1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-12-17, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 498: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 WITH GUST BETWEEN
45S-50S AND 35W-50W
WARNING 495: LOW 972HPA AT 55S 63W MOV E DEEPENING EXPECTED 57S 40W BY 17/2100
PROVOKES WINDS FORCE 8 FROM SECTOR S WITH GUST IN DRAKE AREA (55S- 60S AND 60W-
67W)
WARNING 494: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST IN ISLAS MALVINAS COASTS UNTIL 18/0000
PART 2 GENERAL SYNOPSIS AT 09:00UTC
161400 UTC 1.SEA ICE LIMIT 6014S 02000W 6045S 02459W 6012S 03114W 5936S 03936W
6026S 04547W 6217S 04820W 6107S 05236W 6237S 05841W 6357S 06233W 6502S 06425W
6527S 06549W 6617S 06717W 2.ICEBERGS GREATER THAN 10NM A23A 5249S 03959W 32X24NM
A74A 5747S 02344W 27X13NM A77 5003S 04015W 27X4NM A76C 5939S 03717W 16X7NM B15AB
5702S 04339W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5318S 04143W 9X2NM
ICEBERG2 5324S 03929W 7X3NM ICEBERG3 5227S 04133W 2X2NM ICEBERG4 5125S 03532W
2X1NM ICEBERG5 5238S 03715W 3X1NM ICEBERG6 5313S 04019W 4X1NM ICEBERG7 5053S
03439W 3X1NM ICEBERG8 5111S 02149W 3X1NM ICEBERG9 5214S 04110W 2X1NM ICEBERG10
5353S 04128W 4X1NM ICEBERG11 5001S 03838W 5X4NM ICEBERG12 5032S 03533W 8X2NM
ICEBERG13 5237S 03942W 4X2NM ICEBERG14 4941S 02943W 2X1NM ICEBERG15 5240S 04019W
4X2NM ICEBERG16 5255S 04013W 4X1NM ICEBERG17 5257S 03943W 3X2NM ICEBERG18 5255S
03946W 2X1NM ICEBERG19 5225S 04004W 2X2NM ICEBERG20 5249S 04122W 11X3NM
ICEBERG21 5301S 03959W 2X1NM ICEBERG22 5219S 04045W 2X1NM ICEBERG23 5016S 03859W
3X1NM ICEBERG24 5007S 03819W 4X1NM ICEBERG25 5306S 03954W 2X1NM ICEBERG26 6048S
04529W 3X3NM ICEBERG27 6136S 04726W 4X3NM ICEBERG28 6057S 05049W 7X2NM
4.ICEBERGS AREA A 6010S 02000W 4600S 02000W 4700S 03400W 6000S 03400W B 6000S
03400W 4700S 03400W 4900S 04000W 4100S 06020W C 4100S 06020W 4900S 04000W 6700S
06716W 6700S 06716W
LOW 972HPA 55S 63W MOV E DPN EXP 57S 40W BY 17/2100 EXTENDS CFNT AT 55S 63W 54S
54W 45S 59W MOV E
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-12-18
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR N 4/5 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR N 4/5 VIS GOOD
URUGUAY SOUTH EAST COASTS: SECTOR W 3 BACK SECTOR N 6 WITH GUSTS BY 18/0300 VIS
GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 5/6 WITH GUSTS PROB OF ISOL RAIN
STORMS DURING THE EARLY MORNING VIS MODERATE TO POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 6/7 WITH GUSTS BACK SECTOR S
5/6 WITH GUSTS BY 18/0900 VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR W 5 WITH GUSTS VEER SECTOR S 6
WITH GUSTS PROB OF ISOL RAIN VIS MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 4 BACK SECTOR S 5/6 WITH GUSTS
BY 18/0900 PROB OF ISOL RAIN VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 6/7 WITH GUSTS PROB OF ISOL RAIN
VIS POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 6/7 GUST WITH 8 INTENSITY PROB OF
ISOL RAIN VIS POOR
ISLAS MALVINAS COASTS: SECTOR W 8 WITH GUSTS DECR 7/6 PROB OF ISOL RAIN VIS
POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR N 6/7 WITH GUSTS BACK SECTOR
S 5 BY 18/0900 PROB OF ISOL SH STORMS VIS POOR
W OF 30W - E OF 45W: SECTOR S 5 WITH GUSTS VEER SECTOR N BY 17/2100 VIS GOOD
REST OF THE AREA: NW 5/6 WITH GUSTS PROB OF ISOL RAIN VIS GOOD OCNL MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR N 6 GUST WITH 8
INTENSITY PROB OF ISOL RAIN STORMS VIS POOR
