1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 17, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
533/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 GUST WITH 9 INTENSITY IN 60S-67S 50W-30W UNTIL 17/0500
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 961HPA 67S 82W MOV SE DPN
LOW 980HPA 67S 55W MOV SE DPN
161400 UTC 1.SEA ICE LIMIT 6840S 02000W 6828S 02729W 6327S 03132W 6009S 03309W 6059S 03952W 6217S 05036W 6337S 05311W 6313S 05740W 6339S 06042W 6431S 06416W 6601S 06544W 6644S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5920S 03602W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4640S 02749W 6X3NM ICEBERG2 4903S 03023W 5X3NM ICEBERG3 4629S 02736W 4X2NM ICEBERG4 4656S 02738W 3X1NM ICEBERG5 5825S 03611W 3X1NM ICEBERG6 4319S 03357W 2X1NM 4.ICEBERGS AREA A6859S 02000W 4124S 02000W 4307S 03613W 6507S 03625W B6107S 03625W 4305S 03613W 6002S 05503W 6328S 05500W C6328S 05500W 6002S 05503W 6445S 06716W 6638S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-04-18
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 5/6 DECR SECTOR N 4 BY 17/0900 PROB OF FOG AND MIST IN PATCHES PROB OFISOL RAIN AND SNOW MIXTURE WORSENING STARTING EVENING VIS GOOD TO MODERATE OCNL VERY POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR N 7/6 WITH GUSTS BACK NW 5/4 BY 17/0600 AFTERWARDS NE 5/6 WITH GUSTS BY 17/1800 PROB OF FOG MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE WORSENING STARTING EARLY MORNING VIS MODERATE TO VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: NW 5/6 DECR SECTOR N 4 BY 17/0900 AFTERWARDS SECTOR W 4 BY 17/0900 PROB OF FOG AND MIST IN PATCHES PROB OFISOL RAIN AND SNOW MIXTURE WORSENING STARTING EVENING VIS GOOD TO MODERATE OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR N 7/6 WITH GUSTS BACK NW 5/4 BY 17/0600 AFTERWARDS NE 5/6 WITH GUSTS BY 17/1800 PROB OF FOG MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE WORSENING STARTING EARLY MORNING VIS MODERATE TO VERY POOR
GERLACHE STRAIT : NE 4/5 WITH GUSTS VEER SECTOR E 3/4 BY 17/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
MARGARITA BAY : NE 4/5 BACK SECTOR N 5/6 WITH GUSTS BY 17/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SE 5/6 VEER NW 5 WITH GUSTS BY 17/0900 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 65S: NW 6/5 BACK SW 5/4 WITH GUSTS BY 17/1200 PROB OF MIST PROB OFSCT SH SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR N 7/5 WITH GUSTS BACK SW 6/5 WITH GUSTS BY 17/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SE 4/5 VEER SECTOR S 4/3 BY 17/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EVENING VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 65S: NW 9 WITH GUSTS DECR NW 7/5 WITH GUSTS BY 17/0900 PROB OF FOG MIST PROB OFISOL RAIN AND SNOW MIXTURE IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR N 5/6 WITH GUSTS BACK NW 5/4 BY 17/0900 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR STARTING EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 7/8 WITH GUSTS DECR SE 6/5 WITH GUSTS BY 17/1500 PROB OF MIST PROB OFMOD SNOW FALL IMPR DURING THE EVENING VIS VERY POOR TO MODERATE=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-17, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 164: STRONG BARIC GRADIENT ON MOV SE WILL PROVOKE WINDS FORCE 9 FROM
SECTOR W WITH GUST BETWEEN 55S-60S 50W-60W FROM 17/1500
WARNING 163: STRONG BARIC GRADIENT ON MOV SE WILL PROVOKE WINDS FORCE 8 FROM
SECTOR W WITH GUST IN FIN DEL MUNDO COASTS DRAKE AREA (55S- 60S AND 60W- 67W)
FROM 17/1200
WARNING 162: LOW 1002HPA AT 35S 55W MOV SE NOT CHANGE PROVOKES WINDS FORCE 8
AROUND ITSELF WITH GUST BETWEEN 35S-40S 50W-60W
WARNING 161: LOW 1002HPA AT 35S 30W MOV S DEEPENING PROVOKES WINDS FORCE 8 FROM
SECTOR E WITH GUST BETWEEN 35S-45S AND 20W-30W
WARNING 160: LOW 1002HPA AT 35S 55W MOV SE NOT CHANGE PROVOKES WINDS FORCE 8
FROM SECTOR S WITH GUST IN OUTER RIO DE LA PLATA MAR DEL PLATA COASTS UNTIL
17/1200
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 1002HPA 35S 55W MOV SE NC EXP 36S 54W BY 17/1200
LOW 1002HPA 35S 30W MOV S DPN EXP 36S 30W BY 17/1200
CFNT AT 58S 61W 56S 63W 49S 68W MOV NE
161400 UTC 1.SEA ICE LIMIT 6840S 02000W 6828S 02729W 6327S 03132W 6009S 03309W
6059S 03952W 6217S 05036W 6337S 05311W 6313S 05740W 6339S 06042W 6431S 06416W
6601S 06544W 6644S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5920S 03602W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4640S 02749W 6X3NM ICEBERG2 4903S 03023W
5X3NM ICEBERG3 4629S 02736W 4X2NM ICEBERG4 4656S 02738W 3X1NM ICEBERG5 5825S
03611W 3X1NM ICEBERG6 4319S 03357W 2X1NM 4.ICEBERGS AREA A6859S 02000W 4124S
02000W 4307S 03613W 6507S 03625W B6107S 03625W 4305S 03613W 6002S 05503W 6328S
05500W C6328S 05500W 6002S 05503W 6445S 06716W 6638S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-04-18
COASTAL AREAS:
INNER RIO DE LA PLATA: SW 5/4 WITH GUSTS DECR 4/3 WITH GUSTS BY 17/1500 VIS
MODERATE TO GOOD
OUTER RIO DE LA PLATA: SW 5/6 WITH GUSTS INCR 7/8 WITH GUSTS BY 17/0300 DECR 7/6
WITH GUSTS BY 17/1200 PROB OF HVY RAIN IMPR STARTING EARLY MORNING VIS POOR TO
GOOD
URUGUAY SOUTH EAST COASTS: NW 5/6 WITH GUSTS BACK SW 6/7 GUST WITH 8 INTENSITY
BY 17/1800 PROB OF RAIN STORMS IMPR STARTING EARLY MORNING VIS MODERATE OCNL
POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 8/7 WITH GUSTS DECR 7/6 WITH
GUSTS BY 17/1200 DECR 6/5 WITH GUSTS BY 17/2100 PROB OF DRIZZLE RAIN IMPR
STARTING EARLY MORNING VIS POOR TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): NE 4 WITH GUSTS BACK SECTOR N 5/6
WITH GUSTS BY 17/0300 BACK VRB 4/3 WITH GUSTS BY 17/1200 VIS GOOD OCNL
MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 6/5 WITH GUSTS BACK SECTOR W
5/6 WITH GUSTS BY 17/0600 VEER SECTOR N 5/4 BY 17/1800 VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 6/5 WITH GUSTS BACK SECTOR W
5/6 WITH GUSTS BY 17/0600 VEER SECTOR N 5/4 BY 17/1800 VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 5/6 WITH GUSTS VEER SECTOR N 5/6
WITH GUSTS BY 17/1500 INCR 6/7 GUST WITH 8 INTENSITY BY 17/2100 PROB OF ISOL
RAIN VIS GOOD OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 5/6 WITH GUSTS INCR 7/8 WITH GUSTS
BY 17/1200 VEER SECTOR N 6/5 WITH GUSTS BY 17/1800 PROB OF ISOL RAIN VIS
MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR N 7/6 GUST WITH 8 INTENSITY BACK SECTOR W 5/4 WITH
GUSTS BY 17/1500 BACK VRB 3 BY 17/2100 PROB OF ISOL RAIN IMPR STARTING EARLY
MORNING VIS MODERATE OCNL POOR TO GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR E 8/7 WITH GUSTS BACK NE 6
WITH GUSTS BY 17/1800 PROB OF RAIN HVY STORMS VIS POOR
E OF 30 - W OF 40W: SE 5 WITH GUSTS PROB OF SH RAIN IMPR STARTING EARLY MORNING
VIS GOOD OCNL MODERATE
E OF 40 - W OF 50W: NE 5 WITH GUSTS INCR 6/7 GUST WITH 8 INTENSITY BY 17/1200
PROB OF RAIN STORMS STARTING EVENING VIS MODERATE OCNL POOR
REST OF THE AREA: NE 8/7 WITH GUSTS VEER SE 8/7 WITH GUSTS BY 17/1500 PROB OF
RAIN HVY STORMS VIS POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR E 6/7 GUST
WITH 8 INTENSITY INCR 7/8 WITH GUSTS BY 17/0600 PROB OF HVY RAIN VIS POOR OCNL
VERY POOR
E OF 30 - S OF 45S: SECTOR E 4/5 WITH GUSTS INCR 5/6 WITH GUSTS BY 17/2100 VIS
GOOD
REST OF THE AREA: SECTOR E 4 WITH GUSTS PROB OF ISOL RAIN DURING THE MORNING
VIS GOOD OCNL MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45 - E OF 50W: NE 4 WITH GUSTS
VEER SECTOR E 4/5 WITH GUSTS BY 17/1800 VIS GOOD
S OF 45 - E OF 50W: SECTOR N 4/5 WITH GUSTS VIS GOOD
REST OF THE AREA: SECTOR N 6/5 WITH GUSTS DECR 5/4 WITH GUSTS BY 17/2100 PROB
OF RAIN STORMS VIS MODERATE OCNL GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR W 5 WITH GUSTS VEER NW
5/4 WITH GUSTS BY 17/1200 VIS GOOD
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS BACK NW 6/7 GUST WITH 8 INTENSITY BY
17/1800 PROB OF RAIN STARTING NIGTH VIS GOOD TO POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR N 5/6 WITH GUSTS INCR
6/7 GUST WITH 8 INTENSITY BY 17/1500 PROB OF SH RAIN STARTING EARLY MORNING VIS
GOOD TO POOR
N OF 55 - W OF 50W: SECTOR N 6/7 GUST WITH 8 INTENSITY BACK VRB 4/3 BY 17/1800
PROB OF ISOL RAIN IMPR STARTING EVENING VIS MODERATE OCNL POOR TO GOOD
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS BACK NW 7/9 WITH GUSTS BY 17/1500
PROB OF HVY RAIN STARTING EARLY MORNING VIS POOR OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): NW 4/5 WITH GUSTS VEER SECTOR W 7/8 WITH
GUSTS BY 17/1200 VEER SECTOR N 6/5 WITH GUSTS BY 17/2100 PROB OF RAIN IMPR
TOWARDS THE END OF THE PERIOD VIS GOOD TO POOR
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