1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-4, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 140: STRONG BARIC GRADIENT ON WILL PROVOKE WINDS FORCE 8 WITH GUST
BETWEEN 35S-40S 20W-30W FROM 04/2100
WARNING 139: LOW 975HPA AT 52S 50W MOV E DEEPENING EXPECTED 52S 40W BY 05/0000
WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH GUST BETWEEN 45S-55S AND 30W-40W
FROM 04/1800
WARNING 138: LOW 975HPA AT 52S 50W MOV E DEEPENING EXPECTED 52S 40W BY 05/0000
PROVOKES WINDS FORCE 8 AROUND ITSELF WITH GUST IN SOUTH WEST AREA (50S- 60S AND
40W- 60W) BETWEEN 45S-50S AND 40W-60W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 993HPA 59S 21W MOV E WKN EXTENDS CFNT AT 57S 17W 56S 21W 56S 27W
LOW 1013HPA 42S 28W MOV SE WKN EXTENDS WFNT AT 43S 28W 41S 25W 39S 21W ASOCIATED
WITH CFNT AT 42S 28W 41S 33W 41S 36W
LOW 1008HPA 40S 44W MOV SE INTSF EXP 54S 28W BY 05/0000 EXTENDS CFNT AT 40S 43W
36S 45W 35S 45W
LOW 975HPA 52S 50W MOV E DPN EXP 52S 40W BY 05/0000 EXTENDS CFNT AT 56S 47W 48S
45W 39S 52W 36S 57W ASOCIATED WITH OFNT AT 56S 47W 53S 53W 50S 52W
HIGH 1023HPA 42S 64W MOV NE INTSF EXP 39S 60W BY 05/0000
031400 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 5922S 03627W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5116S 03258W 3X1NM ICEBERG2 4847S 03347W
3X1NM ICEBERG3 4724S 02945W 2X1NM ICEBERG4 4814S 02948W 6X3NM ICEBERG5 5002S
03417W 5X3NM ICEBERG6 5014S 03001W 3X1NM ICEBERG7 4505S 03438W 2X1NM ICEBERG8
4819S 02943W 4X2NM ICEBERG9 4820S 02914W 3X1NM 4.ICEBERGS AREA A 7133S 02000W
4700S 02000W 4400S 02700W 4400S 03000W 6855S 03000W B 6855S 03000W 4500S 03000W
4500S 03500W 5200S 04300W 6225S 04300W C 6225S 04300W 5700S 04300W 6100S 06200W
6500S 06716W 6726S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-04-5
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 5 WITH GUSTS BACK SE 4 WITH GUSTS BY 4/1500 PROB
OF RAIN HVY STORMS NEXT ISOL RAIN IMPR STARTING NOON VIS POOR TO GOOD
OUTER RIO DE LA PLATA: SECTOR S 6/5 WITH GUSTS DECR 5/4 BY 4/1800 PROB OF RAIN
STORMS IMPR STARTING EARLY MORNING VIS MODERATE OCNL POOR TO GOOD
URUGUAY SOUTH EAST COASTS: SECTOR S 6/5 WITH GUSTS DECR 5/4 BY 4/1800 PROB OF
RAIN STORMS IMPR STARTING EARLY MORNING VIS MODERATE OCNL POOR TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 6/5 GUST WITH 8 INTENSITY DECR
5/4 PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 5/4 VRB 3 BY 4/1800 LOW PROB
OF SH RAIN VIS MODERATE TO GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SW 6/5 GUST WITH 8 INTENSITY VRB 4/3 BY
4/1800 LOW PROB OF SH IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SW 7/6 GUST WITH 8 INTENSITY DECR 5/4 BY
4/0900 PROB OF SH RAIN IMPR STARTING NOON VIS MODERATE TO GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SW 6/5 GUST WITH 8 INTENSITY DECR 5 BY
4/1800 PROB OF SH RAIN IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
FIN DEL MUNDO COASTS(54S - 55S): SW 6/5 GUST WITH 8 INTENSITY DECR 5 BY 4/1800
PROB OF SH RAIN IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD.
