1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-12-30, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 514: STRONG BARIC GRADIENT ON MOV E WILL PROVOKE WINDS FORCE 8 FROM
SECTOR W WITH GUST IN SOUTH PATAGONIA COASTS FIN DEL MUNDO COASTS FROM 30/2100
WARNING 513: LOW 969HPA AT 48S 31W MOV E NOT CHANGE EXPECTED 20S 50W BY 30/1200
PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN CENTRAL EAST AREA (40S- 50S
AND 20W- 40W) UNTIL 30/1800
PART 2 GENERAL SYNOPSIS AT 21:00UTC
291400 UTC 1.SEA ICE LIMIT 6133S 02000W 6054S 02325W 6114S 03114W 5916S 03443W
6107S 04321W 6220S 04748W 6054S 05120W 6224S 05801W 6342S 05951W 6348S 06017W
6444S 06422W 6637S 06717W 2.ICEBERGS GREATER THAN 10MN A23A 5303S 04023W 32X24NM
A74A 5844S 02158W 27X13NM A77 5034S 03649W 27X4NM A76C 6007S 03714W 16X7NM B15AB
5809S 04107W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5144S 04326W 9X2NM
ICEBERG2 5322S 03916W 7X3NM ICEBERG3 5150S 04041W 2X2NM ICEBERG4 5233S 03724W
3X1NM ICEBERG5 5301S 03954W 4X1NM ICEBERG6 5233S 04013W 2X1NM ICEBERG7 5351S
04121W 4X1NM ICEBERG8 4935S 03859W 5X4NM ICEBERG9 5020S 03301W 4X2NM ICEBERG10
5313S 03940W 4X2NM ICEBERG11 4955S 02943W 2X1NM ICEBERG12 5310S 04002W 4X2NM
ICEBERG13 5251S 04024W 2X1NM ICEBERG14 5256S 03930W 3X2NM ICEBERG15 5253S 03919W
2X1NM ICEBERG16 5112S 04046W 9X3NM ICEBERG17 5251S 03912W 2X1NM ICEBERG18 5237S
04042W 2X1NM ICEBERG19 5039S 03817W 4X1NM ICEBERG20 5256S 03919W 2X1NM ICEBERG21
6047S 04529W 3X3NM ICEBERG22 6142S 04652W 4X3NM ICEBERG23 6051S 05224W 7X2NM
ICEBERG24 4953S 03933W 2X1NM ICEBERG25 4942S 03722W 3X1NM ICEBERG26 4950S 03914W
3X1NM ICEBERG27 5044S 03651W 4X1NM ICEBERG28 5029S 03624W 3X1NM ICEBERG29 5301S
03922W 2X1NM ICEBERG30 5750S 03933W 4X1NM ICEBERG31 5301S 04047W 9X3NM ICEBERG32
5244S 03918W 2X2NM ICEBERG33 5247S 03916W 4X1NM ICEBERG34 5234S 03902W 2X1NM
4.ICEBERGS AREA A 6200S 02000W 4510S 02000W 4500S 04010W 6127S 04000W B 6127S
04000W 4815S 04000W 5357S 05020W 6238S 04710W C 6238S 06710W 5658S 04919W 6248S
06716W 6818S 06716W
LOW 969HPA 48S 31W MOV E NC EXP 50S 20W BY 30/1200 EXTENDS CFNT AT 48S 22W 43S
23W 37S 28W MOV E ASOCIATED WITH OFNT AT 48S 22W 51S 28W 49S 34W
HIGH 1011HPA 36S 50W MOV NE NC EXTENDS RIDGE AT 35S 50W 44S 52W 47S 54W 56S 55W
MOV E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-12-31
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 3 BACK NW BY 30/1200 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR N 4 BACK NW 3 BY 30/1200 LOW PROB OF SH DURING THE
EVENING VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR N 4 BACK NW 3 BY 30/1200 BACK W BY 30/1800 VIS
GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 4/3 WITH GUSTS DECR VRB 3 BY
30/1200 AFTERWARDS SECTOR E 3/4 BY 30/1800 LOW PROB OF SH DURING THE EVENING VIS
GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4 DECR VRB 3 BY 30/0600 INCR
SECTOR E 3/4 BY 30/1800 PROB OF SH IMPR STARTING EARLY MORNING VIS MODERATE TO
GOOD
PENINSULA DE VALDES COASTS(41S - 45S): VRB 3 INCR SECTOR W 4 BY 30/0900 VIS
GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 3/4 BACK SECTOR W 4/5 WITH
GUSTS BY 30/0900 BACK SECTOR S 4 WITH GUSTS BY 30/2100 VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): VRB 4 INCR SECTOR W 5/6 WITH GUSTS BY
30/1500 BACK SW 7/8 WITH GUSTS BY 30/2100 PROB OF SH RAIN SPELLS OF GOOD WEATHER
VIS MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 5 WITH GUSTS VEER NW 6 GUST WITH 8
INTENSITY BY 30/1500 BACK SW 7/8 WITH GUSTS BY 30/2100 PROB OF SH RAIN VIS POOR
OCNL MODERATE
ISLAS MALVINAS COASTS: SECTOR N 4/5 WITH GUSTS BACK SECTOR W 5/6 GUST WITH 8
INTENSITY BY 30/2100 PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR W 6 GUST WITH 8 INTENSITY
DECR 5 BY 30/1800 PROB OF INTERMITTENT SH RAIN VIS MODERATE OCNL POOR
E OF 45W: SW 5 WITH GUSTS VEER W 4 BY 30/1200 PROB OF ISOL RAIN PROB
OFINTERMITTENT SH VIS MODERATE OCNL GOOD
REST OF THE AREA: VRB 3 INCR W 4 BY 30/0900 AFTERWARDS VRB 4/3 BY 30/1800 VIS
GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR W 8 WITH GUSTS BACK
SW 6/5 GUST WITH 8 INTENSITY BY 30/1800 PROB OF SH RAIN VIS POOR OCNL VERY
POOR
W OF 30 - S OF 45S: SW 8/7 WITH GUSTS DECR 6/5 WITH GUSTS BY 30/1200 PROB OF
DRIZZLE RAIN VIS POOR TO MODERATE
REST OF THE AREA: W 8/7 WITH GUSTS BACK SW 6 GUST WITH 8 INTENSITY BY 30/0900