REST OF THE AREA: SECTOR W 5 WITH GUSTS VEER NW 6/7 GUST WITH 8 INTENSITY BY
18/0600 PROB OF ISOL RAIN VIS GOOD TO POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W - S OF 45S: SECTOR W 5 WITH
GUSTS VEER NW 8 WITH GUSTS BY 17/1500 PROB OF ISOL RAIN VIS VERY POOR
W OF 50W - S OF 45S: SECTOR W 7/6 WITH GUSTS VIS POOR
REST OF THE AREA: NW 7 WITH GUSTS BACK SECTOR E 5 BY 18/0900 PROB OF ISOL RAIN
VIS POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 5 WITH GUSTS VEER SECTOR N 6
WITH GUSTS BY 18/0000 PROB OF PRECIPITATIONS VIS GOOD TO VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55S: SECTOR E 5 WITH GUSTS VEER
SECTOR S WITH GUSTS BY 18/0000 PROB OF PRECIPITATIONS VIS MODERATE
REST OF THE AREA: SECTOR W 6/7 GUST WITH 8 INTENSITY PROB OF ISOL RAIN VIS
POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 8 WITH GUSTS DECR 6 BY 18/0000 PROB
OF RAIN AND SNOW MIXTURE VIS POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 17, DECEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 976HPA 65S 40W MOV E WKN
RIDGE 60S 50W 62S 60W 68S 70W MOV SE WKN
161400 UTC 1.SEA ICE LIMIT 6014S 02000W 6045S 02459W 6012S 03114W 5936S 03936W 6026S 04547W 6217S 04820W 6107S 05236W 6237S 05841W 6357S 06233W 6502S 06425W 6527S 06549W 6617S 06717W 2.ICEBERGS GREATER THAN 10NM A23A 5249S 03959W 32X24NM A74A 5747S 02344W 27X13NM A77 5003S 04015W 27X4NM A76C 5939S 03717W 16X7NM B15AB 5702S 04339W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5318S 04143W 9X2NM ICEBERG2 5324S 03929W 7X3NM ICEBERG3 5227S 04133W 2X2NM ICEBERG4 5125S 03532W 2X1NM ICEBERG5 5238S 03715W 3X1NM ICEBERG6 5313S 04019W 4X1NM ICEBERG7 5053S 03439W 3X1NM ICEBERG8 5111S 02149W 3X1NM ICEBERG9 5214S 04110W 2X1NM ICEBERG10 5353S 04128W 4X1NM ICEBERG11 5001S 03838W 5X4NM ICEBERG12 5032S 03533W 8X2NM ICEBERG13 5237S 03942W 4X2NM ICEBERG14 4941S 02943W 2X1NM ICEBERG15 5240S 04019W 4X2NM ICEBERG16 5255S 04013W 4X1NM ICEBERG17 5257S 03943W 3X2NM ICEBERG18 5255S 03946W 2X1NM ICEBERG19 5225S 04004W 2X2NM ICEBERG20 5249S 04122W 11X3NM ICEBERG21 5301S 03959W 2X1NM ICEBERG22 5219S 04045W 2X1NM ICEBERG23 5016S 03859W 3X1NM ICEBERG24 5007S 03819W 4X1NM ICEBERG25 5306S 03954W 2X1NM ICEBERG26 6048S 04529W 3X3NM ICEBERG27 6136S 04726W 4X3NM ICEBERG28 6057S 05049W 7X2NM 4.ICEBERGS AREA A 6010S 02000W 4600S 02000W 4700S 03400W 6000S 03400W B 6000S 03400W 4700S 03400W 4900S 04000W 4100S 06020W C 4100S 06020W 4900S 04000W 6700S 06716W 6700S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-12-18
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR S 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: SECTOR E 3/4 VEER SECTOR S 4 BY 18/0000 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 S 3/4 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 E 3/4 VEER SECTOR S 4 BY 18/0000 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : VRB 3 VIS GOOD
MARGARITA BAY : SECTOR N 3/4 BACK SECTOR W BY 18/0300 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES WORSENING TOWARDS NIGTH VIS MODERATE TO POOR OCNL VERY POOR
EREBUS Y TERROR GULF : SECTOR S 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS VERY POOR TO POOR OCNL MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SW 3/4 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 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): SE 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 MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR=