1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-04, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 140: COLD FRONT AT 55S 35W 46S 36W 36S 47W MOV E EXPECTED 46S 20W 39S
26W 35S 35W BY 05/1200 WILL PROVOKE WINDS FORCE 8 FROM SECTOR N WITH GUST
BETWEEN 35S-40S AND 30W-20W FROM 05/0000
WARNING 139: LOW 969HPA AT 54S 44W MOV SE DEEPENING EXPECTED 56S 32W BY 05/1200
PROVOKES WINDS FORCE 8 AROUND ITSELF WITH GUST
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 969HPA 54S 44W MOV SE DPN EXP 56S 32W BY 05/1200 EXTENDS CFNT AT 55S 35W 46S
36W 36S 47W MOV E EXP 46S 20W 39S 26W 35S 35W BY 05/1200 ASOCIATED WITH OFNT AT
55S 35W 58S 41W 54S 52W 49S 48W
HIGH 1028HPA 40S 66W MOV NE WKN EXP 38S 55W BY 05/1200
041400 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 5924S 03626W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5115S 03256W 3X1NM ICEBERG2 4851S 03347W
3X1NM ICEBERG3 4716S 02939W 2X1NM ICEBERG4 4809S 02944W 6X3NM ICEBERG5 5001S
03414W 5X3NM ICEBERG6 5004S 02942W 3X1NM ICEBERG7 4505S 03444W 2X1NM ICEBERG8
4812S 02930W 4X2NM ICEBERG9 4802S 02917W 3X1NM ICEBERG10 5934S 03618W 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 2026-04-5
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 4/5 WITH GUSTS BACK SECTOR E 4 PROB OF SH
TOWARDS NIGTH IMPR VIS MODERATE TO GOOD
OUTER RIO DE LA PLATA: SECTOR S 4/5 WITH GUSTS BACK SECTOR S 4 PROB OF SH DURING
THE EVENING IMPR VIS MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: SECTOR S 6/4 WITH GUSTS PROB OF SH TOWARDS NIGTH IMPR
VIS POOR TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 5/4 WITH GUSTS PROB OF SH SPELLS
OF GOOD WEATHER VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 5/4 VEER VRB 3 PROB OF SH
TOWARDS NIGTH IMPR VIS MODERATE TO GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SW 6/4 WITH GUSTS VEER VRB 3 LOW PROB
OF SH VIS MODERATE OCNL POOR TO GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SW 5/4 WITH GUSTS VEER VRB 3/4 PROB OF
SH TOWARDS NIGTH IMPR VIS MODERATE TO GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 5/4 VEER SECTOR W VEER SECTOR N
PROB OF SH DURING THE EVENING IMPR VIS GOOD OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 5/4 WITH GUSTS LOW PROB OF ISOL RAIN
VIS GOOD
ISLAS MALVINAS COASTS: SW 7/6 WITH GUSTS VEER W 5/4 PROB OF SH SPELLS OF GOOD
WEATHER VIS POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR N 5/8 WITH GUSTS PROB OF HVY
RAIN STORMS SPELLS OF GOOD WEATHER VIS MODERATE TO VERY POOR
W OF 40W: SECTOR S 4/5 WITH GUSTS PROB OF SH SPELLS OF GOOD WEATHER VIS
MODERATE OCNL GOOD
REST OF THE AREA: SECTOR N 6/4 WITH GUSTS BACK SECTOR S 6/5 WITH GUSTS PROB OF
ISOL SH STORMS SPELLS OF GOOD WEATHER VIS POOR OCNL MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) S OF 45S: SECTOR N 6/5 WITH GUSTS BACK
SECTOR W 6/8 WITH GUSTS SH RAIN SPELLS OF GOOD WEATHER VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR N 7/6 WITH GUSTS BACK SECTOR W 7 WITH GUSTS PROB OF SH
RAIN SPELLS OF GOOD WEATHER VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) S OF 45S: SECTOR W 8/6 WITH GUSTS PROB
OF SH SPELLS OF GOOD WEATHER VIS VERY POOR TO POOR
REST OF THE AREA: SW 7/5 WITH GUSTS PROB OF SH SPELLS OF GOOD WEATHER VIS POOR
OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) W OF 30 - N OF 55S: SECTOR N 6/7 WITH
GUSTS BACK SECTOR W 8 WITH GUSTS PROB OF SH SPELLS OF GOOD WEATHER PROB OF FOG
PATCHES TOWARDS NIGTH VIS VERY POOR TO POOR
E OF 30 - N OF 55S: SECTOR N 5/7 WITH GUSTS PROB OF SH RAIN SPELLS OF GOOD
