1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-30, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 182: LOW 972HPA AT 45S 48W MOV SE NOT CHANGE EXPECTED 51S 37W BY 01/1200
PROVOKES WINDS FORCE 8 FROM SECTOR E WITH GUST BETWEEN 45S-55S 35W-45W UNTIL
01/0600
WARNING 181: LOW 972HPA AT 56S 58W MOV SE NOT CHANGE EXPECTED 57S 37W BY 01/1200
PROVOKES WINDS FORCE 8 FROM SECTOR S WITH GUST IN DRAKE AREA (55S- 60S AND 60W-
67W) AND BETWEEN 55S-60S AND 55W-60W
WARNING 180: LOW 972HPA AT 45S 48W MOV SE NOT CHANGE EXPECTED 51S 37W BY 01/1200
PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST BETWEEN 40S-55S AND 40W-60W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 972HPA 56S 58W MOV SE NC EXTENDS CFNT AT 56S 58W 54S 52W 51S 49W MOV E
ASOCIATED WITH OFNT AT 56S 58W 55S 60W 54S 59W
LOW 972HPA 45S 48W MOV SE NC EXP 51S 37W BY 01/1200 EXTENDS CFNT AT 45S 48W 42S
40W 34S 47W
LOW 987HPA 49S 23W MOV SE WKN EXTENDS OFNT AT 51S 20W 49S 20W 46S 26W
301400 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 A6843S 02000W 4058S
02000W 4158S 03700W 6215S 03700W B6215S 03700W 4158S 03700W 5858S 05002W 6233S
05002W C6233S 05002W 5858S 05002W 6227S 06716W 6859S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-5-1
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3 BACK SECTOR N 3/4 MIST FOG PATCHES DISSIPATING
VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR N 3/4 MIST FOG PATCHES DISSIPATING VIS GOOD OCNL
MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR N 3/5 WITH GUSTS MIST FOG PATCHES DISSIPATING
VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): NW 3/5 WITH GUSTS VIS GOOD OCNL
MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): NW 4/6 WITH GUSTS VIS GOOD OCNL
MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): NW 3/5 BACK SW 4/6 WITH GUSTS PROB OF
ISOL SH RAIN TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): NW 4/3 BACK SW 4/6 WITH GUSTS PROB OF SH
RAIN STARTING EARLY MORNING VIS GOOD TO MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): W 4/6 WITH GUSTS BACK SECTOR S WITH GUSTS
PROB OF ISOL RAIN SNOW FALL VIS MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4/6 WITH GUSTS PROB OF RAIN SPELLS
OF GOOD WEATHER PROB OFISOL RAIN SNOW FALL VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR W 6/5 WITH GUSTS PROB OF ISOL RAIN SNOW FALL VIS
MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SW 4/6 WITH GUSTS TEMPO VEER NW 5
WITH GUSTS PROB OF ISOL SH RAIN VIS MODERATE
E OF 45W: NW 5/6 BACK W 6/4 WITH GUSTS PROB OF ISOL RAIN STORMS VIS MODERATE
REST OF THE AREA: SW 6/5 WITH GUSTS VEER NW 4/6 WITH GUSTS VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 35W: SECTOR W 6 WITH GUSTS TEMPO
VEER SECTOR N WITH GUSTS PROB OF RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL
POOR
N OF 45 - W OF 35W: SECTOR N 6 WITH GUSTS BACK SECTOR W WITH GUSTS PROB OF RAIN
SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: NE 6/8 WITH GUSTS VEER SECTOR W 5/6 GUST WITH 8 INTENSITY
PROB OF RAIN VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) S OF 45 - E OF 45W: SECTOR E 8 WITH
GUSTS VEER SECTOR W WITH GUSTS PROB OF HVY RAIN VIS POOR OCNL VERY POOR
REST OF THE AREA: SECTOR W 8/6 WITH GUSTS VEER NW 4/6 WITH GUSTS PROB OF ISOL
SH RAIN VIS POOR OCNL VERY POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR S 4 BACK SECTOR E 4/5
WITH GUSTS PROB OF RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 3 VEER SECTOR E 4/5 WITH GUSTS PROB OF RAIN AND SNOW
MIXTURE STARTING NIGTH VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 45 - N OF 55S: SECTOR E 8/6 WITH
GUSTS VEER SECTOR W 8 WITH GUSTS PROB OF RAIN VIS POOR OCNL VERY POOR
W OF 45 - N OF 55S: SECTOR E 6 GUST WITH 8 INTENSITY VEER SECTOR W 6/8 WITH
GUSTS DECR 6 PROB OF RAIN SNOW FALL VIS POOR OCNL VERY POOR
S OF 55 - W OF 55W: SECTOR W 6/8 WITH GUSTS PROB OF RAIN SNOW FALL VIS POOR
OCNL VERY POOR
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS PROB OF RAIN SNOW FALL VIS MODERATE
OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 6/8 WITH GUSTS PROB OF RAIN SNOW
FALL VIS POOR OCNL VERY POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 30, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
593/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SE GUST WITH 9 INTENSITY IN 60S-64S 63W-54W UNTIL 01/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 986HPA 69S 42W MOV E WKN
HIGH 994HPA 64S 50W MOV E WKN
RIDGE 60S 90W 65S 86W 70S 80W MOV E INTSF
WFNT AT 60S 60W 63S 50W 63S 44W MOV E DPN
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 12:00 UTC VALID UNTIL 12:00 UTC 2026-5-1
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: VRB 3 INCR SE 4/5 WITH GUSTS BY 30/1800 PROB OF MIST PROB OFISOL RAIN IMPR STARTING NOON VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SE 5/7 INCR SE 8 WITH GUSTS BY 30/1800 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: VRB 3 INCR SE 4/5 WITH GUSTS BY 30/1800 PROB OF MIST PROB OFISOL RAIN IMPR STARTING NOON VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SE 5/7 INCR SE 8 WITH GUSTS BY 30/1800 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
GERLACHE STRAIT : NE 6/5 WITH GUSTS VEER SECTOR S 3/4 BY 1/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
MARGARITA BAY : SE 4/3 BACK SECTOR E 3 BY 1/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS MODERATE TO POOR
EREBUS Y TERROR GULF : SECTOR S 5/4 WITH GUSTS BACK SE 5/4 BY 1/0000 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 4/5 DECR SW 4/3 BY 1/0000 PROB OF MIST IMPR TOWARDS NOON VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 4/5 VEER SECTOR W 5/6 BY 30/1800 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 TOWARDS NOON VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 64S: NW 5 VEER NE 5/6 BY 30/2100 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: SECTOR W 4/3 BACK SW 4 BY 30/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR TOWARDS NIGTH VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 3/4 BACK SECTOR E 4 BY 30/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS EVENING VIS MODERATE TO GOOD=