1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 26, DECEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1483/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E WEAKENING EXPECTED 60S 66W 70S 90W AROUND 27/0000 PROVOKES WINDS FORCE 8 FROM SECTOR S
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 960HPA 63S 70W MOV E DPN EXTENDS CFNT AT
LOW 972HPA 62S 40W MOV E WKN
251400 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 5300S 04018W 32X24NM A74A 5912S 02228W 27X13NM A77 5004S 03709W 27X4NM A76C 5953S 03714W 16X7NM B15AB 5757S 04126W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5221S 04232W 9X2NM ICEBERG2 5319S 03918W 7X3NM ICEBERG3 5202S 04051W 2X2NM ICEBERG4 5135S 03459W 2X1NM ICEBERG5 5240S 03701W 3X1NM ICEBERG6 5310S 04024W 4X1NM ICEBERG7 5225S 04026W 2X1NM ICEBERG8 5051S 04122W 4X1NM ICEBERG9 5004S 03845W 5X4NM ICEBERG10 5014S 03427W 8X2NM ICEBERG11 5231S 03931W 4X2NM ICEBERG12 5003S 02941W 2X1NM ICEBERG13 5310S 04017W 4X2NM ICEBERG14 5242S 04014W 4X1NM ICEBERG15 5249S 03932W 3X2NM ICEBERG16 5300S 03940W 2X1NM ICEBERG17 5233S 03938W 2X2NM ICEBERG18 5202S 04200W 9X3NM ICEBERG19 5304S 03930W 2X1NM ICEBERG20 5259S 03943W 2X1NM ICEBERG21 5016S 03714W 4X1NM ICEBERG22 5251S 03942W 2X1NM ICEBERG23 6047S 04529W 3X3NM ICEBERG24 6139S 04704W 4X3NM ICEBERG25 6056S 05213W 7X2NM ICEBERG26 4935S 03844W 2X1NM ICEBERG27 4931S 03740W 3X1NM ICEBERG28 4954S 03842W 3X1NM 4.ICEBERGS AREA A6202S02000W 4352S02000W 4449S03951W 6133S04005W B6133S04005W 4449S03951W 5907S05814W 6221S05832W C6221S05852W 5907S05814W 6443S06716W 6832S06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-12-27
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 3/5 VEER SECTOR S BY 27/0600 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: SECTOR W 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 4/5 VEER BY 27/0600 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: SECTOR S 5/6 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : SECTOR E 4/5 VIS GOOD
MARGARITA BAY : SECTOR E 5/6 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 S 8 DECR 4 BY 27/0000 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR S 3/4 PROB OF ISOL SNOW FALL MIST VIS GOOD TO MODERATE OCNL POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): SECTOR N 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 E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-12-26, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 502: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST IN FIN DEL MUNDO COASTS UNTIL 26/0600
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1011HPA 36S 51W MOV E INTSF EXP 36S 40W BY 27/0000
LOW 987HPA 51S 36W DPN EXTENDS CFNT AT 47S 33W 41S 35W 37S 42W
LOW 1011HPA 40S 60W MOV SE WKN EXTENDS CFNT AT RINCON BAHIA BLANCA COASTS MOV
E
WFNT AT DRAKE AREA (55S- 60S AND 60W- 67W)
251400 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 5300S 04018W 32X24NM
A74A 5912S 02228W 27X13NM A77 5004S 03709W 27X4NM A76C 5953S 03714W 16X7NM B15AB
5757S 04126W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5221S 04232W 9X2NM
ICEBERG2 5319S 03918W 7X3NM ICEBERG3 5202S 04051W 2X2NM ICEBERG4 5135S 03459W
2X1NM ICEBERG5 5240S 03701W 3X1NM ICEBERG6 5310S 04024W 4X1NM ICEBERG7 5225S
04026W 2X1NM ICEBERG8 5051S 04122W 4X1NM ICEBERG9 5004S 03845W 5X4NM ICEBERG10
5014S 03427W 8X2NM ICEBERG11 5231S 03931W 4X2NM ICEBERG12 5003S 02941W 2X1NM
ICEBERG13 5310S 04017W 4X2NM ICEBERG14 5242S 04014W 4X1NM ICEBERG15 5249S 03932W
3X2NM ICEBERG16 5300S 03940W 2X1NM ICEBERG17 5233S 03938W 2X2NM ICEBERG18 5202S
04200W 9X3NM ICEBERG19 5304S 03930W 2X1NM ICEBERG20 5259S 03943W 2X1NM ICEBERG21
5016S 03714W 4X1NM ICEBERG22 5251S 03942W 2X1NM ICEBERG23 6047S 04529W 3X3NM
ICEBERG24 6139S 04704W 4X3NM ICEBERG25 6056S 05213W 7X2NM ICEBERG26 4935S 03844W
2X1NM ICEBERG27 4931S 03740W 3X1NM ICEBERG28 4954S 03842W 3X1NM 4.ICEBERGS AREA
A6202S02000W 4352S02000W 4449S03951W 6133S04005W B6133S04005W 4449S03951W
5907S05814W 6221S05832W C6221S05852W 5907S05814W 6443S06716W 6832S06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-12-27
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 5 BACK SECTOR N BY 26/0600 DECR VRB 3 BY 26/1800
LOW PROB OF COASTAL MIST DURING THE EARLY MORNING DISSIPATING STARTING EARLY
MORNING VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR E 6 WITH GUSTS BACK SECTOR N 4 BY 26/0600 VEER
SECTOR E 6 GUST WITH 8 INTENSITY BY 26/1800 LOW PROB OF COASTAL MIST TOWARDS
EARLY MORNING DISSIPATING TOWARDS MORNING VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR E 6 WITH GUSTS BACK SECTOR N 4 BY 26/0600 VEER
SECTOR E 6 GUST WITH 8 INTENSITY BY 26/1800 LOW PROB OF COASTAL MIST TOWARDS
EARLY MORNING DISSIPATING TOWARDS MORNING VIS GOOD OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 5 WITH GUSTS BACK SECTOR W BY
26/0300 VEER SECTOR N 6/7 GUST WITH 8 INTENSITY BY 26/1500 LOW PROB OF COASTAL
MIST STARTING EARLY MORNING DISSIPATING STARTING EARLY MORNING VIS GOOD TO
MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 6 WITH GUSTS BACK SECTOR N
5/6 WITH GUSTS BY 26/0900 BACK SECTOR W BY 26/2100 PROB OF HVY STORMS STARTING
EVENING VIS GOOD TO MODERATE OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 6/7 GUST WITH 8 INTENSITY BACK
SECTOR W BY 26/1800 PROB OF ISOL SH STORMS STARTING EVENING VIS GOOD TO POOR
OCNL VERY POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 6/7 GUST WITH 8 INTENSITY BACK
SECTOR W BY 26/0300 BACK SECTOR S 6 WITH GUSTS BY 26/2100 PROB OF RAIN STORMS
STARTING EARLY MORNING VIS GOOD TO POOR OCNL VERY POOR
SOUTH PATAGONIA COASTS(48S - 54S) N OF 51S: NW 6 GUST WITH 8 INTENSITY BACK W
BY 26/0600 BACK SECTOR S BY 26/1500 PROB OF ISOL SH RAIN STARTING EARLY MORNING
VIS MODERATE TO POOR OCNL VERY POOR
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SECTOR W 7 GUST WITH 8
INTENSITY PROB OF ISOL RAIN STARTING EARLY MORNING VIS POOR OCNL VERY POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 8 WITH GUSTS DECR 7 GUST WITH 8
INTENSITY BY 26/0600 PROB OF ISOL RAIN STARTING EARLY MORNING VIS VERY POOR TO
POOR
ISLAS MALVINAS COASTS: SECTOR W 6 WITH GUSTS VEER SECTOR N BY 26/0900 BACK
SECTOR W BY 26/1800 PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL
POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR N 4 BACK SECTOR W 5 BY
26/0600 BACK SECTOR S 6 WITH GUSTS BY 26/1800 PROB OF ISOL RAIN STORMS IMPR
TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
W OF 30 - E OF 50W: SECTOR S 5 WITH GUSTS DECR VRB 4/3 BY 26/1500 INCR SECTOR N
6 WITH GUSTS BY 26/2100 PROB OF ISOL RAIN IMPR STARTING EVENING VIS MODERATE TO
GOOD
REST OF THE AREA: SECTOR N 5/6 WITH GUSTS LOW PROB OF ISOL RAIN IMPR TOWARDS
EARLY MORNING VIS MODERATE TO GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: NW 5 WITH GUSTS
BACK SW 6 WITH GUSTS BY 26/0900 VEER W BY 26/2100 PROB OF ISOL RAIN IMPR TOWARDS
THE END OF THE PERIOD VIS MODERATE TO GOOD
E OF 30 - S OF 45S: NW 5 BACK SECTOR W 6/7 GUST WITH 8 INTENSITY BY 26/0600
PROB OF ISOL RAIN VIS MODERATE TO POOR
REST OF THE AREA: SECTOR W 6/7 GUST WITH 8 INTENSITY DECR 6 BY 26/2100 PROB OF
ISOL RAIN IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR W 5/6 WITH
GUSTS VEER SECTOR N BY 26/2100 VIS GOOD
E OF 50 - S OF 45S: SECTOR W 7/6 WITH GUSTS VEER SECTOR N BY 26/2100 PROB OF
ISOL RAIN IMPR TOWARDS MORNING VIS POOR TO MODERATE OCNL GOOD
REST OF THE AREA: SECTOR W 6 WITH GUSTS VEER SECTOR N 6/7 GUST WITH 8 INTENSITY
BY 26/0600 PROB OF ISOL RAIN STORMS SPELLS OF GOOD WEATHER VIS POOR OCNL VERY
POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: VRB 4 INCR SECTOR W 5/6 WITH
GUSTS BY 26/1200 PROB OF RAIN AND SNOW MIXTURE STARTING EARLY MORNING VIS
MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 6 WITH GUSTS BACK SECTOR W BY 26/0300 PROB OF RAIN
AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR W 6 WITH GUSTS VEER
SECTOR N BY 26/2100 PROB OF RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 6 WITH GUSTS PROB OF RAIN VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 6 WITH GUSTS BACK SECTOR W 6/7 GUST
WITH 8 INTENSITY BY 26/0300 PROB OF RAIN AND SNOW MIXTURE VIS MODERATE TO POOR
OCNL VERY POOR
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