ISLAS MALVINAS COASTS: SW 7/6 GUST WITH 8 INTENSITY DECR 5 BY 4/2100 PROB OF SH
RAIN VIS MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 5/6 WITH GUSTS INCR 7/8 WITH
GUSTS BY 4/2100 WORSENING WITH PROB OF RAIN HVY STORMS TOWARDS THE END OF THE
PERIOD VIS MODERATE TO POOR
E OF 40W: NW 5/6 GUST WITH 8 INTENSITY SECTOR S 5 WITH GUSTS BY 4/2100 PROB OF
RAIN HVY STORMS VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 4/5 BACK SW 5/6 GUST WITH 8 INTENSITY BY 4/1200 PROB
OF SH RAIN VIS MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR N 5/6 GUST WITH 8
INTENSITY BACK SECTOR W 5 WITH GUSTS BY 4/2100 PROB OF RAIN HVY STORMS VIS
MODERATE TO POOR
W OF 30 - N OF 45S: SECTOR N 5 WITH GUSTS W 5/6 GUST WITH 8 INTENSITY BY 4/1800
PROB OF RAIN ISOL STORMS VIS MODERATE TO POOR
REST OF THE AREA: SECTOR N 6 GUST WITH 8 INTENSITY W 7/8 WITH GUSTS BY 4/1800
PROB OF RAIN STORMS VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: SW 5/6 GUST WITH 8 INTENSITY
PROB OF SH RAIN VIS MODERATE OCNL POOR
E OF 50 - S OF 45S: SECTOR W 8 WITH GUSTS PROB OF SH RAIN VIS POOR
REST OF THE AREA: SW 8/7 WITH GUSTS PROB OF SH RAIN IMPR TOWARDS THE END OF THE
PERIOD VIS POOR TO MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR N 5/6 GUST WITH 8
INTENSITY WORSENING WITH PROB OF HVY RAIN STARTING EVENING VIS MODERATE TO
POOR
W OF 30 - N OF 55S: SECTOR N 6 GUST WITH 8 INTENSITY SECTOR W 8 WITH GUSTS BY
4/1800 WORSENING WITH PROB OF HVY RAIN VIS POOR OCNL VERY POOR
REST OF THE AREA: SECTOR E 5 WITH GUSTS SECTOR N 5 WITH GUSTS BY 4/1800 SECTOR
S 5/6 GUST WITH 8 INTENSITY BY 4/2300 PROB OF HVY RAIN VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: NW 8 WITH GUSTS SW 8
WITH GUSTS BY 4/0900 PROB OF HVY RAIN VIS VERY POOR
REST OF THE AREA: SECTOR S 8 WITH GUSTS VEER SW 8/7 WITH GUSTS BY 4/1800 PROB
OF SH RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SW 5/6 WITH GUSTS W 6 GUST WITH 8 INTENSITY
BY 4/1200 LOW PROB OF 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 03, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
444/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 GUST WITH 9 INTENSITY IN 60S-67S 90W-70W UNTIL 04/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 982HPA 63S 48W MOV SE WKN
LOW 985HPA 67S 32W MOV E WKN
RIDGE 60S 74W 65S 70W 67S 69W MOV E WKN
HIGH 991HPA 66S 58W MOV E WKN
021400 UTC 1.SEA ICE LIMIT 7052S 02000W 6617S 03023W 6130S 03147W 6244S 03258W 6135S 04305W 6245S 05035W 6257S 05513W 6434S 05528W 6408S 06334W 6525S 06541W 6558S 06643W 6610S 06717W 2.ICEBERGS GREATER THAN 10NM A76C 5920S 03626W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5119S 03255W 5X2 ICEBERG2 4845S 03244W 3X1NM ICEBERG3 4745S 02954W 4X1NM ICEBERG4 4851S 02959W 3X2NM ICEBERG5 4713S 02908W 2X2NM ICEBERG6 4823S 03001W 9X7NM ICEBERG7 5003S 03418W 9X7NM ICEBERG8 5014S 03001W 3X1NM ICEBERG9 4514S 03419W 2X1NM 4.ICEBERGS AREA A 7133S 02000W 4700S 02000W 4400S 02700W 4400S 03000W 6855S 03000W B 6855S 03000W 4500S 03000W 4500S 03500W 5200S 04300W 6225S 04300W C 6225S 04300W 5700S 04300W 6100S 06200W 6500S 06716W 6726S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-4
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 4/5 VEER SECTOR W 4/5 BY 4/0000 PROB OF FOG AND MIST IN PATCHES IMPR TOWARDS NOON VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR S 6/5 BACK SE 4/3 BY 03/1800 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE WORSENING STARTING NOON VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS W OF 60W: SW 4/5 VEER SECTOR W 4/5 BY 4/0000 PROB OF FOG AND MIST IN PATCHES IMPR TOWARDS NOON VIS VERY POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 5/4 VEER SW 4/5 BY 03/1500 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
GERLACHE STRAIT : SECTOR E 3/4 BACK NE 3/4 BY 03/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR
MARGARITA BAY : NE 4/5 INCR NE 7 GUST WITH 8 INTENSITY BY 03/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL POOR
EREBUS Y TERROR GULF : NE 3/4 BACK SECTOR N 4/5 BY 4/0600 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA W OF 80W: NW 7/8 GUST WITH 9 INTENSITY BACK SECTOR W 8 WITH GUSTS BY 4/0600 PROB OF MIST PROB OFMOD RAIN AND SNOW MIXTURE IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR N 5/6 WITH GUSTS BACK NW 9 WITH GUSTS BY 4/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NW 4/5 VEER NE 4/3 BY 03/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING TOWARDS NIGTH VIS MODERATE TO POOR
NORTHERN WEDDELL SEA N OF 65S: NW 3/4 VEER NE 4 BY 03/1800 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER STARTING EVENING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SE 4 BACK NE 4/3 BY 03/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): VRB 3/4 INCR SE 4/5 BY 03/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD=