1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 25, DECEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1478/2025 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR E
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 968HPA 68S 40W MOV E WKN
LOW 970HPA 61S 60W MOV SE DPN EXTENDS CFNT AT
LOW 975HPA 67S 80W MOV E WKN
021400 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 5224S 04017W 32X24NM A74A 5502S 02626W 27X17NM A77 5252S 04216W 27X4NM A76C 5908S 03848W 16X7NM B15AB 5801S 04614W 11X4NM A23G 5329S 03842W 11X3NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5448S 04006W 9X2NM ICEBERG2 5124S 03440W 3X1NM ICEBERG3 5254S 03907W 7X3NM ICEBERG4 4718S 02107W 4X2NM ICEBERG5 5053S 03708W 6X2NM ICEBERG6 5204S 03847W 3X3NM ICEBERG7 5154S 04120W 2X2NM ICEBERG8 5318S 03954W 3X3NM ICEBERG9 5146S 03549W 2X1NM ICEBERG10 5117S 03827W 4X2NM ICEBERG11 5305S 03718W 3X1NM ICEBERG12 5247S 04011W 4X1NM ICEBERG13 5207S 04152W 2X1NM ICEBERG14 4942S 03839W 2X1NM ICEBERG15 4939S 03828W 2X1NM ICEBERG16 5206S 04154W 3X1NM ICEBERG17 5402S 03959W 2X1NM ICEBERG18 5153S 04135W 2X1NM ICEBERG19 5205S 04149W 2X2NM ICEBERG20 5046S 02210W 3X1NM ICEBERG21 5214S 04058W 2X1NM ICEBERG22 5549S 04131W 4X1NM ICEBERG23 5044S 03747W 9X6NM ICEBERG24 5118S 03633W 8X2NM ICEBERG25 5119S 04039W 7X2NM ICEBERG26 5224S 04034W 4X2NM ICEBERG27 5002S 02922W 2X1NM ICEBERG28 5202S 03949W 4X2NM ICEBERG29 5229S 03949W 4X1NM ICEBERG30 5231S 03949W 2X1NM ICEBERG31 5228S 03958W 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 00:00 UTC VALID UNTIL 00:00 UTC 2025-12-26
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 4/5 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR N 3/4 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 8 PROB OF ISOL SNOW FALL PROB OF MIST VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR E 8 PROB OF ISOL SNOW FALL PROB OF MIST VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : SECTOR E 3/4 BACK SECTOR N BY 25/1200 VIS GOOD
MARGARITA BAY : NE 4/5 VIS GOOD
EREBUS Y TERROR GULF : SECTOR S 4/5 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): SECTOR W 4/5 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS GOOD TO MODERATE OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 3/5 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS GOOD TO MODERATE OCNL POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): SECTOR N 3/5 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR W 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-12-25, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 501: STRONG BARIC GRADIENT ON MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST IN SOUTH PATAGONIA COASTS SOUTHERN OF 50
PART 2 GENERAL SYNOPSIS AT 21:00UTC
241400 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 10NM A23A 5304S 04011W 32X24NM
A74A 5919S 02243W 27X13NM A77 4936S 03717W 27X4NM A76C 5951S 03713W 16X7NM B15AB
5730S 04106W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5231S 04216W 9X2NM
ICEBERG2 5328S 03910W 7X3NM ICEBERG3 5204S 04057W 2X2NM ICEBERG4 5135S 03459W
2X1NM ICEBERG5 5244S 03704W 3X1NM ICEBERG6 5308S 04035W 4X1NM ICEBERG7 5225S
04026W 2X1NM ICEBERG8 5051S 04122W 4X1NM ICEBERG9 5004S 03845W 5X4NM ICEBERG10
5011S 03436W 8X2NM ICEBERG11 5231S 03931W 4X2NM ICEBERG12 5003S 02941W 2X1NM
ICEBERG13 5309S 04027W 4X2NM ICEBERG14 5242S 04014W 4X1NM ICEBERG15 5252S 03931W
3X2NM ICEBERG16 5256S 03952W 2X1NM ICEBERG17 5233S 03938W 2X2NM ICEBERG18 5210S
04213W 9X3NM ICEBERG19 5259S 03946W 2X1NM ICEBERG20 5302S 03945W 2X1NM ICEBERG21
4949S 03717W 4X1NM ICEBERG22 5251S 03942W 2X1NM ICEBERG23 6047S 04529W 3X3NM
ICEBERG24 6140S 04710W 4X3NM ICEBERG25 6056S 05203W 7X2NM ICEBERG26 4937S 03839W
2X1NM ICEBERG27 4932S 03753W 3X1NM ICEBERG28 5008S 03856W 3X1NM ICEBERG29 5305S
03945W 3X1NM 4.ICEBERGS AREA A 6000S 02000W 4400S 02000W 4400S 03400W 6000S
03500W B 6000S 03500W 4400S 03400W 4800S 04100W 4100S 06100W C 4100S 06120W
4800S 04100W 6300S 06716W 6700S 06716W
CFNT AT 46S 35W 50S 30W 60S 20W MOV E
FRONTAL WAVE 35S 36W 40S 30W 42S 23W 45S 17W MOV E
LOW 970HPA DRAKE AREA (55S- 60S AND 60W- 67W) MOV E NC EXTENDS CFNT AT 36S 60W
50S 50W 60S 55W MOV E
STRONG BARIC GRADIENT DRAKE AREA (55S- 60S AND 60W- 67W) FIN DEL MUNDO COASTS
SOUTH PATAGONIA COASTS ISLAS MALVINAS COASTS MOV E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-12-26
COASTAL AREAS:
INNER RIO DE LA PLATA: E 4 VEER SE 6/7 WITH GUSTS BY 25/0300 BACK E 5 PROB OF
ISOL STORMS IMPR STARTING EARLY MORNING VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: E 4 VEER SE 6/7 WITH GUSTS BY 25/0300 BACK E 5 PROB OF
ISOL STORMS IMPR STARTING EARLY MORNING VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: NE 4 VEER SE 5/6 WITH GUSTS BY 25/0300 BACK E 5 PROB
OF ISOL STORMS IMPR STARTING EARLY MORNING VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): S 6/5 WITH GUSTS BACK NE 4/7 WITH GUSTS
LOW PROB OF ISOL STORMS IMPR STARTING EARLY MORNING VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): S 5/4 WITH GUSTS BACK N 4/5 BACK
SECTOR S 6 WITH GUSTS VIS GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SE 5 WITH GUSTS BACK NW 5 WITH GUSTS
BACK SECTOR S 6/5 WITH GUSTS UNSTABLE STARTING EVENING VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): VRB 4 BACK N 5 WITH GUSTS BACK SW 5/4
WITH GUSTS VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S) N OF 50S: N 5 BACK SECTOR W 6/5 WITH GUSTS
VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SECTOR W 8 WITH GUSTS DECR
7 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SW 7/6 WITH GUSTS VEER W WITH GUSTS PROB OF
ISOL RAIN VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR W 6/7 WITH GUSTS DECR 6 WITH GUSTS PROB OF ISOL
RAIN VIS MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: NW 5 WITH GUSTS DECR 4 PROB OF ISOL
SH RAIN IMPR VIS MODERATE TO GOOD
W OF 45W: NW 4 BACK SECTOR S 4/5 WITH GUSTS PROB OF ISOL SH STORMS IMPR
STARTING EARLY MORNING VIS MODERATE TO GOOD
REST OF THE AREA: NW 3/4 BACK S 5 WITH GUSTS PROB OF SH STARTING EVENING VIS
GOOD OCNL MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45 - W OF 30W: NW 4 INCR 5 WITH
GUSTS UNSTABLE VIS GOOD OCNL MODERATE
S OF 45 - W OF 30W: VRB 4 VEER NW 7 WITH GUSTS BACK W 8 WITH GUSTS WORSENING
WITH PROB OF ISOL RAIN STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
REST OF THE AREA: NW 4 INCR 5/6 WITH GUSTS PROB OF ISOL RAIN VIS GOOD OCNL
MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: VRB 4 VEER NW 5/6
WITH GUSTS BACK SW 6/5 WITH GUSTS PROB OF ISOL SH IMPR STARTING EARLY MORNING
VIS GOOD OCNL MODERATE
W OF 50 - N OF 45S: SW 6/5 WITH GUSTS VEER NW 4/5 WITH GUSTS LOW PROB OF SH VIS
MODERATE OCNL GOOD
W OF 50 - S OF 45S: SW 7 WITH GUSTS VEER W 7/6 WITH GUSTS PROB OF ISOL RAIN
SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: N 4/5 WITH GUSTS BACK SECTOR W 7 WITH GUSTS PROB OF SH RAIN
NEXT ISOL SH VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: NW 5/4 BACK SW 4/3 BACK VRB 3
PROB OF ISOL DRIZZLE RAIN IMPR STARTING EARLY MORNING VIS GOOD OCNL MODERATE
REST OF THE AREA: SW 5 VEER SECTOR N 4/5 WITH GUSTS WORSENING WITH PROB OF SH
RAIN STARTING EVENING VIS GOOD OCNL MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR N 4/6 WITH GUSTS BACK
SECTOR W 5 WITH GUSTS PROB OF SH RAIN NEXT ISOL SH VIS MODERATE OCNL GOOD
REST OF THE AREA: N 6 WITH GUSTS BACK SECTOR W 5/6 WITH GUSTS PROB OF ISOL SH
RAIN VIS MODERATE OCNL GOOD
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 7/6 WITH GUSTS PROB OF RAIN VIS
MODERATE OCNL POOR
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