1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 22, MARCH 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
374/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV SE WEAKENING PROVOKES WINDS FORCE 8 GUST WITH 9 INTENSITY IN 63S-66S 40W-30W UNTIL 22/1500
375/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM NE GUST WITH 9 INTENSITY IN 60S-64S 90W-70W FROM 23/0300 UNTIL 24/0000
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 971HPA 72S 85W MOV SE WKN
LOW 988HPA MOV SE DPN
LOW 996HPA 61S 52W MOV SE WKN
HIGH 991HPA 69S 57W MOV E WKN EXTENDS RIDGE AT 69S 57W 65S 44W 60S 40W MOV E
221400 UTC 1.SEA ICE LIMIT 7156S 02000W 7021S 02830W 6804S 03032W 7245S 03044W 6118S 03316W 6521S 03319W 6144S 04115W 6129S 04355W 6213S 04949W 6437S 05542W 6416S 06354W 6634S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5849S 03623W 16X7NM 3.ICEBERGS SMALLER THAN 10NM A23A 4831S 03037W 9X7NM A23K 5008S 03403W 10X7NM ICEBERG1 5816S 03529W 3X2NM ICEBERG2 4837S 03323W 3X2NM ICEBERG3 5218S 03239W 7X2NM ICEBERG4 4733S 03053W 3X1NM ICEBERG5 4749S 03112W 4X2NM ICEBERG6 4829S 03007W 4X1NM ICEBERG7 4834S 03007W 3X2NM ICEBERG8 4831S 03010W 2X2NM ICEBERG9 4528S 02955W 3X2NM 4.ICEBERGS AREA A 6500S 02000W 4600S 02000W 4600S 03700W 6135S 03700W B 6135S 03700W 4600S 03700W 5700S 05000W 6230S 05000W C 6230S 05000W 5700S 05000W 6500S 06716W 6700S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-03-23
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 4/5 VEER NW 5/6 BY 23/0000 PROB OF MIST PROB OFMOD DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT : SW 5/4 VEER SECTOR W 4 BY 22/2100 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER STARTING EVENING VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 4/5 VEER NW 5/6 BY 23/0000 PROB OF MIST PROB OFMOD DRIZZLE RAIN SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 5/4 VEER SECTOR W 4 BY 22/2100 PROB OF MIST PROB OFINTERMITTENT DRIZZLE RAIN SPELLS OF GOOD WEATHER STARTING EVENING VIS MODERATE TO GOOD
GERLACHE STRAIT : SECTOR N 3/4 INCR NE 5/7 WITH GUSTS BY 23/0300 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS GOOD TO MODERATE
MARGARITA BAY : NE 5/4 WITH GUSTS BACK NW 4/3 BY 22/1500 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SECTOR S 3/4 BACK NE 4/3 BY 23/0000 PROB OF MIST VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 65S: SECTOR W 4/5 INCR NE 7/8 BY 23/0300 PROB OF MIST FOG PATCHES PROB OFINTERMITTENT DRIZZLE RAIN WORSENING DURING THE EVENING VIS GOOD TO MODERATE OCNL VERY POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 5/6 WITH GUSTS VEER NW 4/5 BY 22/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NW 5/7 WITH GUSTS BACK SW 5 BY 22/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO VERY POOR
NORTHERN WEDDELL SEA W OF 40W: NW 5/4 WITH GUSTS BACK SECTOR W 4/3 BY 22/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EVENING VIS POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NW 8/7 WITH GUSTS DECR SECTOR W 5/4 BY 22/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 4/5 WITH GUSTS VEER SECTOR S 5/4 BY 22/2100 PROB OF MIST FOG PATCHES PROB OFMOD SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-03-22, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 119: LOW 981HPA AT 45S 53W MOV SE DEEPENING EXPECTED 55S 41W BY 23/1200
PROVOKES WINDS FORCE 8 AROUND ITSELF WITH GUST IN CENTRAL WEST AREA (40S- 50S
AND 40W- 60W)
PART 2 GENERAL SYNOPSIS AT 09:00UTC
221400 UTC 1.SEA ICE LIMIT 7156S 02000W 7021S 02830W 6804S 03032W 7245S 03044W