PROB OF SH RAIN VIS POOR TO MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SW 6/5 GUST WITH 8 INTENSITY
DECR VRB 4/3 BY 30/1200 PROB OF ISOL RAIN IMPR STARTING EVENING VIS MODERATE
OCNL POOR TO GOOD
REST OF THE AREA: VRB 4 INCR SECTOR N 5 WITH GUSTS BY 30/1200 BACK SECTOR W
WITH GUSTS BY 30/2100 WORSENING WITH PROB OF SH RAIN VIS GOOD TO MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR S 5 WITH GUSTS INCR 6 GUST WITH
8 INTENSITY BY 30/1500 PROB OF ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS
MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR S 5/3 VEER SECTOR W 3
VIS GOOD
W OF 50 - N OF 55S: VRB 3 INCR SECTOR N 5 WITH GUSTS BACK W 4 PROB OF SH RAIN
VIS GOOD TO MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 4/5 WITH GUSTS VEER SECTOR E 5 BY 30/1500 PROB OF
DRIZZLE RAIN VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 6/4 WITH GUSTS VEER VRB 4 BY
30/0900 INCR SW 5/6 GUST WITH 8 INTENSITY BY 30/2100 PROB OF RAIN VIS POOR OCNL
MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 30, DECEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1498/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV SE WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR N IN 60S-66S 70W-90W UNTIL 30/0900
1499/2025 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV SE WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR N IN 66S-70S 70W-90W UNTIL 30/1800
1500/2025 STRONG BARIC GRADIENT GERLACHE STRAIT MOV SE DEEPENING PROVOKES WINDS FORCE 8 FROM NE IN 60S-66S 60W-70W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 966HPA 68S 90W MOV E WKN EXTENDS CFNT AT 68S 90W 65S 80W 60S 75W
RIDGE 60S 55W 65S 55W 70S 55W MOV E WKN
281400 UTC 1.SEA ICE LIMIT 6133S 02000W 6054S 02325W 6114S 03114W 5916S 03443W 6107S 04321W 6220S 04748W 6054S 05120W 6224S 05801W 6342S 05951W 6348S 06017W 6444S 06422W 6637S 06717W 2.ICEBERGS GREATER THAN 10MN A23A 5302S 04019W 32X24NM A74A 5845S 02157W 27X13NM A77 5031S 03701W 27X4NM A76C 6001S 03712W 16X7NM B15AB 5806S 04135W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5150S 04338W 9X2NM ICEBERG2 5322S 03916W 7X3NM ICEBERG3 5153S 04042W 2X2NM ICEBERG4 5233S 03708W 3X1NM ICEBERG5 5316S 04006W 4X1NM ICEBERG6 5222S 04013W 2X1NM ICEBERG7 5351S 04121W 4X1NM ICEBERG8 4940S 03844W 5X4NM ICEBERG9 5020S 03352W 4X2NM ICEBERG10 5312S 03928W 4X2NM ICEBERG11 4958S 02947W 2X1NM ICEBERG12 5310S 03959W 4X2NM ICEBERG13 5251S 04024W 4X1NM ICEBERG14 5252S 03937W 3X2NM ICEBERG15 5254S 03920W 2X1NM ICEBERG16 5128S 04106W 9X3NM ICEBERG17 5256S 03923W 2X1NM ICEBERG18 5237S 04041W 2X1NM ICEBERG19 5042S 03803W 4X1NM ICEBERG20 5300S 03928W 2X1NM ICEBERG21 6048S 04529W 3X3NM ICEBERG22 6140S 04650W 4X3NM ICEBERG23 6054S 05223W 7X2NM ICEBERG24 4938S 03909W 2X1NM ICEBERG25 4942S 03722W 3X1NM ICEBERG26 4944S 03903W 3X1NM ICEBERG27 5044S 03659W 4X1NM ICEBERG28 5029S 03624W 3X1NM ICEBERG29 5302S 03923W 2X1NM ICEBERG30 5744S 04007W 4X1NM 4.ICEBERGS AREA A 6200S 02000W 4510S 02000W 4500S 04010W 6127S 04000W B 6127S 04000W 4815S 04000W 5357S 05020W 6238S 04710W C 6238S 06710W 5658S 04919W 6248S 06716W 6818S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-12-31
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NE 5/6 DECR 4 BY 30/1200 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NE 3/4 PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: NE 4/6 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: NE 4/6 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL WORSENING TOWARDS NIGTH VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : NE 8 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
MARGARITA BAY : NE 4/6 PROB OF ISOL SNOW FALL VIS GOOD
EREBUS Y TERROR GULF : NE 3/4 PROB OF MIST FOG PATCHES IMPR TOWARDS MORNING VIS VERY POOR TO MODERATE OCNL GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR N 8 DECR 3 BY 30/0900 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES IMPR TOWARDS NIGTH VIS VERY POOR TO POOR OCNL MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 8 DECR 3 BY 30/1800 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES IMPR TOWARDS NIGTH VIS VERY POOR TO POOR OCNL MODERATE
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): SECTOR S 3/4 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR=