1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 25, JULY 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1008/2026 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 62S-64S 62W-50W UNTIL 25/2100
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 977HPA 70S 60W MOV E WKN
RIDGE 60S 50W 65S 48W 68S 47W MOV E WKN
RIDGE 61S 90W 62S 80W 61S 72W MOV E WKN
241400 UTC 1.SEA ICE LIMIT 5800S 02000W 5607S 02618W 5752S 03217W 5807S 03758W 5824S 04317W 5925S 04813W 6125S 05247W 6219S 05654W 6313S 06033W 6407S 06337W 6522S 06558W 6444S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6115S 05112W 21X12NM A81 6029S 05249W 28X25NM A76C 5217S 03116W 16X6NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 6141S 05154W 6X3NM 4.ICEBERGS AREA A5900S 02000W 4500S 02000W 4400S 03000W 6000S 04000W B5700S 03800W 6000S 04000W 5600S 05000W 6200S 05000W C6200S 05000W 5800S 05000W 6230S 06716W 6630S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-07-26
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 4/5 VEER SECTOR W 5/6 WITH GUSTS BY 25/1500 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 5/6 WITH GUSTS VEER SECTOR W 7/8 WITH GUSTS BY 25/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE MORNING VIS GOOD TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 4/5 WITH GUSTS VEER SECTOR W 5/6 WITH GUSTS BY 25/1500 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA : SW 8 WITH GUSTS VEER SECTOR W 6/5 WITH GUSTS BY 25/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE OCNL GOOD
GERLACHE STRAIT : SW 4/5 WITH GUSTS BACK SECTOR S 4/3 BY 25/1500 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS POOR TO MODERATE OCNL GOOD
MARGARITA BAY : NW 4/5 WITH GUSTS VEER NE 4/3 BY 25/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : NW 3/4 BACK SW 5/7 GUST WITH 8 INTENSITY BY 25/1200 VIS GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 4/5 WITH GUSTS VEER SECTOR W 5/4 WITH GUSTS BY 25/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 5/7 GUST WITH 8 INTENSITY DECR SW 5/4 WITH GUSTS BY 25/1500 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING EVENING VIS POOR TO MODERATE OCNL GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 7/8 WITH GUSTS DECR SW 6/5 BY 25/1500 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR DURING THE MORNING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA N OF 65S: SW 7/5 WITH GUSTS VEER NW 7 WITH GUSTS BY 25/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SW 4/5 WITH GUSTS BACK NW 4/3 WITH GUSTS BY 25/1200 PROB OF MIST VIS GOOD TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 5/4 BACK NE 4/5 WITH GUSTS BY 25/1200 VIS GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 25, JULY 2026.
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 BETWEEN 50S-60S AND 20W-40W UNTIL 25/1200
WARNING 343: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 WITH GUST BETWEEN
45S-51S 30W-45W FROM 25/2100
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1029HPA 39S 38W MOV E EXTENDS RIDGE AT 45S 45W 52S 55W MOV E
LOW 999HPA 50S 65W NC EXP 50S 50W BY 25/2100
LOW 1002HPA 50S 60W INTSF EXP 53S 45W BY 25/2100
241400 UTC 1.SEA ICE LIMIT 5800S 02000W 5607S 02618W 5752S 03217W 5807S 03758W
5824S 04317W 5925S 04813W 6125S 05247W 6219S 05654W 6313S 06033W 6407S 06337W
6522S 06558W 6444S 06716W 2.ICEBERGS GREATER THAN 10NM D33B 6115S 05112W 21X12NM
A81 6029S 05249W 28X25NM A76C 5217S 03116W 16X6NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 6141S 05154W 6X3NM 4.ICEBERGS AREA A5900S 02000W 4500S 02000W 4400S
03000W 6000S 04000W B5700S 03800W 6000S 04000W 5600S 05000W 6200S 05000W C6200S
05000W 5800S 05000W 6230S 06716W 6630S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-07-26
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 3/4 MIST STARTING EARLY MORNING UNSTABLE
STARTING EVENING VIS MODERATE
OUTER RIO DE LA PLATA: SECTOR N 3/4 MIST DURING THE MORNING UNSTABLE STARTING
EVENING VIS MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR N 3/4 MIST STARTING EARLY MORNING UNSTABLE VIS
MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): NW 5/4 VEER N 5 BY 25/1500 PROB OF ISOL
RAIN DURING THE MORNING IMPR MIST VIS MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): NW 4/5 WITH GUSTS PROB OF ISOL RAIN
VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): NW 4/5 WITH GUSTS BACK W 4 BY 25/2100
PROB OF ISOL RAIN VIS MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 4/5 WITH GUSTS PROB OF ISOL
RAIN VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR E 4/5 VEER SECTOR S 5/7 WITH GUSTS
BY 25/1500 PROB OF RAIN VIS MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR E 4 VEER SE 5 WITH GUSTS BY 25/1200
VEER S 6 WITH GUSTS BY 25/2100 PROB OF ISOL RAIN VIS MODERATE
ISLAS MALVINAS COASTS: SECTOR E 5 WITH GUSTS VEER SE 6/7 WITH GUSTS BY 25/1800
PROB OF RAIN VIS MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR S 5/4 VEER VRB 4 BY 25/0900
SECTOR N 4 BY 25/1800 UNSTABLE TOWARDS NIGTH VIS GOOD OCNL MODERATE
NORTH AREA (35S- 40S AND 20W- 55W) REST OF THE AREA: SECTOR N 6/5 WITH GUSTS
PROB OF RAIN ISOL STORMS VIS MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR W 6/5 WITH GUSTS PROB
OF ISOL DRIZZLE RAIN VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) REST OF THE AREA: SECTOR W 6/5 WITH
GUSTS VEER SECTOR N 7 GUST WITH 8 INTENSITY BY 25/1500 PROB OF RAIN VIS MODERATE
TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) W OF 50W: SECTOR N 5/7 WITH GUSTS INCR
7 GUST WITH 8 INTENSITY BY 25/1200 VEER NW 6/7 WITH GUSTS BY 25/1800 PROB OF
RAIN VIS MODERATE TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) REST OF THE AREA: NW 6/5 WITH GUSTS
PROB OF RAIN VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR W 8/7 WITH GUSTS DECR
7/6 BY 25/1500 PROB OF RAIN AND SNOW MIXTURE VIS POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) REST OF THE AREA: SECTOR W 8/7 WITH
GUSTS DECR 6/5 WITH GUSTS BY 25/1200 PROB OF ISOL RAIN AND SNOW MIXTURE RAIN
STARTING EVENING VIS POOR TO MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR W 7/5 WITH
GUSTS BACK SECTOR E 4 BY 25/0900 VEER VRB 5 BY 25/1800 PROB OF RAIN VIS
MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55S: SECTOR W 5 WITH GUSTS PROB OF
ISOL SNOW FALL VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) REST OF THE AREA: SECTOR E 5/4 VEER
SECTOR S 6 WITH GUSTS BY 25/1800 PROB OF RAIN VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 4/5 UNSTABLE VIS MODERATE
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