1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-12-15, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 493: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 FROM SECTOR
N WITH GUST BETWEEN 45S-50S 20W-35W FROM 16/0000
WARNING 491: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 50S-55S AND 20W-25W UNTIL 15/1500
PART 2 GENERAL SYNOPSIS AT 09:00UTC
141400 UTC 1.SEA ICE LIMIT 5949S 02000W 5624S 02747W 5800S 03130W 5914S 04218W
6000S 04408W 6009S 04630W 6059S 04743W 6023S 04947W 6105S 05351W 6159S 05507W
6401S 06128W 6615S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5246S 03955W 32X24NM
A74A 5708S 02430W 27X13NM A77 5027S 04034W 27X4NM A76C 5931S 03725W 16X7NM B15AB
5714S 04344W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5308S 04139W 9X2NM
ICEBERG2 5313S 03922W 7X3NM ICEBERG3 5230S 04129W 2X2NM ICEBERG4 5125S 03510W
2X1NM ICEBERG5 5157S 03736W 4X2NM ICEBERG6 5240S 03718W 3X1NM ICEBERG7 5312S
04008W 4X1NM ICEBERG8 5025S 03445W 2X1NM ICEBERG9 5104S 02225W 3X1NM ICEBERG10
5218S 04114W 2X1NM ICEBERG11 5352S 04147W 4X1NM ICEBERG12 5015S 03838W 5X4NM
ICEBERG13 5041S 03554W 8X2NM ICEBERG14 5213S 04101W 7X2NM ICEBERG15 5236S 03943W
4X2NM ICEBERG16 4953S 02905W 2X1NM ICEBERG17 5229S 04014W 4X2NM ICEBERG18 5246S
04010W 4X1NM ICEBERG19 5230S 04004W 2X1NM ICEBERG20 5258S 03959W 3X2NM ICEBERG21
5258S 039055W 2X1NM ICEBERG22 5217S 04004W 2X2NM ICEBERG23 5258S 04059W 11X3NM
ICEBERG24 5257S 04009W 2X1NM ICEBERG25 5228S 04053W 2X1NM ICEBERG26 5011S 03843W
3X1NM ICEBERG27 5022S 03839W 4X1NM ICEBERG28 5303S 04011W 2X1NM ICEBERG29 6048S
04529W 3X3NM 4.ICEBERGS AREA A 6110S 02000W 4500S 02000W 4815S 04000W 5920S
04017W B 5920S 04017W 4910S 04000W 5750S 04950W 6200S 04720W C 6200S 04720W
5800S 05012W 6250S 06716W 6707S 06716W POSITION, TIME AND SIZE OF ICEBERGS OR
STATIONARY RADAR TARGETS TO THE ARGENTINE HYDROGRAPHIC NAVAL SERVICE TO
LOW 40S 45W MOV SE DPN EXP 53S 20W BY 16/1200 EXTENDS CFNT AT 40S 15W 35S 51W
MOV SE ASOCIATED WITH WFNT AT 40S 45W 44S 39W 45S 32W
LOW 1005HPA 39S 59W MOV NE WKN EXTENDS CFNT AT 39S 59W 37S 60W 35S 63W MOV NE
LOW 990HPA 51S 58W MOV SE DPN EXP 54S 39W BY 16/1200 EXTENDS CFNT AT 51S 58W 48S
60W 45S 62W MOV SE EXP 54S 39W 50S 40W 46S 43W BY 16/1200
LOW 978HPA 58S 50W MOV NE EXP 57S 44W BY 16/1200 EXTENDS CFNT AT 60S 43W 53S 42W
43S 46W MOV SE EXP 61S 33W 57S 28W 54S 25W BY 16/1200 ASOCIATED WITH OFNT AT 60S
43W 59S 56W 54S 51W
RIDGE 43S 25W 50S 29W 60S 30W MOV E
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-12-16
COASTAL AREAS:
INNER RIO DE LA PLATA: SW 3/4 VEER NW 4 BACK SECTOR S 5/3 PROB OF RAIN TOWARDS
THE END OF THE PERIOD VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: SW 3 VEER SECTOR N 3 VEER SECTOR S 6/5 WITH GUSTS PROB OF
ISOL RAIN IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: SW 3/6 WITH GUSTS TEMPO BACK S 4/5 PROB OF ISOL RAIN
STORMS IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL GOOD
MAR DEL PLATA COASTS(3617S - 3830S): NW 3 BACK SECTOR S 6/5 WITH GUSTS MIST
DISSIPATING PROB OFISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): W 4 BACK SECTOR S 5 WITH GUSTS PROB
OF ISOL RAIN SPELLS OF GOOD WEATHER VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SW 4/5 WITH GUSTS TEMPO BACK SE 5 WITH
GUSTS PROB OF ISOL DRIZZLE IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO
GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 4 TEMPO BACK SECTOR S 5/6 WITH
GUSTS PROB OF ISOL RAIN IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO
GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SW 7/5 WITH GUSTS VEER NW 4/6 WITH GUSTS
PROB OF ISOL SH RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SW 5/6 WITH GUSTS VEER SECTOR N 4/6 WITH
GUSTS PROB OF ISOL SH RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SW 5/6 WITH GUSTS VEER W 5 WITH GUSTS PROB OF ISOL SH
RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: N 3/6 WITH GUSTS PROB OF ISOL SH
RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
E OF 50W: SECTOR N 5/3 WITH GUSTS BACK SECTOR S 5/6 WITH GUSTS PROB OF RAIN
STORMS SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR S 4 VEER SECTOR N 3 BACK SECTOR W 5/6 WITH GUSTS PROB
OF RAIN STORMS SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 35 - S OF 45S: SECTOR W 4/3 VEER
SECTOR N 4/8 WITH GUSTS BACK SECTOR W 5/4 WITH GUSTS PROB OF RAIN STORMS SPELLS
OF GOOD WEATHER VIS MODERATE TO POOR OCNL VERY POOR
W OF 35 - S OF 45S: SECTOR N 5/6 WITH GUSTS BACK W 5/3 VEER SECTOR N 5 WITH
GUSTS PROB OF RAIN STORMS SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
E OF 30 - N OF 45S: W 4/3 VEER SECTOR N 4/6 WITH GUSTS PROB OF ISOL RAIN SPELLS
OF GOOD WEATHER VIS MODERATE TO POOR
REST OF THE AREA: SECTOR N 3/6 WITH GUSTS BACK SECTOR S 3/5 WITH GUSTS PROB OF
RAIN STORMS SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: N 5 WITH GUSTS
BACK W 3/4 BACK SECTOR S 5 WITH GUSTS PROB OF RAIN STORMS SPELLS OF GOOD WEATHER
VIS MODERATE OCNL POOR
W OF 50 - N OF 45S: W 4 BACK SECTOR S 4/5 WITH GUSTS PROB OF ISOL SH RAIN
SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS PROB OF ISOL SH RAIN SPELLS OF GOOD
WEATHER VIS MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55 - E OF 25W: SECTOR W 8/4 WITH
GUSTS VEER SECTOR N 3/6 WITH GUSTS BACK W 6 WITH GUSTS PROB OF HVY SH RAIN
DURING THE EARLY MORNING SPELLS OF GOOD WEATHER VIS POOR OCNL VERY POOR
S OF 55 - E OF 25W: SECTOR W 6 WITH GUSTS VEER SECTOR N 3/5 WITH GUSTS PROB OF
RAIN SNOW FALL VIS MODERATE OCNL POOR
REST OF THE AREA: W 5 WITH GUSTS VEER SECTOR N 3/6 WITH GUSTS BACK SECTOR W 4
PROB OF RAIN SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR N 4/5 WITH
GUSTS BACK W 3/5 WITH GUSTS PROB OF RAIN SNOW FALL VIS MODERATE OCNL POOR
W OF 50 - N OF 55S: W 4/3 BACK SE 5 WITH GUSTS PROB OF RAIN FALL VIS MODERATE
OCNL POOR
E OF 50 - S OF 55S: SECTOR N 4/3 BACK SECTOR W 3/4 PROB OF FOG PATCHES RAIN
SNOW FALL VIS MODERATE OCNL POOR
REST OF THE AREA: SW 5/6 WITH GUSTS PROB OF RAIN SNOW FALL VIS MODERATE OCNL
POOR
DRAKE AREA (55S- 60S AND 60W- 67W): S 6 WITH GUSTS VEER SW 6/3 WITH GUSTS VEER N
4/5 WITH GUSTS PROB OF ISOL DRIZZLE SNOW FALL VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 15, 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 973HPA 60S 55W MOV E WKN
RIDGE 60S 85W 65S 80W 70S 70W MOV E WKN
LOW 989HPA 64S 35W MOV E WKN
141400 UTC 1.SEA ICE LIMIT 5949S 02000W 5624S 02747W 5800S 03130W 5914S 04218W 6000S 04408W 6009S 04630W 6059S 04743W 6023S 04947W 6105S 05351W 6159S 05507W 6401S 06128W 6615S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5246S 03955W 32X24NM A74A 5708S 02430W 27X13NM A77 5027S 04034W 27X4NM A76C 5931S 03725W 16X7NM B15AB 5714S 04344W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5308S 04139W 9X2NM ICEBERG2 5313S 03922W 7X3NM ICEBERG3 5230S 04129W 2X2NM ICEBERG4 5125S 03510W 2X1NM ICEBERG5 5157S 03736W 4X2NM ICEBERG6 5240S 03718W 3X1NM ICEBERG7 5312S 04008W 4X1NM ICEBERG8 5025S 03445W 2X1NM ICEBERG9 5104S 02225W 3X1NM ICEBERG10 5218S 04114W 2X1NM ICEBERG11 5352S 04147W 4X1NM ICEBERG12 5015S 03838W 5X4NM ICEBERG13 5041S 03554W 8X2NM ICEBERG14 5213S 04101W 7X2NM ICEBERG15 5236S 03943W 4X2NM ICEBERG16 4953S 02905W 2X1NM ICEBERG17 5229S 04014W 4X2NM ICEBERG18 5246S 04010W 4X1NM ICEBERG19 5230S 04004W 2X1NM ICEBERG20 5258S 03959W 3X2NM ICEBERG21 5258S 039055W 2X1NM ICEBERG22 5217S 04004W 2X2NM ICEBERG23 5258S 04059W 11X3NM ICEBERG24 5257S 04009W 2X1NM ICEBERG25 5228S 04053W 2X1NM ICEBERG26 5011S 03843W 3X1NM ICEBERG27 5022S 03839W 4X1NM ICEBERG28 5303S 04011W 2X1NM ICEBERG29 6048S 04529W 3X3NM 4.ICEBERGS AREA A 6110S 02000W 4500S 02000W 4815S 04000W 5920S 04017W B 5920S 04017W 4910S 04000W 5750S 04950W 6200S 04720W C 6200S 04720W 5800S 05012W 6250S 06716W 6707S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-12-16
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 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 S 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS W OF 60W: SW 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 S 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS GOOD TO MODERATE OCNL POOR
GERLACHE STRAIT : SW 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
MARGARITA BAY : NW 3/4 ISOL SNOW FALL PROB OF MIST FOG PATCHES 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 MODERATE TO POOR OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR W 3/4 VEER SECTOR S 4 BY 16/0900 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 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): SECTOR E 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 PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR=