1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 12, MAY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
645/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR S WITH GUST IN 60S-64S 70W-60W UNTIL 12/0900
646/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR W GUST WITH 9 INTENSITY IN 60S-65S 90W-80W FROM 12/0300 UNTIL 12/1500
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 985HPA 62S 3W MOV SE WKN
LOW 975HPA 73S 39W MOV SE WKN
HIGH 990HPA 70S 85W MOV E INTSF
RIDGE 60S 73W 63S 72W 66S 70W MOV E WKN
111400 UTC 1.SEA ICE LIMIT 6614S 02000W 6617S 02518W 6613S 02753W 6521S 03227W 6228S 03509W 6255S 04154W 6302S 04651W 6218S 04928W 6158S 05227W 6213S 05625W 6416S 06313W 6647S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5739S 03552W 16X7NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4908S 02700W 6X3NM ICEBERG2 4624S 02620W 4X2NM 4.ICEBERGS AREA A6800S 02000W 4200S 02000W 4200S 04100W 6100S 04100W B6100S 04100W 5500S 04100W 6200S 06716W 6830S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-05-13
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR S 7/8 WITH GUSTS VEER SW 8/7 WITH GUSTS BY 12/1200 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NE 4/5 VEER SECTOR E 4/5 WITH GUSTS BY 12/1200 PROB OF MIST PROB OF RAIN AND SNOW MIXTURE WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR S 7/8 WITH GUSTS VEER SW 8/7 WITH GUSTS BY 12/1200 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: NE 4/5 VEER SECTOR E 4/5 WITH GUSTS BY 12/1200 PROB OF MIST PROB OF RAIN AND SNOW MIXTURE WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR
GERLACHE STRAIT : SE 3/4 BACK NE 4 BY 12/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
MARGARITA BAY : SECTOR N 3/4 BACK NE 4/5 WITH GUSTS BY 12/1500 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE OCNL POOR
EREBUS Y TERROR GULF : NE 4/5 BACK SW 4/5 BY 12/1500 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 5/7 GUST WITH 8 INTENSITY INCR SECTOR W 9 WITH GUSTS BY 12/0900 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 3/4 VEER SECTOR N 5/7 WITH GUSTS BY 12/0900 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 3/4 BACK NE 4/5 BY 12/0600 PROB OF FOG AND MIST IN PATCHES PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SECTOR E 4/5 VEER SE 4/5 BY 12/0900 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING DURING THE MORNING VIS GOOD TO MODERATE OCNL VERY POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 5/6 WITH GUSTS BACK SW 6/5 BY 12/0600 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR TOWARDS MORNING VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): NW 6/5 WITH GUSTS VEER NE 5/4 WITH GUSTS BY 12/0900 PROB OF MIST PROB OFMOD SNOW FALL IMPR DURING THE EVENING VIS POOR TO MODERATE=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-05-12, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 206: STRONG BARIC GRADIENT ON MOV E WILL PROVOKE WINDS FORCE 9 FROM
SECTOR W WITH GUST BETWEEN 40S-45S 30W-40W FROM 12/2100
WARNING 205: STRONG BARIC GRADIENT ON MOV NE WILL PROVOKE WINDS FORCE 8 FROM
SECTOR W WITH GUST BETWEEN 35S-40S 30W-55W FROM 12/0900
WARNING 202: STRONG BARIC GRADIENT ON MOV NE PROVOKES WINDS FORCE 8 FROM SW WITH
GUST IN GOLFO DE SAN JORGE COASTS SOUTH PATAGONIA COASTS FIN DEL MUNDO COASTS
ISLAS MALVINAS COASTS CENTRAL WEST AREA (40S- 50S AND 40W- 60W) DRAKE AREA (55S-
60S AND 60W- 67W)
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 969HPA 48S 36W MOV S WKN EXP 54S 35W BY 13/0000 EXTENDS OFNT AT 40S 42W 51S
47W 52S 28W 45S 20W
LOW 993HPA 48S 58W MOV NE DPN EXP 45S 40W BY 13/0000 EXTENDS CFNT AT 48S 58W 43S
56W 41S 62W MOV NE
LOW 986HPA 60S 65W MOV NE WKN EXTENDS CFNT AT 60S 60W 55S 59W 52S 62W MOV NE
111400 UTC 1.SEA ICE LIMIT 6614S 02000W 6617S 02518W 6613S 02753W 6521S 03227W
6228S 03509W 6255S 04154W 6302S 04651W 6218S 04928W 6158S 05227W 6213S 05625W
6416S 06313W 6647S 06716W 2.ICEBERGS GREATER THAN 10NM A76C 5739S 03552W 16X7NM
3.ICEBERGS SMALLER THAN 10NM ICEBERG1 4908S 02700W 6X3NM ICEBERG2 4624S 02620W
4X2NM 4.ICEBERGS AREA A6800S 02000W 4200S 02000W 4200S 04100W 6100S 04100W
B6100S 04100W 5500S 04100W 6200S 06716W 6830S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-05-13
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR W 4/5 WITH GUSTS DECR 4/3 BY 12/1500 VEER SECTOR S
BY 12/2100 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR W 5/4 WITH GUSTS VEER SECTOR S 4 BY 12/2100 VIS
GOOD
URUGUAY SOUTH EAST COASTS: SECTOR W 6/5 WITH GUSTS VEER SW 5 WITH GUSTS BY
12/2100 VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR W 6/5 WITH GUSTS BACK SECTOR S 5
WITH GUSTS BY 12/1800 LOW PROB OF ISOL RAIN DURING THE EVENING VIS GOOD OCNL
MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR W 5/4 WITH GUSTS BACK SECTOR S
5 WITH GUSTS BY 12/1200 LOW PROB OF SH STARTING EARLY MORNING VIS MODERATE OCNL
GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SW 5/6 GUST WITH 8 INTENSITY PROB OF
ISOL RAIN INTERMITTENT SH VIS MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SW 8/7 WITH GUSTS PROB OF RAIN
INTERMITTENT SH VIS POOR OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SW 8/7 WITH GUSTS PROB OF RAIN INTERMITTENT
SH VIS POOR OCNL MODERATE.
FIN DEL MUNDO COASTS(54S - 55S): SW 8/6 WITH GUSTS DECR 6/5 BY 12/1500 PROB OF
SH OF SNOW SNOW FALL VIS POOR
ISLAS MALVINAS COASTS: SW 8/6 WITH GUSTS DECR 6/5 BY 12/1500 PROB OF SH OF SNOW
SNOW FALL VIS POOR.
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: W 5/6 WITH GUSTS VEER NW 6/7 GUST
WITH 8 INTENSITY BY 12/2100 PROB OF SH STORMS SPELLS OF GOOD WEATHER VIS
MODERATE OCNL POOR
E OF 45W: SECTOR W 7/8 WITH GUSTS INCR 9 BY 12/2100 PROB OF SH STORMS VIS POOR
OCNL VERY POOR
REST OF THE AREA: SW 7/8 WITH GUSTS PROB OF SH RAIN STARTING EVENING VIS
MODERATE TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR N 6/5 WITH GUSTS INCR
6/7 GUST WITH 8 INTENSITY BY 12/2100 PROB OF SH RAIN VIS MODERATE OCNL POOR
W OF 30 - N OF 45S: SECTOR W 7 GUST WITH 8 INTENSITY INCR 8/9 BY 12/2100 PROB
OF RAIN HVY SH VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR W 6/5 WITH GUSTS PROB OF SH RAIN VIS MODERATE OCNL
POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR W 6 GUST
WITH 8 INTENSITY BACK SW 8 WITH GUSTS BY 12/0900 PROB OF RAIN HVY SH VIS VERY
POOR TO POOR
E OF 50 - S OF 45S: SW 7 GUST WITH 8 INTENSITY INCR 8 BY 12/1500 PROB OF SH
RAIN VIS POOR OCNL VERY POOR
REST OF THE AREA: SW 7/8 WITH GUSTS DECR 6 GUST WITH 8 INTENSITY BY 12/2100
PROB OF SH RAIN NXT SH OF SNOW SNOW FALL VIS POOR OCNL VERY POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) S OF 55S: SECTOR E 6 GUST WITH 8
INTENSITY PROB OF SH RAIN VIS POOR OCNL VERY POOR
E OF 30 - N OF 55S: SECTOR E 6 WITH GUSTS BACK SECTOR N 5 WITH GUSTS BY 12/1200
PROB OF SH RAIN NXT DRIZZLE RAIN VIS POOR TO MODERATE
REST OF THE AREA: SECTOR E 5 VRB 4 BY 12/1500 PROB OF DRIZZLE RAIN VIS MODERATE
OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR S 5/7 GUST WITH 8
INTENSITY PROB OF DRIZZLE RAIN VIS MODERATE TO POOR
W OF 50 - N OF 55S: SECTOR S 5/6 WITH GUSTS PROB OF ISOL SNOW FALL IMPR TOWARDS
THE END OF THE PERIOD VIS POOR TO MODERATE
REST OF THE AREA: NE 4/5 VEER SECTOR S 5 PROB OF ISOL SNOW FALL IMPR STARTING
EVENING VIS MODERATE TO GOOD
DRAKE AREA (55S- 60S AND 60W- 67W): SW 8/7 WITH GUSTS DECR 5 BY 12/1800 PROB OF
SH OF SNOW SNOW FALL SPELLS OF GOOD WEATHER VIS POOR OCNL MODERATE
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