6118S 03316W 6521S 03319W 6144S 04115W 6129S 04355W 6213S 04949W 6437S 05542W
6416S 06354W 6634S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5849S 03623W 16X7NM
3.ICEBERGS SMALLER THAN 10NM A23A 4831S 03037W 9X7NM A23K 5008S 03403W 10X7NM
ICEBERG1 5816S 03529W 3X2NM ICEBERG2 4837S 03323W 3X2NM ICEBERG3 5218S 03239W
7X2NM ICEBERG4 4733S 03053W 3X1NM ICEBERG5 4749S 03112W 4X2NM ICEBERG6 4829S
03007W 4X1NM ICEBERG7 4834S 03007W 3X2NM ICEBERG8 4831S 03010W 2X2NM ICEBERG9
4528S 02955W 3X2NM 4.ICEBERGS AREA A 6500S 02000W 4600S 02000W 4600S 03700W
6135S 03700W B 6135S 03700W 4600S 03700W 5700S 05000W 6230S 05000W C 6230S
05000W 5700S 05000W 6500S 06716W 6700S 06716W
LOW 981HPA 45S 53W MOV SE DPN EXP 45S 51W BY 23/1200 EXTENDS CFNT AT 45S 53W 39S
49W 36S 50W MOV E
HIGH 1023HPA 42S 24W MOV E INTSF
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-03-23
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR W 4/5 WITH GUSTS BACK SECTOR E BY 22/1500 FOG AND
MIST IN PATCHES DISSIPATING PROB OF SH RAIN TOWARDS THE END OF THE PERIOD VIS
MODERATE OCNL POOR
OUTER RIO DE LA PLATA: SECTOR W 4/5 WITH GUSTS BACK SECTOR E BY 22/1500 FOG AND
MIST IN PATCHES DISSIPATING PROB OF SH RAIN TOWARDS THE END OF THE PERIOD VIS
MODERATE OCNL POOR
URUGUAY SOUTH EAST COASTS: SECTOR W 4/5 WITH GUSTS BACK SECTOR E BY 22/1500 FOG
AND MIST IN PATCHES DISSIPATING PROB OF SH RAIN TOWARDS THE END OF THE PERIOD
VIS MODERATE OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR W 3/4 BACK SECTOR E BY 22/1500 VIS
GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR W 4/5 PROB OF RAIN TOWARDS THE
END OF THE PERIOD VIS GOOD TO MODERATE OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 4/5 VEER SECTOR N BY 23/0300
PROB OF SH RAIN VIS GOOD TO MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 5/6 WITH GUSTS VEER SECTOR N BY
23/0900 RAIN VIS MODERATE OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 6/7 WITH GUSTS VEER SECTOR N BY
23/0900 VIS MODERATE TO POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 6/7 WITH GUSTS VEER SECTOR N WITH
GUSTS BY 23/0900 PROB OF ISOL RAIN VIS MODERATE TO POOR
ISLAS MALVINAS COASTS: SECTOR S 6/7 WITH GUSTS FOG AND MIST IN PATCHES
DISSIPATING PROB OFISOL RAIN VIS MODERATE TO POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR E 3/4 BACK SECTOR N 4 BY
23/0300 VIS GOOD
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS BACK SECTOR W 4/5 WITH GUSTS BY
22/1500 PROB OF ISOL RAIN VIS MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR N 3/4 INCR 6/7 GUST WITH 8
INTENSITY BY 22/2100 PROB OF ISOL RAIN VIS GOOD TO POOR OCNL VERY POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR N 8 WITH GUSTS BACK
SECTOR W WITH GUSTS BY 23/0000 PROB OF SH RAIN VIS VERY POOR
REST OF THE AREA: SECTOR W 8 WITH GUSTS DECR 6/7 WITH GUSTS BY 23/0300 PROB OF
SH RAIN VIS VERY POOR TO POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 4/5 WITH GUSTS VEER SECTOR N 8
WITH GUSTS BY 23/0600 PROB OF SH RAIN VIS GOOD TO VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR N 5/6 WITH GUSTS BACK
SECTOR W 8 WITH GUSTS BY 23/0300 PROB OF SH RAIN VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR N 4/5 WITH GUSTS BACK SECTOR S 8 WITH GUSTS BY 23/0300
PROB OF SH RAIN VIS MODERATE TO VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 4/6 WITH GUSTS BACK SECTOR N 6/7
WITH GUSTS BY 23/0600 PROB OF ISOL RAIN VIS GOOD TO MODERATE OCNL POOR
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