 INTENSITY IN 60S-64S 90W-70W FROM 06/1800 UNTIL 07/0900
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 971HPA 62S 65W MOV SE DPN
RIDGE 60S 78W 63S 77W 67S 75W MOV E INTSF
051400 UTC 1.SEA ICE LIMIT 7031S 02000W 6717S 02922W 6036S 03001W 6536S 03056W 6301S 03311W 6144S 04133W 6222S 04918W 6345S 05306W 6311S 05745W 6358S 06227W 6514S 06429W 6637S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5926S 03622W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5115S 03256W 3X1NM ICEBERG2 4851S 03347W 3X1NM ICEBERG3 4716S 02939W 2X1NM ICEBERG4 4804S 02939W 6X3NM ICEBERG5 5000S 03411W 5X3NM ICEBERG6 5002S 02943W 3X1NM ICEBERG7 4506S 03449W 2X1NM ICEBERG8 4801S 02923W 4X2NM ICEBERG9 4757S 02917W 3X1NM ICEBERG10 5933S 03611W 3X1NM 4.ICEBERGS AREA A 7127S 02000W 4600S 02000W 4300S 02500W 4300S 03500W 6124S 03500W B 6124S 03500W 4900S 03500W 4900S 03900W 5100S 04200W 6212S 04200W C 6212S 04200W 5700S 04200W 5900S 05000W 6100S 05500W 6421S 05500W D 6421S 05500W 6100S 05500W 6100S 06100W 6500S 06716W 6645S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-7
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 5/8 WITH GUSTS VEER NW 7 GUST WITH 8 INTENSITY BY 7/0000 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR N 7/8 WITH GUSTS BACK SECTOR W 8 BY 06/1800 AFTERWARDS SECTOR W 7 GUST WITH 8 INTENSITY BY 7/0300 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 5/8 WITH GUSTS VEER NW 7 GUST WITH 8 INTENSITY BY 7/0000 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR N 7/8 WITH GUSTS BACK SECTOR W 8 BY 06/1800 AFTERWARDS SECTOR W 7 GUST WITH 8 INTENSITY BY 7/0300 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
GERLACHE STRAIT : NE 7 WITH GUSTS BACK SW 5/4 BY 06/2100 AFTERWARDS NE 4/3 BY 7/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR DURING THE EARLY MORNING VIS POOR TO MODERATE
MARGARITA BAY : NE 7/8 WITH GUSTS BACK NW 3 BY 06/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : NE 7 GUST WITH 8 INTENSITY BACK SW 7 GUST WITH 8 INTENSITY BY 06/2100 AFTERWARDS SW 6/5 WITH GUSTS BY 7/0900 PROB OF MIST PROB OFMOD SNOW FALL IMPR DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 65S: NW 8 WITH GUSTS BACK SECTOR W 6/5 WITH GUSTS BY 7/0600 PROB OF MIST PROB OFMOD RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 4/5 VEER SECTOR N 4/3 BY 06/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 4 VEER NW 3/4 BY 7/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA W OF 40W: SECTOR N 4 INCR SECTOR N 5/7 GUST WITH 8 INTENSITY BY 06/1800 AFTERWARDS SECTOR W 8 WITH GUSTS BY 7/0300 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE WORSENING STARTING EVENING VIS GOOD TO MODERATE OCNL POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR S 7/8 WITH GUSTS VEER SW 7/5 WITH GUSTS BY 06/2100 PROB OF MIST PROB OFMOD SNOW FALL IMPR DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 5/6 WITH GUSTS VEER SE 5/6 WITH GUSTS BY 7/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR DURING THE EARLY MORNING VIS POOR TO MODERATE=