1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-12-7, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 485: STRONG BARIC GRADIENT ON PROVOKES WINDS FORCE 8 FROM SW WITH GUST
BETWEEN 40S-50S 35W-45W FROM 07/2100
PART 2 GENERAL SYNOPSIS AT 21:00UTC
061400 UTC 1.SEA ICE LIMIT 6042S 02003W 5723S 02422W 6034S 02603W 5617S 02654W
5729S 03530W 5807S 04328W 5801S 04828W 5933S 05300W 6052S 05542W 6337S 06106W
6526S 06551W 6717S 06922W 2.ICEBERGS GREATER THAN 10NM A23A 5229S 04001W 32X24NM
A74A 5529S 02628W 27X13NM A77 5223S 04302W 27X4NM A76C 5907S 03831W 16X7NM B15AB
5730S 04629W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5356S 04047W 9X2NM
ICEBERG2 5254S 03905W 7X3NM ICEBERG3 5252S 04050W 3X3NM ICEBERG4 5146S 03617W
2X1NM ICEBERG5 5120S 03808W 4X2NM ICEBERG6 5254S 03656W 3X1NM ICEBERG7 5246S
04004W 4X1NM ICEBERG8 4930S 03657W 2X1NM ICEBERG9 5346S 04007W 2X1NM ICEBERG10
5126S 04102W 2X1NM ICEBERG11 5038S 02124W 3X1NM ICEBERG12 5218S 04103W 2X1NM
ICEBERG13 5404S 04147W 4X1NM ICEBERG14 5022S 03835W 9X6NM ICEBERG15 5118S 03633W
8X2NM ICEBERG16 5218S 04057W 7X2NM ICEBERG17 5245S 03953W 4X2NM ICEBERG18 4940S
02913W 2X1NM ICEBERG19 5159S 03954W 4X2NM ICEBERG20 5217S 03948W 4X1NM ICEBERG21
5218S 03954W 2X1NM ICEBERG22 5209S 03935W 2X1NM ICEBERG23 5221S 04012W 3X2NM
ICEBERG24 5220S 04016W 2X1NM ICEBERG25 5205S 03957W 2X1NM ICEBERG26 5207S 03953W
2X2NM ICEBERG27 5330S 03909W 11X3NM ICEBERG28 5020S 03951W 2X1NM ICEBERG29 5247S
03853W 3X1NM 4.ICEBERGS AREA A 6120S 02000W 4520S 02000W 4445S 03940W 5840S
03950W B 5840S 03950W 4220S 03910W 5315S 05010W 6015S 05100W C 6015S 05100W
5700S 05040W 6300S 06716W 6730S 06716W
HIGH 1017HPA 38S 59W MOV NE INTSF
LOW 1008HPA 47S 55W MOV E DPN EXP 46S 37W BY 07/2100 EXTENDS CFNT AT 47S 55W 42S
56W MOV E
LOW 996HPA 59S 58W MOV NE DPN EXP 52S 42W BY 07/1800 EXTENDS OFNT AT 52S 39W 56S
44W 60S 51W
HIGH 1017HPA 35S 36W NC
LOW 1005HPA 40S 20W MOV E EXTENDS CFNT AT 40S 20W 36S 24W 34S 30W MOV E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-12-8
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 5 WITH GUSTS VIS GOOD
OUTER RIO DE LA PLATA: SE 6/5 WITH GUSTS VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SE 6/5 WITH GUSTS VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 4 VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): VRB 3/4 INCR SECTOR N 5 BY 7/1800 VIS
GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 4/5 VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 4/5 VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S) N OF 50S: SECTOR N 5 WITH GUSTS DECR 4 BY
7/1800 VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SECTOR N 3/4 BACK SECTOR W
5 BY 7/1200 PROB OF RAIN VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 6/5 WITH GUSTS BACK SECTOR N 4/5 BY
7/1200 PROB OF RAIN VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SW 6/5 WITH GUSTS DECR VRB 4 BY 7/1800 PROB OF RAIN
STARTING EVENING VIS MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR S 6 WITH GUSTS BACK SECTOR N
5/6 WITH GUSTS BY 7/1800 LOW PROB OF RAIN TOWARDS NIGTH VIS MODERATE
W OF 45W: SECTOR S 5 PROB OF SH IMPR TOWARDS MORNING VIS MODERATE TO GOOD
REST OF THE AREA: SECTOR N 5 BACK SECTOR S BY 7/2100 PROB OF ISOL STORMS VIS
POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SW 5 VEER SECTOR N 4/5 WITH
GUSTS BY 7/1500 PROB OF RAIN FROM 7/1800 VIS GOOD TO MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 4 VEER SECTOR N 5/6 WITH GUSTS BY 7/1500 BACK SW 8
BY 7/2300 PROB OF RAIN STARTING EARLY MORNING VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 45W: SECTOR W 4 BACK SW 6/7 GUST
