1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 13, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
503/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR N GUST WITH 9 INTENSITY IN 60S-64S 80W-70W UNTIL 13/1800
504/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR N GUST WITH 9 INTENSITY IN 60S-64S 70W-55W UNTIL 14/0600
505/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR N GUST WITH 9 INTENSITY IN 60S-70S 45W-30W UNTIL 13/1500
506/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E GUST WITH 9 INTENSITY IN 63S-67S 70W-65W UNTIL 13/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 935HPA 61S 80W MOV SE WKN
LOW 943HPA 66S 79W MOV SE DPN EXTENDS CFNT AT 66S 79W 63S 70W 60S 65W MOV E
LOW 978HPA 66S 57W MOV SE DPN
LOW 977HPA 63S 35W MOV SE DPN
LOW 981HPA 72S 636W MOV E WKN
121400 UTC 1.SEA ICE LIMIT 6918S 01950W 6930S 02633W 6707S 03153W 6041S 03421W 6306S 03503W 6228S 04351W 6238S 04957W 6336S 05349W 6258S 05526W 6341S 06153W 6458S 06435W 6600S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5928S 03614W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5125S 03045W 2X1NM ICEBERG2 4636S 02821W 2X1NM ICEBERG3 4648S 02746W 6X3NM ICEBERG4 5001S 03052W 5X3NM ICEBERG5 4700S 02800W 4X2NM ICEBERG6 4658S 02740W 3X1NM ICEBERG7 5857S 03559W 3X1NM ICEBERG8 4307S 03517W 2X1NM 4.ICEBERGS AREA A7000S 02000W 4600S 02000W 4300S 03500W 7030S 02400W B7030S 02400W 4300S 03500W 6000S 05000W 6300S 05000W C6300S 05000W 6000S 05000W 6400S 06716W 6700S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-14
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR N 9 WITH GUSTS BACK NW 9 GUST WITH 9 INTENSITY BY 13/1800 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS VERY POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 7/8 INCR 9 BY 13/1800 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SECTOR N 9 WITH GUSTS BACK NW 9 GUST WITH 9 INTENSITY BY 13/1800 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 7/8 INCR NW 6 GUST WITH 9 INTENSITY BY 13/1800 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE
GERLACHE STRAIT : SECTOR E 8 GUST WITH 9 INTENSITY INCR SECTOR E 9 WITH GUSTS BY 13/1500 AFTERWARDS SECTOR N 8/7 WITH GUSTS BY 14/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR
MARGARITA BAY : SECTOR E 9 GUST WITH 9 INTENSITY DECR SECTOR E 8 WITH GUSTS BY 14/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE NIGTH VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : NW 7/8 WITH GUSTS INCR NW 9 WITH GUSTS BY 14/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA E OF 80 - N OF 64S: NW 8 WITH GUSTS BACK SECTOR W 9 WITH GUSTS BY 13/1800 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR
NORTHER BELLINGSHAUSEN SEA W OF 80 - N OF 65S: SW 6/5 WITH GUSTS VEER SECTOR W 5/6 BY 13/2100 PROB OF MIST PROB OFSCT SH SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR E 7/5 WITH GUSTS BACK NE 6/5 WITH GUSTS BY 14/0300 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SE 7 GUST WITH 8 INTENSITY BACK SECTOR E 6 WITH GUSTS BY 14/0600 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: NW 5/7 GUST WITH 8 INTENSITY INCR NW 9 WITH GUSTS BY 13/2100 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR
NORTHERN WEDDELL SEA REST OF THE AREA: NE 6/5 WITH GUSTS BACK SECTOR N 3/4 BY 13/1800 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR TOWARDS NIGTH VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 4/5 BACK NE 5/6 BY 14/0300 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS EARLY MORNING VIS GOOD TO MODERATE OCNL POOR=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-13, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 154: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR N WITH
GUST IN PENINSULA DE VALDES COASTS GOLFO DE SAN JORGE COASTS FROM 14/0300
WARNING 153: STRONG BARIC GRADIENT ON PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST BETWEEN 50S-60S 50W-60W
