1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-07-23, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 342: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST IN SOUTH WEST AREA (50S- 60S AND 40W- 60W)
PART 2 GENERAL SYNOPSIS AT 09:00UTC
221400 UTC 1.SEA ICE LIMIT 5759S 02000W 5605S 02618W 5803S 03217W 5835S 03758W
5937S 04316W 6142S 04814W 6210S 05247W 6229S 05655W 6338S 06032W 6413S 06336W
6530S 06559W 6602S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6118S 05113W 21X12NM
A81 6036S 05242W 28X25NM A76C 5204S 03142W 16X6NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 6148S 05202W 6X3NM 4.ICEBERGS AREA A5830S 02000W 4550S 02000W 5100S
03300W 5840S 03300W B5840S 03300W 5100S 03300W 5800S 05000W 6200S 05000W C6200S
05000W 5800S 05000W 6300S 06716W 6615S 06716W
HIGH 1026HPA 39S 54W MOV E DPN EXP 38S 43W BY 24/1200 EXTENDS RIDGE AT 38S 54W
46S 58W 49S 62W
LOW 966HPA 58S 30W MOV E EXTENDS CFNT AT 58S 30W 52S 41W 51S 51W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-07-24
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR W 3/4 WITH GUSTS FOG MIST DISSIPATING VIS MODERATE
TO GOOD
OUTER RIO DE LA PLATA: SECTOR W 3/4 WITH GUSTS FOG MIST DISSIPATING VIS MODERATE
TO GOOD
URUGUAY SOUTH EAST COASTS: SECTOR W 3/4 WITH GUSTS FOG MIST DISSIPATING VIS
MODERATE TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 3/4 WITH GUSTS PROB OF ISOL RAIN
VIS GOOD TO MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/5 PROB OF ISOL RAIN VIS
GOOD TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5/6 WITH GUSTS PROB OF ISOL
RAIN VIS MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5/6 WITH GUSTS PROB OF ISOL
RAIN VIS MODERATE OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR E 4/5 INCR 5/6 WITH GUSTS BY 23/2100
PROB OF ISOL RAIN SNOW FALL VIS GOOD TO MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4/5 WITH GUSTS PROB OF ISOL RAIN
SNOW FALL VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR W 4/5 WITH GUSTS PROB OF ISOL RAIN SNOW FALL VIS
MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR S 5/6 WITH GUSTS PROB OF SH
RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR S 4/5 WITH GUSTS BACK SECTOR N WITH GUSTS BY 24/0300
VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR W 6/7 GUST WITH 8 INTENSITY
PROB OF ISOL RAIN VIS POOR OCNL VERY POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR W 6/7 WITH GUSTS VEER SECTOR N
WITH GUSTS BY 24/0900 PROB OF ISOL RAIN VIS GOOD OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): NW 8 WITH GUSTS BACK SECTOR W WITH
GUSTS BY 23/1500 PROB OF ISOL SNOW FALL VIS VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR W 6/7 GUST WITH 8 INTENSITY PROB
OF ISOL SNOW FALL VIS POOR OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/7 WITH GUSTS VIS POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 23, JULY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
997/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 64S-72S 76W-70W UNTIL 23/1500
998/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 60S-64S 70W-60W UNTIL 24/0600
999/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 64S-67S 70W-65W UNTIL 24/1200
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 960HPA 67S 38W MOV E DPN
2OW 985HPA 65S 58W MOV E DPN
3IGH 1026HPA 62S 90W MOV E INTSF EXTENDS RIDGE AT 62S 90W 63S 80W 65S 73W MOV E
421400 UTC 1.SEA ICE LIMIT 5759S 02000W 5605S 02618W 5803S 03217W 5835S 03758W 5937S 04316W 6142S 04814W 6210S 05247W 6229S 05655W 6338S 06032W 6413S 06336W 6530S 06559W 6602S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6118S 05113W 21X12NM A81 6036S 05242W 28X25NM A76C 5204S 03142W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 6148S 05202W 6X3NM 4.ICEBERGS AREA A5830S 02000W 4550S 02000W 5100S 03300W 5840S 03300W B5840S 03300W 5100S 03300W 5800S 05000W 6200S 05000W C6200S 05000W 5800S 05000W 6300S 06716W 6615S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-07-24
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 9 WITH GUSTS DECR SW 5/6 WITH GUSTS BY 24/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS GOOD TO MODERATE OCNL POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 5/6 WITH GUSTS INCR SW 7/8 WITH GUSTS BY 24/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS MODERATE TO POOR
MAR DE LA FLOTA COASTS W OF 60W: SW 9 WITH GUSTS DECR SW 5/6 WITH GUSTS BY 24/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NOON VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 5/6 WITH GUSTS INCR SW 7/8 WITH GUSTS BY 24/0000 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS MODERATE TO POOR
GERLACHE STRAIT : SW 7/8 WITH GUSTS VEER SECTOR W 7 WITH GUSTS BY 23/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
MARGARITA BAY : SW 7/8 WITH GUSTS VEER SECTOR W 7 WITH GUSTS BY 23/2100 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
EREBUS Y TERROR GULF : SW 6/7 WITH GUSTS INCR SW 8 WITH GUSTS BY 23/1800 PROB OF COASTAL BLIZZARD VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 6/7 GUST WITH 8 INTENSITY DECR SW 6/5 WITH GUSTS BY 23/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS MODERATE TO POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 7/8 WITH GUSTS DECR SW 5 WITH GUSTS BY 23/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NOON VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 7/8 WITH GUSTS INCR SECTOR W 9 WITH GUSTS BY 23/1800 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS NIGTH VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 65S: SW 5/6 WITH GUSTS VEER SECTOR W 7/8 WITH GUSTS BY 23/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS NOON VIS GOOD TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 4/5 WITH GUSTS BACK SW 7 WITH GUSTS BY 23/2100 PROB OF FOG AND MIST IN PATCHES WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 5/7 INCR SE 8 WITH GUSTS BY 23/1800 PROB OF MIST PROB OFCOASTAL BLIZZARD IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE=