1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 04, NOVEMBER 2025.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 441: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 45S-50S AND 20W-40W
WARNING 442: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SW WITH GUST
BETWEEN 50S-60S AND 45W-60W UNTIL 05/0200
WARNING 443: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SW WITH GUST
BETWEEN 45S-50S 40W-50W FROM 05/0000
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 969HPA 58S 48W MOV E WKN EXP 58S 39W BY 05/1200 EXTENDS CFNT AT 58S 50W 60S
15W 44S 34W 42S 49W MOV E
HIGH 1016HPA 37S 42W MOV E WKN
031400 UTC 1.SEA ICE LIMIT 5735S 02000W 5724S 02309W 5620S 02529W 5647S 02648W
5722S 02714W 5825S 03213W 5857S 03800W 5955S 04241W 6033S 04702W 6141S 05332W
6313S 06000W 6600S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5240S 04018W 32X24NM
A74A 5325S 03103W 27X17NM A77 5606S 04118W 27X4NM A76C 6035S 04137W 16X7NM B15AB
5858S 04714W 11X4NM A23G 5151S 03850W 11X3NM A23I 4949S 03939W 19X8NM 3.ICEBERGS
SMALLER THAN 10NM A23J 5201S 03858W 8X2NM ICEBERG1 4946S 03518W 7X1NM ICEBERG2
5124S 03758W 3X1NM ICEBERG3 5459S 04404W 9X2NM ICEBERG4 5306S 03638W 3X1NM
ICEBERG5 5102S 03759W 3X2NM ICEBERG6 5039S 03336W 3X1NM ICEBERG7 5227S 03919W
7X3NM ICEBERG8 5332S 03838W 2X1NM ICEBERG9 5225S 04059W 2X2NM ICEBERG10 5208S
03724W 3X1NM ICEBERG11 5115S 02641W 4X2NM ICEBERG12 5242S 03644W 2X1NM ICEBERG13
4941S 03752W 4X1NM ICEBERG14 5148S 03820W 3X1NM ICEBERG15 6058S 04535W 3X2NM
ICEBERG16 5219S 03414W 2X1NM ICEBERG17 5059S 03919W 6X2NM ICEBERG18 5152S 03857W
3X3NM ICEBERG19 5217S 03820W 7X6NM ICEBERG20 5207S 03858W 3X3NM ICEBERG21 5204S
03847W 2X1NM ICEBERG22 5128S 03945W 4X2NM ICEBERG23 5059S 02709W 3X1NM ICEBERG24
5217S 03832W 3X1NM ICEBERG25 5155S 03840W 3X1NM ICEBERG26 5251S 04009W 6X1NM
ICEBERG27 5301S 03953W 2X1NM 4.ICEBERGS AREA A 5850S 02000W 4300S 02000W 4600S
03550W 5900S 03700W B 5900S 03700W 4800S 03600W 4840S 05000W 6125S 04900W C
6125S 04900W 5830S 04900W 6200S 06716W 6620S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-11-5
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 3 VEER SECTOR S 5/4 BY 04/1500 DRIZZLE STORMS
STARTING NOON VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: SECTOR N 3 VEER SECTOR S 5/4 BY 04/1500 DRIZZLE STORMS
STARTING NOON VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR N 3 VEER SECTOR S 5/4 BY 04/1500 RAIN STORMS
STARTING EVENING VIS GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 5/4 RAIN STORMS STARTING NIGTH
VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 5/4 RAIN STORMS NEXT IMPR
STARTING EVENING VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 5/4 VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 5/4 VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SW 6 WITH GUSTS PROB OF ISOL RAIN VIS
GOOD
FIN DEL MUNDO COASTS(54S - 55S): SW 6 WITH GUSTS PROB OF ISOL RAIN VIS GOOD.
ISLAS MALVINAS COASTS: SW 6 WITH GUSTS PROB OF ISOL RAIN VIS GOOD.
