1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-12-05, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 484: LOW 983HPA AT 53S 28W MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM
SECTOR W WITH GUST BETWEEN 50S-55S AND 20W-30W UNTIL 06/0000
PART 2 GENERAL SYNOPSIS AT 09:00UTC
CFNT AT 47S 62W 53S 57W 58S 60W MOV E
LOW 1000HPA 40S 46W MOV SE DPN EXP 45S 20W BY 06/1200 EXTENDS STATIONARY FRONT
AT 36S 58W 37S 52W 40S 47W
LOW 983HPA 53S 28W MOV SE DPN EXTENDS CFNT AT 43S 38W 45S 29W 51S 20W MOV E
041400 UTC 1.SEA ICE LIMIT 5830S 02000W 5611S 02546W 5736S 02958W 5833S 03142W
5757S 03800W 5736S 04312W 5753S 04820W 5927S 05314W 6038S 05517W 6141S 05718W
6411S 06356W 6637S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5226S 04009W 32X24NM
A74A 5516S 02633W 27X17NM A77 5240S 04248W 27X4NM A76C 5907S 03838W 16X7NM B15AB
5751S 04634W 11X4NM A23G 5331S 03849W 11X3NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 5448S 04006W 9X2NM ICEBERG2 5124S 03440W 3X1NM ICEBERG3 5255S 03906W
7X3NM ICEBERG4 5053S 03708W 6X2NM ICEBERG5 5204S 03847W 3X3NM ICEBERG6 5136S
04102W 2X2NM ICEBERG7 5301S 04030W 3X3NM ICEBERG8 5146S 03617W 2X1NM ICEBERG9
5121S 03818W 4X2NM ICEBERG10 5300S 03703W 3X1NM ICEBERG11 5242S 04011W 4X1NM
ICEBERG12 5159S 04142W 2X1NM ICEBERG13 4935S 03809W 2X1NM ICEBERG14 4928S 03716W
2X1NM ICEBERG15 5159S 04144W 3X1NM ICEBERG16 5346S 04007W 2X1NM ICEBERG17 5133S
04113W 2X1NM ICEBERG18 5154S 04141W 2X2NM ICEBERG19 5057S 02122W 3X1NM ICEBERG20
5215S 04058W 2X1NM ICEBERG21 5549S 04131W 4X1NM ICEBERG22 5015S 03825W 9X6NM
ICEBERG23 5118S 03633W 8X2NM ICEBERG24 5216S 04044W 7X2NM ICEBERG25 5232S 04020W
4X2NM ICEBERG26 5002S 02922W 2X1NM ICEBERG27 5159S 03950W 4X2NM ICEBERG28 5225S
03945W 4X1NM ICEBERG29 5233S 03942W 2X1NM ICEBERG30 5216S 03941W 2X1NM ICEBERG31
5217S 04003W 3X2NM ICEBERG32 5214S 04005W 2X1NM ICEBERG33 5203S 03954W 2X2NM
ICEBERG34 5159S 03955W 2X1NM 4.ICEBERGS AREA A 6000S 02000W 4657S 02000W 4600S
03100W 5900S 03200W B 5900S 03200W 4600S 03100W 4800S 04100W 5900S 04100W C
5900S 04100W 4800S 04100W 6000S 06716W 6600S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-12-6
COASTAL AREAS:
INNER RIO DE LA PLATA: NW 3 VEER SE 4 WITH GUSTS BY 6/0000 PROB OF ISOL STORMS
STARTING NIGTH VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: NW 3 VEER SE 5 WITH GUSTS BY 05/2100 PROB OF STORMS
SPELLS OF GOOD WEATHER VIS MODERATE TO POOR OCNL GOOD
URUGUAY SOUTH EAST COASTS: SECTOR N 4/5 WITH GUSTS PROB OF ISOL STORMS STARTING
EVENING VIS GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR E 3/5 WITH GUSTS PROB OF STORMS
SPELLS OF GOOD WEATHER VIS MODERATE TO POOR OCNL GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR E 3/5 WITH GUSTS DECR BY
6/0300 PROB OF STORMS STARTING EVENING VIS GOOD TO MODERATE OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 5 WITH GUSTS BACK SECTOR W BY
05/1800 VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 5/6 WITH GUSTS VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S) N OF 50S: SECTOR W 4 WITH GUSTS BACK SECTOR
N 5 WITH GUSTS BY 05/1200 PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS GOOD OCNL
MODERATE
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SECTOR W 6/5 WITH GUSTS
PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 7/6 WITH GUSTS PROB OF ISOL RAIN VIS
MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR W 6 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR S 6 WITH GUSTS VEER SECTOR W
BY 05/1500 PROB OF RAIN VIS MODERATE OCNL POOR
W OF 40 - E OF 50W: SECTOR W 7 WITH GUSTS BACK SECTOR S 4 WITH GUSTS BY 05/2100
PROB OF ISOL STORMS SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 6 WITH GUSTS BACK SECTOR E 5 WITH GUSTS BY 05/1500
PROB OF STORMS SPELLS OF GOOD WEATHER VIS MODERATE TO POOR OCNL GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR W 6 WITH GUSTS BACK
SECTOR S BY 05/2100 PROB OF RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR S 5/6 WITH GUSTS PROB OF RAIN VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) S OF 45S: SECTOR W 5 WITH GUSTS PROB
OF ISOL RAIN DURING THE EVENING IMPR VIS MODERATE TO GOOD
REST OF THE AREA: SECTOR W 5 WITH GUSTS BACK SECTOR S 4 BY 05/1500 PROB OF ISOL
RAIN TOWARDS NIGTH IMPR VIS MODERATE TO GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30 - N OF 55S: SECTOR W 8/6 WITH
GUSTS BACK SECTOR S 5 WITH GUSTS BY 6/0300 PROB OF RAIN AND SNOW MIXTURE VIS
VERY POOR TO MODERATE
W OF 30 - N OF 55S: SECTOR W 6/5 WITH GUSTS BACK SECTOR S BY 05/1800 PROB OF
RAIN AND SNOW MIXTURE SNOW FALL VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR S 5/4 WITH GUSTS PROB OF RAIN AND SNOW MIXTURE SNOW
FALL VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR N 5/6 WITH GUSTS BACK
SECTOR W BY 6/0600 PROB OF ISOL RAIN RAIN AND SNOW MIXTURE VIS MODERATE
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS PROB OF ISOL RAIN RAIN AND SNOW
MIXTURE VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 7/6 WITH GUSTS PROB OF ISOL RAIN
VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 05, DECEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1419/2025 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR E IN 62S-64S 60W-70W FROM 05/1800 UNTIL 06/0600
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1007HPA 70S 40W MOV E WKN
LOW 977HPA 60S 60W MOV E WKN
LOW 986HPA 60S 60W MOV E WKN
041400 UTC 1.SEA ICE LIMIT 5830S 02000W 5611S 02546W 5736S 02958W 5833S 03142W 5757S 03800W 5736S 04312W 5753S 04820W 5927S 05314W 6038S 05517W 6141S 05718W 6411S 06356W 6637S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5226S 04009W 32X24NM A74A 5516S 02633W 27X17NM A77 5240S 04248W 27X4NM A76C 5907S 03838W 16X7NM B15AB 5751S 04634W 11X4NM A23G 5331S 03849W 11X3NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5448S 04006W 9X2NM ICEBERG2 5124S 03440W 3X1NM ICEBERG3 5255S 03906W 7X3NM ICEBERG4 5053S 03708W 6X2NM ICEBERG5 5204S 03847W 3X3NM ICEBERG6 5136S 04102W 2X2NM ICEBERG7 5301S 04030W 3X3NM ICEBERG8 5146S 03617W 2X1NM ICEBERG9 5121S 03818W 4X2NM ICEBERG10 5300S 03703W 3X1NM ICEBERG11 5242S 04011W 4X1NM ICEBERG12 5159S 04142W 2X1NM ICEBERG13 4935S 03809W 2X1NM ICEBERG14 4928S 03716W 2X1NM ICEBERG15 5159S 04144W 3X1NM ICEBERG16 5346S 04007W 2X1NM ICEBERG17 5133S 04113W 2X1NM ICEBERG18 5154S 04141W 2X2NM ICEBERG19 5057S 02122W 3X1NM ICEBERG20 5215S 04058W 2X1NM ICEBERG21 5549S 04131W 4X1NM ICEBERG22 5015S 03825W 9X6NM ICEBERG23 5118S 03633W 8X2NM ICEBERG24 5216S 04044W 7X2NM ICEBERG25 5232S 04020W 4X2NM ICEBERG26 5002S 02922W 2X1NM ICEBERG27 5159S 03950W 4X2NM ICEBERG28 5225S 03945W 4X1NM ICEBERG29 5233S 03942W 2X1NM ICEBERG30 5216S 03941W 2X1NM ICEBERG31 5217S 04003W 3X2NM ICEBERG32 5214S 04005W 2X1NM ICEBERG33 5203S 03954W 2X2NM ICEBERG34 5159S 03955W 2X1NM 4.ICEBERGS AREA A 6000S 02000W 4657S 02000W 4600S 03100W 5900S 03200W B 5900S 03200W 4600S 03100W 4800S 04100W 5900S 04100W C 5900S 04100W 4800S 04100W 6000S 06716W 6600S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-12-6
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NE 3/5 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR E 3/4 INCR 8 BY 05/1800 DECR 4 BY 6/0600 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: NE 3/5 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : NE 3/4 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
MARGARITA BAY : NE 3/4 VIS GOOD
EREBUS Y TERROR GULF : SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SW 3/5 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 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): NE 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): NE 3/4 PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR=