1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-03, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 139: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST BETWEEN 45S-50S AND 50W-55W
WARNING 138: LOW 975HPA AT 51S 57W MOV SE DEEPENING EXPECTED 53S 55W BY 04/1200
WILL PROVOKE WINDS FORCE 8 AROUND ITSELF WITH GUST IN SOUTH WEST AREA (50S- 60S
AND 40W- 60W) BETWEEN 45S-50S AND 40W-60W FROM 03/1500
WARNING 136: LOW 975HPA AT 51S 57W MOV SE DEEPENING EXPECTED 53S 55W BY 04/1200
PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN PENINSULA DE VALDES COASTS GOLFO DE
SAN JORGE COASTS SOUTH PATAGONIA COASTS FIN DEL MUNDO COASTS ISLAS MALVINAS
COASTS BETWEEN 45S-55S AND 55W-60W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
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
LOW 975HPA 51S 57W MOV SE DPN EXP 53S 55W BY 04/1200 EXTENDS CFNT AT 52S 55W 49S
54W 41S 66W MOV NE ASOCIATED WITH OFNT AT 52S 55W 52S 58W 49S 60W
STRONG BARIC GRADIENT 45S 50W 50S 55W MOV E
LOW 1008HPA 38S 48W MOV SE EXP 44S 29W BY 04/1200
HIGH 1023HPA 46S 22W MOV E EXTENDS RIDGE AT 42S 22W 51S 26W 60S 25W MOV E
LOW 1011HPA 40S 35W MOV E EXP 45S 25W BY 04/1200
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-4
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 3 BACK SECTOR S 5/6 WITH GUSTS BY 03/1800 PROB
OF HVY RAIN STORMS DURING THE EVENING IMPR STARTING THE END OF THE PERIOD MIST
FOG PATCHES VIS MODERATE OCNL POOR
OUTER RIO DE LA PLATA: SECTOR N 3 BACK SECTOR S 5/7 WITH GUSTS BY 03/1800 PROB
OF HVY RAIN STORMS DURING THE EVENING DISSIPATING IMPR TOWARDS THE END OF THE
PERIOD MIST FOG PATCHES VIS MODERATE OCNL POOR
URUGUAY SOUTH EAST COASTS: SECTOR N 3 BACK SECTOR S 5/6 WITH GUSTS BY 4/0300
PROB OF HVY RAIN STORMS STARTING NIGTH MIST FOG PATCHES DISSIPATING VIS MODERATE
OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 3 BACK SECTOR S 6/5 WITH GUSTS
BY 03/1500 PROB OF HVY RAIN STORMS IMPR STARTING NIGTH MIST DISSIPATING VIS
MODERATE OCNL POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 6/5 WITH GUSTS DECR 4 BY
03/2100 PROB OF RAIN STORMS NXT PROB OF SH MIST VIS MODERATE OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): SW 8/5 WITH GUSTS PROB OF SH VIS POOR
TO MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SW 8/5 WITH GUSTS PROB OF SH VIS POOR TO
MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SW 8/6 WITH GUSTS PROB OF SH VIS POOR TO
MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SW 8/6 WITH GUSTS PROB OF SH RAIN AND SNOW
MIXTURE VIS POOR TO MODERATE
ISLAS MALVINAS COASTS: SW 8/7 WITH GUSTS PROB OF STORMS NXT PROB OF SH RAIN AND
SNOW MIXTURE VIS POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: NW 5 WITH GUSTS PROB OF RAIN STORMS
VIS MODERATE OCNL POOR
REST OF THE AREA: VRB 3 BACK SW 5/6 WITH GUSTS PROB OF RAIN STORMS STARTING
EVENING VIS GOOD TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: NE 5 WITH GUSTS BACK SECTOR
N 5/6 WITH GUSTS PROB OF RAIN STORMS SPELLS OF GOOD WEATHER VIS POOR OCNL
MODERATE
REST OF THE AREA: SECTOR N 5/7 WITH GUSTS PROB OF SH RAIN STARTING NIGTH VIS
MODERATE TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: SECTOR N 6/7 WITH GUSTS BACK
SW 7/6 WITH GUSTS MIST FOG PATCHES DISSIPATING PROB OF SH RAIN VIS POOR
E OF 45S: SECTOR N 8 WITH GUSTS BACK SECTOR W 8 WITH GUSTS MIST FOG PATCHES
DISSIPATING PROB OFHVY SH DRIZZLE VIS POOR
REST OF THE AREA: SW 8/7 WITH GUSTS PROB OF HVY SH RAIN NEXT SH VIS POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 57S: SECTOR W 7 WITH GUSTS VEER
SECTOR N WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS POOR
REST OF THE AREA: SECTOR W 6 WITH GUSTS VEER SECTOR E 6/7 WITH GUSTS PROB OF
SNOW FALL VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR N 7/8 WITH GUSTS VEER
SECTOR S 8 WITH GUSTS PROB OF SNOW FALL VIS POOR
REST OF THE AREA: SECTOR S 7/8 WITH GUSTS PROB OF SNOW FALL VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SW 7/6 WITH GUSTS VEER SECTOR W 7 WITH GUSTS
PROB OF SNOW FALL VIS 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=