WITH 8 INTENSITY BY 7/1200 INCR 8 BY 7/2100 PROB OF RAIN STARTING EARLY MORNING
VIS POOR
W OF 55W: SW 5 VEER SECTOR N 4/3 BY 7/1800 VIS GOOD
REST OF THE AREA: SECTOR W 5 BACK SW 6 WITH GUSTS BY 7/0900 PROB OF RAIN VIS
POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55 - E OF 30W: SW 4 BACK SECTOR E 5
BY 7/2100 LOW PROB OF RAIN AND SNOW MIXTURE STARTING EVENING VIS GOOD OCNL
MODERATE
S OF 55 - E OF 30W: SW 4 VIS GOOD
REST OF THE AREA: VRB 3/4 BACK SECTOR E 4 BY 7/0900 VIS GOOD
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR N 4 INCR
SECTOR S 4/5 BY 7/1200 PROB OF RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
E OF 50 - S OF 55S: SECTOR N 5 VEER SECTOR E 4 BY 7/1200 LOW PROB OF RAIN AND
SNOW MIXTURE VIS GOOD OCNL MODERATE
REST OF THE AREA: SW 5/4 PROB OF RAIN AND SNOW MIXTURE IMPR STARTING EARLY
MORNING VIS MODERATE TO GOOD
DRAKE AREA (55S- 60S AND 60W- 67W): SW 5 BACK SECTOR N 5 WITH GUSTS BY 7/1200
PROB OF RAIN STARTING EVENING VIS GOOD TO POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 07, DECEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1424/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR N
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1010HPA 65S 42W MOV E INTSF
LOW 997HPA 60S 58W MOV E DPN
LOW 989HPA 65S 90W MOV E DPN EXTENDS CFNT AT
061400 UTC 1.SEA ICE LIMIT 6042S 02003W 5723S 02422W 6034S 02603W 5617S 02654W 5729S 03530W 5807S 04328W 5801S 04828W 5933S 05300W 6052S 05542W 6337S 06106W 6526S 06551W 6717S 06922W 2.ICEBERGS GREATER THAN 10NM A23A 5229S 04001W 32X24NM A74A 5529S 02628W 27X13NM A77 5223S 04302W 27X4NM A76C 5907S 03831W 16X7NM B15AB 5730S 04629W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5356S 04047W 9X2NM ICEBERG2 5254S 03905W 7X3NM ICEBERG3 5252S 04050W 3X3NM ICEBERG4 5146S 03617W 2X1NM ICEBERG5 5120S 03808W 4X2NM ICEBERG6 5254S 03656W 3X1NM ICEBERG7 5246S 04004W 4X1NM ICEBERG8 4930S 03657W 2X1NM ICEBERG9 5346S 04007W 2X1NM ICEBERG10 5126S 04102W 2X1NM ICEBERG11 5038S 02124W 3X1NM ICEBERG12 5218S 04103W 2X1NM ICEBERG13 5404S 04147W 4X1NM ICEBERG14 5022S 03835W 9X6NM ICEBERG15 5118S 03633W 8X2NM ICEBERG16 5218S 04057W 7X2NM ICEBERG17 5245S 03953W 4X2NM ICEBERG18 4940S 02913W 2X1NM ICEBERG19 5159S 03954W 4X2NM ICEBERG20 5217S 03948W 4X1NM ICEBERG21 5218S 03954W 2X1NM ICEBERG22 5209S 03935W 2X1NM ICEBERG23 5221S 04012W 3X2NM ICEBERG24 5220S 04016W 2X1NM ICEBERG25 5205S 03957W 2X1NM ICEBERG26 5207S 03953W 2X2NM ICEBERG27 5330S 03909W 11X3NM ICEBERG28 5020S 03951W 2X1NM ICEBERG29 5247S 03853W 3X1NM 4.ICEBERGS AREA A 6120S 02000W 4520S 02000W 4445S 03940W 5840S 03950W B 5840S 03950W 4220S 03910W 5315S 05010W 6015S 05100W C 6015S 05100W 5700S 05040W 6300S 06716W 6730S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-12-8
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST TOWARDS THE END OF THE PERIOD WORSENING VIS GOOD TO MODERATE OCNL POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS GOOD TO MODERATE OCNL VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST TOWARDS THE END OF THE PERIOD WORSENING VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS GOOD TO MODERATE OCNL VERY POOR
GERLACHE STRAIT : NE 3/4 VIS GOOD OCNL MODERATE
MARGARITA BAY : NE 3/4 VIS GOOD
EREBUS Y TERROR GULF : SECTOR N 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES TOWARDS EVENING IMPR VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): NE 8 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NE 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 E 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL TOWARDS MORNING WORSENING VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR W 3/4 PROB OF MIST VIS GOOD TO MODERATE OCNL POOR=