1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-10-08, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 413: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 FROM SECTOR
N WITH GUST BETWEEN 50S-60S 20W-40W FROM 09/0000
WARNING 412: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 FROM SECTOR
W WITH GUST BETWEEN 50S-55S 40W-60W FROM 08/2100
WARNING 411: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 WITH GUST
BETWEEN 40S-50S AND 30W-60W
WARNING 410: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST IN GOLFO DE SAN JORGE COASTS SOUTH PATAGONIA COASTS FIN DEL MUNDO
COASTS ISLAS MALVINAS COASTS DRAKE AREA (55S- 60S AND 60W- 67W) UNTIL 09/0300
WARNING 408: LOW 994HPA AT 44S 27W MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM
SECTOR W WITH GUST BETWEEN 40S-45S AND 20W-30W UNTIL 08/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
071400 UTC 1.SEA ICE LIMIT 5611S 02000W 5601S 02815W 5823S 03747W 6054S 05207W
6112S 05448W 6202S 05751W 6223S 06036W 6230S 05844W 6329S 06027W 6407S 06334W
6516S 06529W 6542S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5324S 03727W 32X24NM
A74A 5547S 03449W 27X17NM A77 5721S 04634W 27X4NM A76C 6009S 04418W 16X7NM B15AB
5751S 04826W 11X4NM A23G 5238S 03857W 20X8NM A23H 5228S 04138W 10X2NM A23I 5332S
03937W 19X8NM ICEBERG1 4938S 03913W 12X2NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG2
5203S 04048W 3X1NM ICEBERG3 5629S 04333W 9X2NM ICEBERG4 5225S 02604W 3X1NM
ICEBERG5 4939S 02232W 2X1NM ICEBERG6 5703S 04816W 2X1NM ICEBERG7 5122S 02858W
2X1NM ICEBERG8 5240S 03724W 3X1NM ICEBERG9 5151S 04119W 9X4NM ICEBERG10 5123S
03643W 3X1NM ICEBERG11 5246S 04231W 7X3NM ICEBERG12 5056S 02829W 3X1NM ICEBERG13
5117S 02652W 6X3NM ICEBERG14 5221S 03659W 2X1NM ICEBERG15 5340S 03908W 2X2NM
ICEBERG16 5344S 04105W 3X1NM ICEBERG17 5708S 04648W 3X1NM ICEBERG18 5251S 03642W
3X1NM ICEBERG19 5222S 03813W 3X1NM ICEBERG20 5117S 02645W 3X1NM ICEBERG21 5044S
03141W 6X4NM ICEBERG22 5207S 03500W 3X1NM 4.ICEBERGS AREA A: 5658S 02000W 4400S
02000W 4340S 03000W 5830S 03410W B: 5830S 03410W 4800S 03045W 4900S 04020W 6100S
04550W C: 6100S 04550W 5200S 04135W 5924S 05410W 6147S 05200W D: 6147S 05200W
6000S 05435W 6347S 06716W 6651S 06716W
CFNT AT 47S 53W 53S 56W 58S 55W MOV E
STRONG BARIC GRADIENT GOLFO DE SAN JORGE COASTS SOUTH PATAGONIA COASTS MOV E
LOW 1018HPA 38S 51W MOV E WKN
RIDGE 40S 46W 48S 39W 57S 24W MOV E
LOW 994HPA 44S 27W MOV E WKN
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-10-9
COASTAL AREAS:
INNER RIO DE LA PLATA: NW 3/4 VIS GOOD
OUTER RIO DE LA PLATA: NW 3/5 WITH GUSTS VIS GOOD
URUGUAY SOUTH EAST COASTS: SECTOR W 3 VEER SECTOR N 4 BY 08/2100 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): NW 3/6 WITH GUSTS VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): NW 5/7 GUST WITH 8 INTENSITY DECR BY
9/1200 VIS GOOD TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 6/4 WITH GUSTS PROB OF ISOL
RAIN VIS GOOD TO MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 8/5 WITH GUSTS PROB OF ISOL
RAIN VIS VERY POOR TO MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 8/5 WITH GUSTS PROB OF RAIN IMPR
TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 7/8 WITH GUSTS DECR BY 9/0300 PROB
OF RAIN SPELLS OF GOOD WEATHER VIS MODERATE TO VERY POOR
ISLAS MALVINAS COASTS: SECTOR W 5/8 WITH GUSTS DECR BY 9/0300 PROB OF RAIN
SPELLS OF GOOD WEATHER VIS MODERATE TO VERY POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR W 7 WITH GUSTS BACK SECTOR S
4 BY 9/0000 PROB OF RAIN IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO
MODERATE
W OF 40W - E OF 50W: SECTOR W 4/6 WITH GUSTS PROB OF ISOL RAIN IMPR TOWARDS
NIGTH VIS MODERATE TO GOOD
REST OF THE AREA: NW 4/7 GUST WITH 8 INTENSITY VIS GOOD TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) W OF 30W: SECTOR S 5 WITH GUSTS VEER
NW 8 WITH GUSTS BY 08/1500 PROB OF ISOL RAIN TOWARDS THE END OF THE PERIOD VIS
GOOD TO VERY POOR
REST OF THE AREA: SECTOR S 7/5 WITH GUSTS VEER NW 6 WITH GUSTS BY 9/0300 PROB
OF RAIN AND SNOW MIXTURE IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO
MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): NW 8 WITH GUSTS PROB OF ISOL RAIN
DURING THE EVENING VIS VERY POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR N 6/8 WITH GUSTS PROB OF RAIN
AND SNOW MIXTURE SNOW FALL VIS VERY POOR TO POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR W 6/8 WITH GUSTS PROB
OF RAIN IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR
REST OF THE AREA: SECTOR W 6/7 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE SNOW
FALL VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 8/7 WITH GUSTS PROB OF RAIN SNOW
FALL VIS VERY POOR TO POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 08, OCTOBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1162/2025 STRONG BARIC GRADIENT GERLACHE STRAIT MOV E DEEPENING PROVOKES WINDS FORCE 9 FROM SECTOR E IN 63S-66S 60W-70W
1163/2025 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR E IN 61S-63S 58W-70W
1164/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR W IN 60S-64S 80W-90W
1165/2025 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MARGARITA BAY MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR E IN 65S-70S 65W-80W
1166/2025 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR S BY 08/1800 IN 63S-66S 50W-60W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 954HPA 62S 75W MOV E WKN EXTENDS CFNT AT 62S 75W 62S 65W 60S 55W
LOW 974HPA 65S 50W MOV E DPN
LOW 955HPA 70S 85W MOV E WKN
071400 UTC 1.SEA ICE LIMIT 5611S 02000W 5601S 02815W 5823S 03747W 6054S 05207W 6112S 05448W 6202S 05751W 6223S 06036W 6230S 05844W 6329S 06027W 6407S 06334W 6516S 06529W 6542S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5324S 03727W 32X24NM A74A 5547S 03449W 27X17NM A77 5721S 04634W 27X4NM A76C 6009S 04418W 16X7NM B15AB 5751S 04826W 11X4NM A23G 5238S 03857W 20X8NM A23H 5228S 04138W 10X2NM A23I 5332S 03937W 19X8NM ICEBERG1 4938S 03913W 12X2NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG2 5203S 04048W 3X1NM ICEBERG3 5629S 04333W 9X2NM ICEBERG4 5225S 02604W 3X1NM ICEBERG5 4939S 02232W 2X1NM ICEBERG6 5703S 04816W 2X1NM ICEBERG7 5122S 02858W 2X1NM ICEBERG8 5240S 03724W 3X1NM ICEBERG9 5151S 04119W 9X4NM ICEBERG10 5123S 03643W 3X1NM ICEBERG11 5246S 04231W 7X3NM ICEBERG12 5056S 02829W 3X1NM ICEBERG13 5117S 02652W 6X3NM ICEBERG14 5221S 03659W 2X1NM ICEBERG15 5340S 03908W 2X2NM ICEBERG16 5344S 04105W 3X1NM ICEBERG17 5708S 04648W 3X1NM ICEBERG18 5251S 03642W 3X1NM ICEBERG19 5222S 03813W 3X1NM ICEBERG20 5117S 02645W 3X1NM ICEBERG21 5044S 03141W 6X4NM ICEBERG22 5207S 03500W 3X1NM 4.ICEBERGS AREA A: 5658S 02000W 4400S 02000W 4340S 03000W 5830S 03410W B: 5830S 03410W 4800S 03045W 4900S 04020W 6100S 04550W C: 6100S 04550W 5200S 04135W 5924S 05410W 6147S 05200W D: 6147S 05200W 6000S 05435W 6347S 06716W 6651S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-10-9
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR N 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS VERY POOR TO POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR N 4/5 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS VERY POOR TO POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR E 8 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS VERY POOR TO POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR E 8 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS VERY POOR TO POOR
GERLACHE STRAIT : NE 8 PROB OF MIST FOG PATCHES PROB OF SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
MARGARITA BAY : NE 8 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO POOR OCNL VERY POOR
EREBUS Y TERROR GULF : SECTOR S 3/4 INCR 8 BY 08/1800 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR W 8 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 8 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): SECTOR N 4/5 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR E 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR=