1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-07-23, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 341: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST BETWEEN 35S-40S AND 20W-35W UNTIL 23/0900
WARNING 340: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W)
WARNING 338: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST BETWEEN 55S-60S AND 40W-60W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1023HPA 39S 58W MOV E INTSF
LOW 1008HPA 39S 30W MOV SE WKN EXTENDS STATIONARY FRONT AT 39S 30W 35S 38W 33S
43W
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
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-07-24
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3 PROB OF MIST VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR E 3/4 PROB OF FOG VIS MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: SECTOR E 3/4 PROB OF FOG VIS MODERATE TO GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 3/4 PROB OF FOG VIS MODERATE TO
GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4/5 WITH GUSTS PROB OF RAIN
STARTING NIGTH VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5 WITH GUSTS INCR 6 GUST WITH
8 INTENSITY BY 23/2100 PROB OF MIST PROB OF RAIN STARTING EVENING VIS MODERATE
OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 4/5 WITH GUSTS INCR 6 WITH
GUSTS BY 23/2100 PROB OF RAIN STARTING EARLY MORNING VIS MODERATE OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 4 VEER SECTOR E 4/5 WITH GUSTS BY
23/1800 PROB OF RAIN STARTING EVENING VIS GOOD TO MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4/5 WITH GUSTS PROB OF RAIN AND SNOW
MIXTURE IMPR STARTING EARLY MORNING VIS POOR TO GOOD
ISLAS MALVINAS COASTS: SECTOR W 4/5 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE
IMPR STARTING EARLY MORNING VIS POOR TO GOOD.
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR N 8 BACK SECTOR S 6 WITH
GUSTS PROB OF RAIN VIS POOR
W OF 45W: SECTOR S 5 BACK SECTOR E 4 BY 23/1500 VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR S 6/5 PROB OF RAIN VIS POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR W 6/7 WITH GUSTS PROB OF RAIN
AND SNOW MIXTURE VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR W 6/7 WITH GUSTS PROB
OF RAIN AND SNOW MIXTURE VIS POOR OCNL VERY POOR
REST OF THE AREA: SECTOR W 6/7 WITH GUSTS VEER SECTOR N 6 WITH GUSTS BY 23/2100
PROB OF RAIN VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 8 WITH GUSTS PROB OF RAIN AND
SNOW MIXTURE VIS POOR OCNL VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR W 8 WITH GUSTS DECR 7
WITH GUSTS BY 23/0900 PROB OF RAIN AND SNOW MIXTURE VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR S 7 GUST WITH 8 INTENSITY VEER SECTOR W BY 23/0900
PROB OF RAIN AND SNOW MIXTURE VIS POOR TO MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SW 6 WITH GUSTS VIS MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 23, JULY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
994/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 64S-72S 80W-70W UNTIL 23/1500
995/2026 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
996/2026 STRONG BARIC GRADIENT GERLACHE STRAIT MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 64S-75S 70W-65W UNTIL 24/1200
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 974HPA 68S 59W MOV E DPN
RIDGE 65S 90W 62S 80W 60S 75W MOV NE INTSF
RIDGE 60S 55W 64S 45W 67S 40W MOV NE INTSF
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
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-07-24
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 8 WITH GUSTS INCR SW 9 WITH GUSTS BY 23/0600 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE MORNING VIS GOOD TO MODERATE OCNL POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 5/6 WITH GUSTS INCR SW 8 WITH GUSTS BY 23/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS W OF 60W: SW 8 WITH GUSTS INCR SW 9 WITH GUSTS BY 23/0600 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE MORNING VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 5/6 WITH GUSTS INCR SW 7/8 WITH GUSTS BY 23/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : SW 5/7 GUST WITH 8 INTENSITY INCR SW 8 WITH GUSTS BY 23/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
MARGARITA BAY : NE 3/4 BACK SECTOR N 4/3 BY 23/1800 PROB OF MIST VIS GOOD TO MODERATE
EREBUS Y TERROR GULF : SW 5/7 WITH GUSTS INCR SW 8 WITH GUSTS BY 23/0900 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 23/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 7/8 WITH GUSTS DECR SW 5 WITH GUSTS BY 23/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE MORNING VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 7/8 WITH GUSTS INCR SECTOR W 9 WITH GUSTS BY 23/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 65S: SW 5/6 WITH GUSTS VEER SECTOR W 7/8 WITH GUSTS BY 23/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING TOWARDS MORNING VIS GOOD TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 4/5 WITH GUSTS BACK SW 7 WITH GUSTS BY 23/1200 PROB OF FOG AND MIST IN PATCHES WORSENING TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 5/7 INCR SE 8 WITH GUSTS BY 23/1200 PROB OF MIST PROB OFCOASTAL BLIZZARD IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE=