1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 29, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
591/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV SE DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SE GUST WITH 9 INTENSITY IN 60S-64S 63W-54W FROM 30/0600 UNTIL 30/2300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 973HPA 67S 76W MOV SE DPN
LOW 972HPA 67S 52W MOV SE DPN
HIGH 988HPA 67S 52W MOV NE WKN
281400 UTC 1.SEA ICE LIMIT 6833S 02000W 6648S 02845W 6311S 03120W 6508S 03309W 6159S 03802W 6301S 04248W 6208S 05113W 6224S 05316W 6308S 05713W 6336S 06028W 6426S 06356W 6645S 06717W 2.ICEBERGS GREATER THAN 10NM A76C 5835S 03622W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4805S 02829W 6X3NM ICEBERG2 5022S 02628W 5X3NM ICEBERG3 4733S 02829W 2X1NM ICEBERG4 4752S 02756W 4X2NM ICEBERG5 5755S 03443W 3X1NM ICEBERG6 5828S 03616W 2X1NM 4.ICEBERGS AREA A6845S 02000W 4350S 02000W 4210S 03000W 6300S 04245W B6300S 04245W 4300S 03015W 4140S 03630W 4949S 04130W 6235S 05110W C6235S 05110W 5829S 04735W 6125S 06716W 6815S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-30
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 3 BACK SE 4/5 BY 30/0300 PROB OF MIST PROB OFISOL RAIN WORSENING TOWARDS NIGTH VIS MODERATE TO POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR E 3/4 VEER SE 5/6 WITH GUSTS BY 30/0000 AFTERWARDS SE 8 WITH GUSTS BY 30/0600 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT DRIZZLE RAIN WORSENING DURING THE EVENING VIS MODERATE TO VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 3 BACK SE 4/5 BY 30/0300 PROB OF MIST PROB OFISOL RAIN WORSENING TOWARDS NIGTH VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR E 3/4 VEER SE 5/6 WITH GUSTS BY 30/0000 AFTERWARDS SE 8 WITH GUSTS BY 30/0600 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT DRIZZLE RAIN WORSENING DURING THE EVENING VIS MODERATE TO VERY POOR
GERLACHE STRAIT : NE 7 WITH GUSTS DECR NE 6/5 WITH GUSTS BY 30/0300 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
MARGARITA BAY : NE 4/3 VEER SECTOR E 3 BY 30/0000 VIS GOOD
EREBUS Y TERROR GULF : SW 6/5 WITH GUSTS BACK SECTOR S 5/4 BY 30/0000 PROB OF MIST PROB OFCOASTAL BLIZZARD IMPR DURING THE MORNING VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR S 4/5 INCR SECTOR S 6/7 BY 30/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL DRIZZLE RAIN IMPR DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR S 4/5 INCR SECTOR S 6/7 BY 30/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL DRIZZLE RAIN IMPR DURING THE EVENING VIS VERY POOR TO MODERATE OCNL VERY POOR TO POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR S 4/5 VEER SW 5/6 BY 29/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 4/5 INCR SW 6 WITH GUSTS BY 29/1800 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 64S: SECTOR N 7/5 GUST WITH 8 INTENSITY BACK NW 5/6 WITH GUSTS BY 29/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NW 5/6 WITH GUSTS BACK SECTOR W 5/4 BY 30/0000 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR DURING THE EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 6/5 BACK SECTOR E 5/4 BY 29/2100 PROB OF MIST IMPR TOWARDS NOON VIS MODERATE TO GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-29, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 180: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH
GUST IN CENTRAL WEST AREA (40S- 50S AND 40W- 60W) FROM 29/1800
WARNING 179: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN
RINCON BAHIA BLANCA COASTS PENINSULA DE VALDES COASTS GOLFO DE SAN JORGE
COASTS
PART 2 GENERAL SYNOPSIS AT 09:00UTC
281400 UTC 1.SEA ICE LIMIT 6833S 02000W 6648S 02845W 6311S 03120W 6508S 03309W
6159S 03802W 6301S 04248W 6208S 05113W 6224S 05316W 6308S 05713W 6336S 06028W
6426S 06356W 6645S 06717W 2.ICEBERGS GREATER THAN 10NM A76C 5835S 03622W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4805S 02829W 6X3NM ICEBERG2 5022S 02628W
5X3NM ICEBERG3 4733S 02829W 2X1NM ICEBERG4 4752S 02756W 4X2NM ICEBERG5 5755S
03443W 3X1NM ICEBERG6 5828S 03616W 2X1NM 4.ICEBERGS AREA A6845S 02000W 4350S
02000W 4210S 03000W 6300S 04245W B6300S 04245W 4300S 03015W 4140S 03630W 4949S
04130W 6235S 05110W C6235S 05110W 5829S 04735W 6125S 06716W 6815S 06716W
LOW 981HPA 53S 63W MOV SE DPN EXP 57S 59W BY 30/1200 EXTENDS CFNT AT 53S 63W 48S
60W 39S 60W MOV E
LOW 980HPA 49S 25W MOV SE NC
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-30
COASTAL AREAS:
INNER RIO DE LA PLATA: NW 6/7 WITH GUSTS BACK SECTOR S 4/5 BY 30/0000 VIS
MODERATE TO GOOD
OUTER RIO DE LA PLATA: NW 6/7 WITH GUSTS BACK SECTOR S 4/5 BY 30/0000 VIS
MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: SECTOR W 6/7 WITH GUSTS DECR 4/5 BY 30/0300 VIS
MODERATE TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR W 6/7 WITH GUSTS DECR 5/6 BY
30/0300 VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR W 8 WITH GUSTS DECR 5/6 WITH
GUSTS BY 30/0300 PROB OF RAIN VIS VERY POOR TO POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 8 WITH GUSTS DECR 5/6 WITH
GUSTS BY 30/0300 PROB OF RAIN VIS VERY POOR TO POOR.
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 8 WITH GUSTS DECR 5/6 WITH
GUSTS BY 30/0300 PROB OF RAIN VIS VERY POOR TO POOR.
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 6/7 WITH GUSTS PROB OF SH RAIN VIS
POOR OCNL VERY POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 6/7 WITH GUSTS PROB OF SH RAIN VIS
POOR OCNL VERY POOR.
ISLAS MALVINAS COASTS: SECTOR N 6/7 WITH GUSTS VEER SECTOR W WITH GUSTS BY
29/2100 PROB OF SH RAIN VIS POOR OCNL VERY POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR W 5/6 WITH GUSTS PROB OF SH
RAIN VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS INCR 6/7 GUST WITH 8 INTENSITY BY
29/1800 PROB OF SH RAIN VIS MODERATE TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR W 6/7 GUST WITH 8 INTENSITY
PROB OF SH RAIN VIS POOR OCNL VERY POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR N 5/6 WITH GUSTS BACK SECTOR W
8 WITH GUSTS BY 29/1800 PROB OF SH RAIN VIS MODERATE TO VERY POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 45S: SECTOR E 6/7 WITH GUSTS VEER
SECTOR S WITH GUSTS BY 29/1800 PROB OF RAIN VIS POOR
REST OF THE AREA: SECTOR N 3/4 PROB OF ISOL RAIN VIS GOOD OCNL MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR N 4/5 WITH GUSTS VEER NE 5/6
WITH GUSTS PROB OF SH RAIN VIS MODERATE TO POOR OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 4/5 WITH GUSTS INCR 6/7 GUST WITH 8
INTENSITY BY 30/0900 PROB OF SH RAIN VIS GOOD TO POOR OCNL VERY POOR
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