1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-13, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 152: LOW 990HPA AT 58S 46W MOV SE DEEPENING PROVOKES WINDS FORCE 9
AROUND ITSELF WITH GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W) SOUTH WEST
AREA (50S- 60S AND 40W- 60W)
WARNING 151: STRONG BARIC GRADIENT ON PROVOKES WINDS FORCE 9 FROM SECTOR N WITH
GUST IN SOUTH PATAGONIA COASTS FIN DEL MUNDO COASTS ISLAS MALVINAS COASTS DRAKE
AREA (55S- 60S AND 60W- 67W) BETWEEN 50S-60S AND 50W-60W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
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
HIGH 1029HPA 39S 34W MOV E NC EXP 40S 25W BY 13/2100
LOW 1014HPA 36S 52W MOV SE DPN EXP 42S 45W BY 13/2100
LOW 990HPA 58S 46W MOV SE DPN EXTENDS CFNT AT 55S 47W 45S 53W 39S 62W MOV NE
HIGH 1017HPA 43S 63W MOV E NC
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-04-14
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3 PROB OF FOG MIST IMPR STARTING EARLY MORNING
VIS MODERATE TO GOOD
OUTER RIO DE LA PLATA: SECTOR E 3/4 PROB OF FOG MIST IMPR STARTING EARLY MORNING
VIS MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: VRB 5/4 PROB OF FOG MIST IMPR STARTING EARLY MORNING
VIS MODERATE TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): VRB 3/4 PROB OF FOG MIST IMPR STARTING
EARLY MORNING VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): VRB 4/5 PROB OF ISOL RAIN IMPR
STARTING EVENING VIS MODERATE OCNL GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 6/7 GUST WITH 8 INTENSITY VIS
MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 6/7 GUST WITH 8 INTENSITY VIS
MODERATE OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 7/8 WITH GUSTS VIS POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 7/9 WITH GUSTS PROB OF SH VIS POOR
OCNL VERY POOR
ISLAS MALVINAS COASTS: SECTOR W 6 WITH GUSTS VEER SECTOR N 7/8 WITH GUSTS BY
13/0300 VIS POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR S 5/4 BACK VRB 4/3 VIS
GOOD
W OF 35 - E OF 45W: SECTOR N 4/6 WITH GUSTS PROB OF RAIN STARTING EARLY MORNING
VIS MODERATE TO POOR
REST OF THE AREA: SECTOR N 6/7 WITH GUSTS BACK SW 6/5 WITH GUSTS BY 13/1200
PROB OF HVY RAIN NEXT RAIN VIS VERY POOR TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SW 7/6 GUST WITH 8 INTENSITY
VEER NW 5/6 WITH GUSTS BY 13/0600 VIS POOR TO MODERATE
REST OF THE AREA: NW 5/6 WITH GUSTS PROB OF RAIN STARTING EARLY MORNING NEXT
HVY RAIN VIS MODERATE TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: NW 7/6 WITH GUSTS BACK VRB
6/5 WITH GUSTS BY 13/1200 PROB OF RAIN NEXT HVY RAIN VIS POOR
REST OF THE AREA: SECTOR S 5 BACK SECTOR N 6/7 WITH GUSTS BY 13/0900 PROB OF SH
IMPR STARTING EARLY MORNING VIS POOR OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR N 7/9 WITH GUSTS BACK
SECTOR W 8 WITH GUSTS BY 13/1800 PROB OF RAIN VIS VERY POOR
REST OF THE AREA: SECTOR N 8/9 WITH GUSTS BACK SECTOR W 8 WITH GUSTS BY 13/1200
PROB OF RAIN IMPR STARTING EVENING VIS VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR N 8 WITH GUSTS BACK
SECTOR W 8/7 WITH GUSTS BY 13/0300 PROB OF RAIN IMPR STARTING EARLY MORNING VIS
VERY POOR TO POOR
REST OF THE AREA: SECTOR W 8/7 WITH GUSTS VEER SECTOR N 7/8 WITH GUSTS BY
13/0600 VIS POOR OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 8/9 WITH GUSTS PROB OF RAIN VIS
VERY POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 13, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
499/2026 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
500/2026 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
501/2026 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
502/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR E GUST WITH 9 INTENSITY IN 64S-67S 70W-65W FROM 13/0900 UNTIL 13/2100
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 959HPA 60S 87W MOV SE DPN EXTENDS CFNT AT 60S 87W 63S 75W 63S 64W MOV SE
LOW 980HPA 68S 57W MOV SE WKN
LOW 985HPA 60S 44W MOV SE DPN
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 00:00 UTC VALID UNTIL 00:00 UTC 2026-04-14
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 8 GUST WITH 9 INTENSITY VEER SECTOR N 9 GUST WITH 9 INTENSITY BY 13/0600 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 5/6 INCR NW 7/8 WITH GUSTS BY 13/0600 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER STARTING EVENING VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: NW 8 GUST WITH 9 INTENSITY VEER SECTOR N 9 GUST WITH 9 INTENSITY BY 13/0600 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 9 WITH GUSTS BY 13/0900 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER DURING THE MORNING VIS POOR TO MODERATE
GERLACHE STRAIT : SECTOR E 6/8 WITH GUSTS INCR SECTOR E 9 WITH GUSTS BY 13/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR
MARGARITA BAY : SECTOR E 7/8 WITH GUSTS INCR SECTOR E 9 WITH GUSTS BY 13/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : SE 4/5 BACK NW 5/7 WITH GUSTS BY 13/0600 AFTERWARDS NW 8 BY 13/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA E OF 80 - N OF 64S: SECTOR N 8 WITH GUSTS BACK NW 8/7 WITH GUSTS BY 13/0600 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS MODERATE TO POOR
NORTHER BELLINGSHAUSEN SEA W OF 80 - N OF 65S: SECTOR E 5/6 WITH GUSTS VEER SECTOR S 7/8 BY 13/0600 AFTERWARDS SW 5/4 BY 13/1200 PROB OF MIST PROB OFSCT SH SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR E 8 WITH GUSTS VEER SE 8/7 WITH GUSTS BY 13/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 5/6 BACK SECTOR E 6/7 WITH GUSTS BY 13/0900 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS POOR TO MODERATE
NORTHERN WEDDELL SEA W OF 40W: NE 5/4 BACK NW 4/5 BY 13/0600 AFTERWARDS NW 6/8 BY 13/1200 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR STARTING EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NE 6/8 WITH GUSTS BACK SW 8 BY 13/1200 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): NE 4/5 VEER SE 5/4 BY 13/0900 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS MORNING VIS MODERATE TO GOOD=