1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 30, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
592/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E 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 21:00UTC
LOW 985HPA 67S 70W MOV E WKN
LOW 982HPA 68S 44W MOV E WKN
LOW 987HPA 64S 40W MOV E DPN
HIGH 995HPA 64S 61W MOV NE WKN
RIDGE 63S 90W 65S 88W 70S 97W MOV E INTSF
291400 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 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5835S 03621W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4805S 02829W 6X3NM ICEBERG2 5022S 02628W 5X3NM ICEBERG3 4733S 02829W 2X1NM ICEBERG4 4752S 02756W 4X2NM ICEBERG5 5801S 03406W 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 00:00 UTC VALID UNTIL 00:00 UTC 2026-5-1
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: VRB 3 INCR SE 4/5 WITH GUSTS BY 30/1200 PROB OF MIST PROB OFISOL RAIN IMPR STARTING NOON VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SE 3/4 INCR SE 5/6 WITH GUSTS BY 30/0900 AFTERWARDS SE 8 WITH GUSTS BY 30/1500 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT DRIZZLE RAIN WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: VRB 3 INCR SE 4/5 WITH GUSTS BY 30/1200 PROB OF MIST PROB OFISOL RAIN IMPR STARTING NOON VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SE 4/5 INCR SE 6/7 WITH GUSTS BY 30/1200 AFTERWARDS SE 8 WITH GUSTS BY 30/1800 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT DRIZZLE RAIN WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
GERLACHE STRAIT : NE 7 WITH GUSTS DECR NE 6/5 WITH GUSTS BY 30/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE OCNL GOOD
MARGARITA BAY : NE 4/3 VEER SECTOR E 3 BY 30/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : SECTOR S 6/5 WITH GUSTS VEER SW 5/4 BY 30/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR S 4/5 VEER SW 5/4 BY 30/1200 PROB OF FOG AND MIST IN PATCHES IMPR STARTING EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 4/5 VEER SECTOR W 5/6 BY 30/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 4/5 VEER NW 5/6 BY 30/1800 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: NW 6/5 WITH GUSTS BACK SE 5/4 BY 30/0900 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NW 4/5 WITH GUSTS BACK SECTOR W 5/4 BY 30/0900 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR TOWARDS NOON VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 3/4 BACK SE 4/5 BY 30/2100 PROB OF ISOL SNOW FALL IMPR TOWARDS EVENING VIS MODERATE TO GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-30, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 181: LOW 978HPA AT 54S 58W MOV S DEEPENING WILL PROVOKE WINDS FORCE 8
AROUND ITSELF WITH GUST IN FIN DEL MUNDO COASTS ISLAS MALVINAS COASTS DRAKE AREA
(55S- 60S AND 60W- 67W) BETWEEN 50S-60S 50W-60W FROM 30/1200
WARNING 180: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST IN CENTRAL WEST AREA (40S- 50S AND 40W- 60W)
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 984HPA 49S 25W MOV E WKN EXTENDS OFNT AT 51S 20W 51S 28W 47S 30W ASOCIATED
WITH CFNT AT 41S 20W 39S 24W 36S 32W
LOW 987HPA 46S 53W MOV SE DPN EXP 50S 40W BY 30/2300 EXTENDS CFNT AT 46S 53W 42S
49W 37S 51W MOV E
LOW 978HPA 54S 58W MOV S DPN EXTENDS CFNT AT 54S 57W 49S 54W 42S 53W 39S 56W
LOW 981HPA 56S 71W MOV NE WKN EXTENDS CFNT AT 57S 70W 51S 65W 48S 67W