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: NW 4 BACK PROB OF SH RAIN STARTING
EARLY MORNING VIS GOOD TO MODERATE
NORTH AREA (35S- 40S AND 20W- 55W) REST OF THE AREA: NW 4 BACK PROB OF SH RAIN
STARTING EVENING VIS GOOD TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR W 7 GUST WITH 8
INTENSITY PROB OF RAIN VIS MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) REST OF THE AREA: SECTOR W 8 WITH
GUSTS PROB OF RAIN AND SNOW MIXTURE VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - S OF 45S: SW 6 WITH GUSTS
INCR 8 WITH GUSTS BY 5/0700 PROB OF RAIN AND SNOW MIXTURE VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) REST OF THE AREA: SW 6 GUST WITH 8
INTENSITY PROB OF PRECIPITATIONS VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR W 7 WITH GUSTS PROB OF
ISOL PRECIPITATIONS VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) REST OF THE AREA: SECTOR W 4 PROB OF
ISOL PRECIPITATIONS VIS MODERATE OCNL GOOD
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 45W: SECTOR W 6 WITH GUSTS BACK
SECTOR S BY 5/0700 PROB OF ISOL PRECIPITATIONS VIS MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) REST OF THE AREA: SW 8 WITH GUSTS DECR 6
WITH GUSTS BY 5/0000 PROB OF ISOL PRECIPITATIONS VIS POOR OCNL MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SW 6 WITH GUSTS PROB OF ISOL PRECIPITATIONS
VIS MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 04, NOVEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1293/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR W IN 60S-70S 80W-90W UNTIL 05/0300
1294/2025 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MOV NE WEAKENING PROVOKES WINDS FORCE 8 FROM SW IN 63S-66S 50W-60W UNTIL 04/1500
1295/2025 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV N WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR W IN 60S-64S 50W-70W UNTIL 04/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 960HPA 70S 90W MOV E DPN EXTENDS CFNT AT 70S 90W 65S 80W 60S 80W
LOW 975HPA 65S 30W MOV W WKN
RIDGE 60S 80W 65S 70W 70S 70W MOV E WKN
031400 UTC 1.SEA ICE LIMIT 5735S 02000W 5724S 02309W 5620S 02529W 5647S 02648W 5722S 02714W 5825S 03213W 5857S 03800W 5955S 04241W 6033S 04702W 6141S 05332W 6313S 06000W 6600S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5240S 04018W 32X24NM A74A 5325S 03103W 27X17NM A77 5606S 04118W 27X4NM A76C 6035S 04137W 16X7NM B15AB 5858S 04714W 11X4NM A23G 5151S 03850W 11X3NM A23I 4949S 03939W 19X8NM 3.ICEBERGS SMALLER THAN 10NM A23J 5201S 03858W 8X2NM ICEBERG1 4946S 03518W 7X1NM ICEBERG2 5124S 03758W 3X1NM ICEBERG3 5459S 04404W 9X2NM ICEBERG4 5306S 03638W 3X1NM ICEBERG5 5102S 03759W 3X2NM ICEBERG6 5039S 03336W 3X1NM ICEBERG7 5227S 03919W 7X3NM ICEBERG8 5332S 03838W 2X1NM ICEBERG9 5225S 04059W 2X2NM ICEBERG10 5208S 03724W 3X1NM ICEBERG11 5115S 02641W 4X2NM ICEBERG12 5242S 03644W 2X1NM ICEBERG13 4941S 03752W 4X1NM ICEBERG14 5148S 03820W 3X1NM ICEBERG15 6058S 04535W 3X2NM ICEBERG16 5219S 03414W 2X1NM ICEBERG17 5059S 03919W 6X2NM ICEBERG18 5152S 03857W 3X3NM ICEBERG19 5217S 03820W 7X6NM ICEBERG20 5207S 03858W 3X3NM ICEBERG21 5204S 03847W 2X1NM ICEBERG22 5128S 03945W 4X2NM ICEBERG23 5059S 02709W 3X1NM ICEBERG24 5217S 03832W 3X1NM ICEBERG25 5155S 03840W 3X1NM ICEBERG26 5251S 04009W 6X1NM ICEBERG27 5301S 03953W 2X1NM 4.ICEBERGS AREA A 5850S 02000W 4300S 02000W 4600S 03550W 5900S 03700W B 5900S 03700W 4800S 03600W 4840S 05000W 6125S 04900W C 6125S 04900W 5830S 04900W 6200S 06716W 6620S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-11-5
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 4/5 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR S 8 GUST WITH 9 INTENSITY DECR 5 BY 04/1500 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: SW 4/5 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 8 GUST WITH 9 INTENSITY DECR 5 BY 04/1500 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : SECTOR S 3/4 PROB OF ISOL SNOW FALL PROB OF MIST WORSENING TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE OCNL POOR
MARGARITA BAY : NE 3/4 PROB OF FOG PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR
EREBUS Y TERROR GULF : SW 6/7 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR OCNL MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR W 8 DECR 5 BY 5/0300 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 8 DECR 5 BY 5/0300 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): SECTOR S 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 3/4 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR=