1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-03-18, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 114: LOW 978HPA AT 54S 60W MOV SE WEAKENING PROVOKES WINDS FORCE 8 FROM
SECTOR W WITH GUST IN ISLAS MALVINAS COASTS BETWEEN 50S-55S AND 50W-60W UNTIL
19/0000
WARNING 112: LOW 978HPA AT 54S 60W MOV SE WEAKENING PROVOKES WINDS FORCE 8 FROM
SECTOR W WITH GUST IN SOUTH PATAGONIA COASTS FIN DEL MUNDO COASTS UNTIL
18/1800
WARNING 111: LOW 981HPA AT 56S 47W MOV SE DEEPENING EXPECTED 59S 32W BY 19/1200
PROVOKES WINDS FORCE 8 AROUND ITSELF WITH GUST BETWEEN 55S-60S AND 30W-50W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
171400 UTC 1.SEA ICE LIMIT 7154S 02000W 6600S 03005W 6737S 03005W 6144S 03252W
6050S 03918W 6145S 04430W 6205S 04951W 6346S 05402W 6307S 05725W 6354S 06153W
6440S 06432W 6632S 06716W 2.ICEBERGS GREATER THAN 10NM A23K 5037S 03505W 10X7NM
A76C 5906S 03629W 16X7NM 3.ICEBERGS SMALLER THAN 10NM A23A 4837S 03038W 9X7NM
ICEBERG1 5801S 03547W 3X2NM ICEBERG2 5928S 04900W 2X1NM ICEBERG3 4846S 03326W
3X2NM ICEBERG4 5234S 03322W 7X2NM ICEBERG5 4722S 03117W 3X1NM ICEBERG6 4843S
03136W 4X2NM ICEBERG7 4852S 03111W 4X1NM ICEBERG8 4847S 03054W 3X2NM ICEBERG9
4846S 03034W 2X2NM 4.ICEBERGS AREA A 6400S 02000W 4700S 02000W 4400S 03100W
6600S 03100W B 6600S 03100W 4500S 03100W 4500S 04200W 6151S 04200W C 6151S
04200W 5700S 04200W 5900S 05700W 6313S 05700W D 6313S 05700W 6000S 05700W 6500S
06716W 6700S 06716W
LOW 981HPA 56S 47W MOV SE DPN EXP 59S 52W BY 19/1200 EXTENDS CFNT AT 56S 47W 43S
45W 35S 41W MOV E
LOW 978HPA 54S 60W MOV SE WKN EXTENDS OFNT AT 56S 47W 55S 67W 53S 62W
HIGH 1017HPA 38S 60W MOV SE WKN
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-03-19
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 3/4 BACK SECTOR E 4/3 PROB OF ISOL DRIZZLE
DURING THE MORNING VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR S 3/4 BACK SECTOR E 4/3 PROB OF ISOL DRIZZLE
DURING THE MORNING VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR S 3/5 WITH GUSTS DECR 4/3 PROB OF ISOL RAIN
IMPR STARTING NIGTH VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 4 BACK SECTOR E 3/4 VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 3/4 INCR 5/6 WITH GUSTS BY
19/0600 PROB OF RAIN STORMS VIS GOOD TO MODERATE OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 4 VEER SECTOR N 5/6 WITH GUSTS
PROB OF RAIN STORMS TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE OCNL
POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 4/5 WITH GUSTS VEER SECTOR N
5/6 WITH GUSTS PROB OF ISOL RAIN TOWARDS THE END OF THE PERIOD VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 8 WITH GUSTS DECR 5/4 WITH GUSTS
BY 18/1800 BACK SECTOR S 3 PROB OF ISOL RAIN IMPR TOWARDS EARLY MORNING VIS POOR
TO MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 8 WITH GUSTS DECR 6/5 WITH GUSTS BY
18/1800 BACK SECTOR S 3/4 PROB OF ISOL RAIN VIS POOR TO MODERATE
ISLAS MALVINAS COASTS: SECTOR W 8 WITH GUSTS DECR 6/5 WITH GUSTS BY 19/0000 BACK
SECTOR S 3 PROB OF RAIN IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO
MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR E 5/4 WITH GUSTS PROB OF
ISOL RAIN TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
E OF 50W: SECTOR N 4/3 PROB OF ISOL SH RAIN VIS MODERATE
REST OF THE AREA: SECTOR S 5/4 WITH GUSTS BACK SECTOR E 3 PROB OF SH RAIN IMPR
STARTING NIGTH VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45 - E OF 30W: SECTOR N 3 VIS
GOOD
S OF 45 - E OF 30W: NW 4/5 WITH GUSTS PROB OF ISOL RAIN TOWARDS THE END OF THE
PERIOD VIS GOOD OCNL MODERATE
W OF 30 - N OF 45S: SECTOR N 4/3 VEER SECTOR E 3 PROB OF ISOL RAIN TOWARDS THE
END OF THE PERIOD VIS GOOD OCNL MODERATE
REST OF THE AREA: NW 6/5 WITH GUSTS BACK SECTOR W 3/4 PROB OF RAIN SPELLS OF
GOOD WEATHER VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45 - E OF 50W: SECTOR N 5/4 WITH
GUSTS BACK SECTOR S 4/5 WITH GUSTS BACK SECTOR E 4 PROB OF RAIN SPELLS OF GOOD
WEATHER VIS MODERATE
S OF 45 - E OF 50W: SW 4 VEER NW 5/6 WITH GUSTS PROB OF RAIN STARTING EARLY
MORNING IMPR VIS MODERATE
N OF 45 - W OF 50W: SECTOR S 4 VEER SECTOR N 4/6 WITH GUSTS VIS GOOD OCNL
MODERATE
REST OF THE AREA: NW 6/5 WITH GUSTS VIS MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR W 5/4 WITH GUSTS VEER
SECTOR N 5/6 WITH GUSTS BACK SECTOR W 6 WITH GUSTS PROB OF DRIZZLE SPELLS OF
GOOD WEATHER VIS MODERATE OCNL POOR
N OF 55 - W OF 30W: NW 6 GUST WITH 8 INTENSITY PROB OF RAIN IMPR TOWARDS THE
END OF THE PERIOD VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 8 WITH GUSTS BACK SECTOR W 8/6 WITH GUSTS VEER
SECTOR N 8 WITH GUSTS PROB OF RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL VERY
POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55 - E OF 50W: SECTOR E 8 WITH
GUSTS VEER SECTOR W 8/6 WITH GUSTS DECR SECTOR S 5 WITH GUSTS BY 19/0900 PROB OF
RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL VERY POOR
N OF 55 - E OF 50W: NW 6/5 GUST WITH 8 INTENSITY PROB OF ISOL RAIN TOWARDS THE
END OF THE PERIOD VIS MODERATE OCNL POOR
S OF 55 - W OF 50W: SECTOR E 6 WITH GUSTS VEER SECTOR S 5/4 WITH GUSTS PROB OF
RAIN SPELLS OF GOOD WEATHER VIS MODERATE
REST OF THE AREA: SECTOR W 8 WITH GUSTS DECR 6/4 WITH GUSTS BY 19/0000 PROB OF
ISOL DRIZZLE IMPR TOWARDS THE END OF THE PERIOD VIS POOR OCNL VERY POOR TO
MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SE 6/5 WITH GUSTS VEER S 4/3 PROB OF ISOL
RAIN IMPR STARTING EARLY MORNING VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 18, MARCH 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
360/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR E WITH GUST IN 60S-62S 70W-58W UNTIL 18/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
RIDGE 60S 90W 64S 81W 68S 75W MOV NE WKN
LOW 992HPA 67S 44W MOV E WKN
171400 UTC 1.SEA ICE LIMIT 7154S 02000W 6600S 03005W 6737S 03005W 6144S 03252W 6050S 03918W 6145S 04430W 6205S 04951W 6346S 05402W 6307S 05725W 6354S 06153W 6440S 06432W 6632S 06716W 2.ICEBERGS GREATER THAN 10NM A23K 5037S 03505W 10X7NM A76C 5906S 03629W 16X7NM 3.ICEBERGS SMALLER THAN 10NM A23A 4837S 03038W 9X7NM ICEBERG1 5801S 03547W 3X2NM ICEBERG2 5928S 04900W 2X1NM ICEBERG3 4846S 03326W 3X2NM ICEBERG4 5234S 03322W 7X2NM ICEBERG5 4722S 03117W 3X1NM ICEBERG6 4843S 03136W 4X2NM ICEBERG7 4852S 03111W 4X1NM ICEBERG8 4847S 03054W 3X2NM ICEBERG9 4846S 03034W 2X2NM 4.ICEBERGS AREA A 6400S 02000W 4700S 02000W 4400S 03100W 6600S 03100W B 6600S 03100W 4500S 03100W 4500S 04200W 6151S 04200W C 6151S 04200W 5700S 04200W 5900S 05700W 6313S 05700W D 6313S 05700W 6000S 05700W 6500S 06716W 6700S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-03-19
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR E 7/8 WITH GUSTS VEER SE 6/5 BY 18/1800 PROB OF MIST PROB OFISOL DRIZZLE RAIN IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR E 6/7 WITH GUSTS VEER SE 6 WITH GUSTS BY 18/1500 PROB OF MIST PROB OFMOD DRIZZLE RAIN IMPR DURING THE EVENING VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SECTOR E 6/7 WITH GUSTS VEER SE 6/5 WITH GUSTS BY 18/1500 PROB OF MIST PROB OFMOD DRIZZLE RAIN IMPR DURING THE EVENING VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR E 4/5 BACK NE 5 BY 18/2100 PROB OF FOG MIST PROB OFISOL RAIN SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS VERY POOR TO MODERATE
GERLACHE STRAIT : SECTOR S 3/4 VEER NW 4 BY 19/0300 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO POOR
MARGARITA BAY : SECTOR S 3 VEER SECTOR N 3/4 BY 19/0300 PROB OF MIST IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SECTOR S 4/5 VEER NE 4/5 BY 19/0600 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 66S: SECTOR S 4/5 VEER SW 4 BY 18/2100 PROB OF MIST FOG PATCHES PROB OFISOL RAIN IMPR DURING THE MORNING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR S 3/4 VEER NW 4/5 BY 18/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 3/4 VEER NW 4/5 BY 18/1500 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: NE 4/5 VEER SECTOR E 6/7 WITH GUSTS BY 18/1500 AFTERWARDS SE 5/4 BY 19/0000 PROB OF MIST FOG PATCHES PROB OFMOD RAIN AND SNOW MIXTURE IMPR DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SW 3/4 BACK SECTOR S 4 BY 18/2100 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SW 3/4 BACK SE 4/3 BY 18/1800 PROB OF MIST IMPR TOWARDS NOON VIS MODERATE TO GOOD=