WARNING 152: LOW 981HPA AT 61S 36W MOV SE PROVOKES WINDS FORCE 8 AROUND ITSELF
WITH GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W)
WARNING 151: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST IN SOUTH PATAGONIA COASTS FIN DEL MUNDO COASTS ISLAS MALVINAS COASTS DRAKE
AREA (55S- 60S AND 60W- 67W)
PART 2 GENERAL SYNOPSIS AT 09:00UTC
121400 UTC 1.SEA ICE LIMIT 6918S 01950W 6930S 02633W 6707S 03153W 6041S 03421W
6306S 03503W 6228S 04351W 6238S 04957W 6336S 05349W 6258S 05526W 6341S 06153W
6458S 06435W 6600S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5928S 03614W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5125S 03045W 2X1NM ICEBERG2 4636S 02821W
2X1NM ICEBERG3 4648S 02746W 6X3NM ICEBERG4 5001S 03052W 5X3NM ICEBERG5 4700S
02800W 4X2NM ICEBERG6 4658S 02740W 3X1NM ICEBERG7 5857S 03559W 3X1NM ICEBERG8
4307S 03517W 2X1NM 4.ICEBERGS AREA A7000S 02000W 4600S 02000W 4300S 03500W 7030S
02400W B7030S 02400W 4300S 03500W 6000S 05000W 6300S 05000W C6300S 05000W 6000S
05000W 6400S 06716W 6700S 06716W
LOW 1008HPA 39S 47W MOV SE EXP 44S 37W BY 14/1200
HIGH 1020HPA 43S 58W MOV SW
CFNT AT 59S 35W 47S 39W 41S 54W MOV E
CFNT AT 58S 66W 56S 66W 53S 69W MOV E
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-14
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 4/5 FOG MIST DISSIPATING VIS MODERATE TO GOOD
OUTER RIO DE LA PLATA: SECTOR E 4/5 FOG MIST DISSIPATING VIS MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: SECTOR E 4/5 FOG MIST DISSIPATING VIS MODERATE TO
GOOD
MAR DEL PLATA COASTS(3617S - 3830S): VRB 3 BACK SECTOR N 4/5 BY 13/2100 FOG
MIST DISSIPATING VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): VRB 3 BACK SECTOR N 5/6 WITH GUSTS BY
13/1500 FOG MIST DISSIPATING VIS MODERATE TO GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5/6 WITH GUSTS INCR 8 WITH
GUSTS BY 14/0300 VIS MODERATE TO VERY POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 6/7 WITH GUSTS INCR 8 WITH
GUSTS BY 14/0300 VIS VERY POOR TO POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 8 WITH GUSTS DECR 6/7 WITH GUSTS
BY 13/2100 PROB OF RAIN TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 8 WITH GUSTS DECR 6/7 WITH GUSTS BY
13/2100 PROB OF RAIN TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR
ISLAS MALVINAS COASTS: SECTOR N 8 WITH GUSTS DECR 6/7 WITH GUSTS BY 13/2100 FOG
MIST DISSIPATING PROB OF RAIN TOWARDS THE END OF THE PERIOD VIS VERY POOR TO
POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR S 4/5 BACK SECTOR N BY
14/0000 VIS GOOD
W OF 30 - E OF 50W: SECTOR N 4/5 WITH GUSTS BACK SECTOR E WITH GUSTS BY 14/1500
VIS GOOD
REST OF THE AREA: SECTOR W 4/5 WITH GUSTS VEER SECTOR N WITH GUSTS BY 14/0900
PROB OF ISOL RAIN VIS GOOD OCNL MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR N 4/5 WITH GUSTS INCR
6/7 WITH GUSTS BY 14/0000 PROB OF SH RAIN VIS GOOD TO MODERATE
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS VEER SECTOR E WITH GUSTS BY 14/0300
PROB OF SH RAIN VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 4/5 WITH GUSTS PROB
OF ISOL RAIN VIS MODERATE
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS INCR 8 WITH GUSTS BY 14/0600 VIS
MODERATE TO VERY POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR N 8 WITH GUSTS BACK
SECTOR W WITH GUSTS BY 13/2100 PROB OF SH RAIN VIS VERY POOR
REST OF THE AREA: SECTOR W 8 WITH GUSTS DECR 6/7 WITH GUSTS BY 14/0600 PROB OF
SH RAIN VIS VERY POOR TO POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR W 6/7 WITH GUSTS VEER
SECTOR N WITH GUSTS BY 14/0000 VIS POOR OCNL VERY POOR
REST OF THE AREA: SECTOR N 8 WITH GUSTS DECR 6/7 WITH GUSTS BY 14/0300 VIS VERY
POOR TO POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 8 WITH GUSTS DECR 6/7 WITH GUSTS BY
14/0300 PROB OF ISOL RAIN VIS VERY POOR TO POOR
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