WEATHER VIS MODERATE TO POOR
E OF 30 - S OF 55S: SECTOR N 6/4 WITH GUSTS PROB OF SH RAIN SPELLS OF GOOD
WEATHER VIS POOR TO MODERATE
REST OF THE AREA: SECTOR E 4 BACK VRB BACK SECTOR S 6/8 WITH GUSTS PROB OF SH
FOG PATCHES RAIN SPELLS OF GOOD WEATHER VIS MODERATE TO VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 45W: VRB 5 VEER SECTOR S 8/7 WITH
GUSTS PROB OF FOG PATCHES IMPR PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS VERY
POOR TO POOR
W OF 50W: SECTOR S 7 WITH GUSTS VEER SECTOR W 6/5 WITH GUSTS PROB OF SH RAIN
SPELLS OF GOOD WEATHER VIS POOR TO MODERATE
REST OF THE AREA: SW 8/7 WITH GUSTS PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS
VERY POOR TO POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/5 WITH GUSTS PROB OF ISOL RAIN
VIS MODERATE OCNL GOOD
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 04, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
447/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 GUST WITH 9 INTENSITY IN 60S-65S 70W-55W FROM 04/1500 UNTIL 05/0000
448/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 GUST WITH 9 INTENSITY IN 60S-68S 90W-70W UNTIL 05/0600
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 992HPA 69S 38W MOV E WKN
HIGH 996HPA 65S 48W MOV E INTSF
LOW 960HPA 70S 80W MOV E DPN EXTENDS CFNT AT 70S 80W 67S 70W 60S 72W MOV E
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 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-5
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 7/8 GUST WITH 9 INTENSITY BACK SW 7 WITH GUSTS BY 04/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR TOWARDS NIGTH VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 4/5 BACK SECTOR W 7/8 WITH GUSTS BY 04/2100 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE IMPR STARTING NIGTH VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS W OF 60W: NW 7/8 GUST WITH 9 INTENSITY BACK SW 7 WITH GUSTS BY 04/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR TOWARDS NIGTH VIS VERY POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 4/5 BACK SECTOR W 7/8 WITH GUSTS BY 04/1500 AFTERWARDS SECTOR W 9 WITH GUSTS BY 5/0000 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE IMPR DURING THE EARLY MORNING VIS POOR TO MODERATE
GERLACHE STRAIT : NE 7/8 WITH GUSTS DECR NE 5 BY 04/2100 AFTERWARDS SW 5/6 BY 5/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS GOOD TO MODERATE OCNL POOR
MARGARITA BAY : NE 7/8 WITH GUSTS DECR NW 6/5 BY 04/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR
EREBUS Y TERROR GULF : NE 3/4 BACK SW 5/6 BY 04/2100 AFTERWARDS SW 7 BY 5/0300 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 65 - W OF 80W: SECTOR W 6/5 WITH GUSTS VEER NW 8 GUST WITH 9 INTENSITY BY 04/2100 PROB OF MIST PROB OFMOD RAIN AND SNOW MIXTURE WORSENING TOWARDS NIGTH VIS MODERATE TO POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NW 7/8 GUST WITH 9 INTENSITY BACK SECTOR W 8 WITH GUSTS BY 04/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NE 4/5 INCR NW 5/6 WITH GUSTS BY 04/1800 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR DURING THE EARLY MORNING VIS POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SE 5/7 VEER SECTOR S 7 GUST WITH 8 INTENSITY BY 04/2100 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE WORSENING STARTING NOON VIS MODERATE TO POOR
NORTHERN WEDDELL SEA REST OF THE AREA: VRB 3/4 INCR NE 4/5 BY 04/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 4/5 BACK NE 5 BY 04/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE=