1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-04-19, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 166: LOW 990HPA AT 49S 58W MOV SE DEEPENING WILL PROVOKE WINDS FORCE 8
FROM SECTOR W WITH GUST IN ISLAS MALVINAS COASTS BETWEEN 45S-60S AND 50W-60W
FROM 19/1800
WARNING 165: LOW 990HPA AT 49S 58W MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM
SECTOR S WITH GUST IN GOLFO DE SAN JORGE COASTS SOUTH PATAGONIA COASTS UNTIL
19/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 990HPA 49S 58W MOV SE DPN EXP 55S 47W BY 20/1200 EXTENDS CFNT AT 49S 58W 41S
45W 35S 60W MOV E
LOW 1002HPA 40S 49W MOV E WKN EXTENDS OFNT AT 40S 49W 39S 50W 38S 48W
LOW 1002HPA 41S 28W MOV SE NC EXTENDS OFNT AT 47S 28W 40S 35W 37S 31W MOV SE
181400 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 5911S 03550W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4623S 02814W 6X3NM ICEBERG2 4848S 03004W
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 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-20
COASTAL AREAS:
INNER RIO DE LA PLATA: NW 3 BACK SECTOR S BACK SECTOR E 4 WITH GUSTS PROB OF
DRIZZLE TOWARDS THE END OF THE PERIOD VIS GOOD
OUTER RIO DE LA PLATA: SECTOR W 3 BACK SECTOR E 5 WITH GUSTS VIS GOOD OCNL
MODERATE
URUGUAY SOUTH EAST COASTS: SW 3 BACK SECTOR E VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR W 3 BACK SECTOR S 4/5 WITH GUSTS
BACK SECTOR E 4/3 PROB OF RAIN STARTING EARLY MORNING VIS GOOD TO MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SW 3/4 BACK SECTOR E 3 PROB OF ISOL
RAIN SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SW 6/5 WITH GUSTS VEER SECTOR W 3/4
PROB OF ISOL RAIN STARTING EARLY MORNING VIS MODERATE TO GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SW 8 WITH GUSTS DECR 6/5 BY 19/1500 VEER
SECTOR W 5/6 WITH GUSTS PROB OF ISOL RAIN STARTING EARLY MORNING VIS POOR TO
GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SW 8 WITH GUSTS DECR 6/5 BY 19/1500 VEER
SECTOR W 5/6 WITH GUSTS PROB OF HVY RAIN STARTING EARLY MORNING PROB OFISOL RAIN
TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 6 WITH GUSTS VEER SECTOR W 5/6 WITH
GUSTS PROB OF RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR S 6 WITH GUSTS VEER SECTOR W 6/8 WITH GUSTS BY
19/1800 DECR 6/5 BY 20/0600 PROB OF HVY RAIN IMPR TOWARDS NIGTH VIS POOR OCNL
VERY POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: NW 5/3 WITH GUSTS PROB OF ISOL SH
RAIN VIS MODERATE
E OF 45W: NE 3 BACK SECTOR S 3/4 PROB OF ISOL RAIN STORMS VIS GOOD OCNL
MODERATE
REST OF THE AREA: SW 6/5 WITH GUSTS BACK S 4/3 PROB OF ISOL SH RAIN IMPR
TOWARDS NIGTH VIS MODERATE OCNL POOR TO GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR E 6 WITH GUSTS VEER
SECTOR N WITH GUSTS PROB OF RAIN STORMS VIS POOR OCNL VERY POOR
REST OF THE AREA: SECTOR E 4/3 VEER SECTOR W 3/4 WITH GUSTS PROB OF ISOL RAIN
VIS GOOD OCNL MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR N 5 WITH GUSTS BACK
SECTOR W 5/6 WITH GUSTS PROB OF ISOL RAIN STORMS VIS MODERATE OCNL POOR
N OF 45 - W OF 50W: W 5/6 WITH GUSTS BACK SW 5/4 WITH GUSTS PROB OF ISOL RAIN
IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 5/4 WITH GUSTS PROB OF ISOL SH RAIN VIS MODERATE
OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR N 3/5 WITH GUSTS PROB OF RAIN
SPELLS OF GOOD WEATHER VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR N 5/6 WITH GUSTS PROB
OF RAIN VIS MODERATE OCNL POOR
N OF 55 - W OF 50W: SECTOR N 5/6 WITH GUSTS VEER SECTOR W 8/6 WITH GUSTS BY
19/1800 PROB OF HVY RAIN VIS POOR OCNL VERY POOR
REST OF THE AREA: SECTOR S 3/4 INCR 5/6 WITH GUSTS BY 19/2100 VEER SECTOR W 6/8
WITH GUSTS BY 20/0600 PROB OF HVY RAIN STARTING EVENING VIS GOOD TO POOR OCNL
GOOD TO VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 6/5 WITH GUSTS VEER SECTOR N 5/6
WITH GUSTS PROB OF RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 19, APRIL 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
544/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM NE WITH GUST IN 60S-64S 44W-30W UNTIL 19/2100
545/2026 STRONG BARIC GRADIENT ON NORTHERN WEDDELL SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR N WITH GUST IN 65S-69S 50W-40W UNTIL 19/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 984HPA 70S 50W MOV SE DPN
LOW 976HPA 63S 90W MOV SE DPN
HIGH 1000HPA 61S 59W MOV E INTSF
181400 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 5911S 03550W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4623S 02814W 6X3NM ICEBERG2 4848S 03004W 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 12:00 UTC VALID UNTIL 12:00 UTC 2026-04-20
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NW 3/4 VEER SECTOR N 4/5 BY 19/1500 AFTERWARDS NE 5/6 BY 20/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL RAIN WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL VERY POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 4/3 BACK SE 4/5 BY 20/0000 PROB OF MIST PROB OFISOL RAIN IMPR DURING THE MORNING VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 60W: NW 3/4 VEER SECTOR N 4/5 BY 19/1500 AFTERWARDS NE 5/6 BY 20/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL RAIN WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 4/3 BACK SE 4/5 BY 20/0000 PROB OF MIST PROB OFISOL RAIN IMPR DURING THE MORNING VIS MODERATE TO GOOD
GERLACHE STRAIT : NE 5/6 WITH GUSTS INCR NE 7 BY 20/0600 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NIGTH VIS MODERATE TO GOOD
MARGARITA BAY : SECTOR N 4/5 VEER NE 5/6 BY 20/0300 PROB OF ISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 3/4 BACK NE 4/5 BY 20/0300 PROB OF FOG AND MIST IN PATCHES WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 65S: SECTOR N 6/7 WITH GUSTS VEER NE 5/6 BY 19/1800 PROB OF MIST PROB OFINTERMITTENT RAIN SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NE 4/5 VEER SECTOR E 6/7 BY 19/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE NIGTH VIS GOOD TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NE 4 VEER SECTOR E 4/5 BY 19/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EVENING VIS POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 65S: SECTOR N 6/7 WITH GUSTS BACK NW 5/4 BY 19/1800 PROB OF MIST PROB OFINTERMITTENT RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NW 6/5 VEER SECTOR W 4 BY 19/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE MORNING VIS GOOD TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 6/5 GUST WITH 8 INTENSITY VEER SE 5/4 BY 19/2100 PROB OF MIST PROB OFMOD SNOW FALL IMPR DURING THE NIGTH VIS MODERATE TO GOOD =