291400 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 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5835S 03621W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4805S 02829W 6X3NM ICEBERG2 5022S 02628W
5X3NM ICEBERG3 4733S 02829W 2X1NM ICEBERG4 4752S 02756W 4X2NM ICEBERG5 5801S
03406W 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 00:00 UTC VALID UNTIL 00:00 UTC 2026-5-1
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 3 VEER SECTOR N 3 BY 30/0900 PROB OF MIST DURING THE
MORNING VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SW 4 VRB 3 BY 30/0600 SECTOR N 3 BY 30/0900 VIS GOOD
URUGUAY SOUTH EAST COASTS: SW 4 VRB 3 BY 30/1200 NE 3/4 BY 30/1800 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SW 5/4 VEER SECTOR N 4/5 BY 30/1500 LOW
PROB OF ISOL RAIN IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR W 5 VEER NW 5 WITH GUSTS BY
30/1200 VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 5/4 VEER NW 4 BY 30/1800 VIS
GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 5 LOW PROB OF ISOL RAIN DURING
THE EARLY MORNING VIS MODERATE TO GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 6 GUST WITH 8 INTENSITY DECR 5 BY
30/2100 PROB OF SH RAIN NXT RAIN AND SNOW MIXTURE VIS POOR OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SW 6 GUST WITH 8 INTENSITY INCR 7/8 WITH
GUSTS BY 30/1800 PROB OF RAIN AND SNOW MIXTURE VIS MODERATE TO POOR
ISLAS MALVINAS COASTS: SW 6 GUST WITH 8 INTENSITY INCR 8 WITH GUSTS BY 30/1800
PROB OF DRIZZLE RAIN VIS POOR OCNL MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR W 4 BACK SW 5 WITH GUSTS BY
30/2100 PROB OF RAIN ISOL STORMS DURING THE EVENING VIS GOOD TO MODERATE OCNL
POOR
E OF 45W: NW 6 GUST WITH 8 INTENSITY BACK SW 5 WITH GUSTS BY 30/1500 PROB OF
RAIN STORMS IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO GOOD
REST OF THE AREA: SW 6 GUST WITH 8 INTENSITY VEER W 5/4 BY 30/1200 PROB OF SH
RAIN IMPR STARTING EARLY MORNING VIS POOR TO GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR W 6 GUST WITH 8
INTENSITY TEMPO VEER SECTOR N PROB OF RAIN STORMS NXT SH RAIN VIS POOR OCNL
MODERATE
E OF 30 - S OF 45S: SW 6 GUST WITH 8 INTENSITY DECR 5 BY 30/1800 SECTOR N 5
WITH GUSTS BY 30/2100 PROB OF DRIZZLE RAIN VIS POOR OCNL MODERATE
REST OF THE AREA: VRB 5 NE 6 GUST WITH 8 INTENSITY BY 30/0600 BACK W 7 GUST
WITH 8 INTENSITY BY 30/1500 PROB OF SH RAIN VIS POOR OCNL MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR N 7/8 WITH GUSTS BACK
SECTOR W 8 WITH GUSTS BY 30/0600 PROB OF RAIN HVY SH NEXT ISOL RAIN VIS VERY
POOR TO POOR
REST OF THE AREA: SECTOR W 8/7 WITH GUSTS DECR 6/5 WITH GUSTS BY 30/2100 PROB
OF SH RAIN IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30 - N OF 55S: SE 6/5 WITH GUSTS E
4 BY 30/1500 PROB OF DRIZZLE RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: VRB 3 SECTOR E 4/5 WITH GUSTS WORSENING WITH PROB OF DRIZZLE
RAIN VIS GOOD TO MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: NE 6/7 GUST WITH 8 INTENSITY
WORSENING WITH PROB OF HVY RAIN VIS MODERATE TO POOR
W OF 50 - N OF 55S: SECTOR W 6 GUST WITH 8 INTENSITY INCR 8 WITH GUSTS BY
30/1800 PROB OF SH RAIN VIS POOR OCNL MODERATE
REST OF THE AREA: NE 6 GUST WITH 8 INTENSITY VRB 6 GUST WITH 8 INTENSITY BY
30/1500 PROB OF HVY RAIN VIS POOR OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 7 GUST WITH 8 INTENSITY VEER SW 8
WITH GUSTS BY 30/1200 PROB OF HVY RAIN NXT RAIN AND SNOW MIXTURE VIS POOR OCNL
VERY POOR
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