1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-12-23, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 1003HPA 47S 33W MOV E WKN EXTENDS CFNT AT 47S 32W 44S 36W 40S 42W MOV E
STATIONARY FRONT 39S 44W 38S 49W 35S 54W
CFNT AT 60S 51W 54S 54W 50S 60W MOV E NC
LOW 990HPA 49S 66W MOV SE NC EXP 53S 43W BY 24/0000 EXTENDS CFNT AT 49S 65W 47S
66W ASOCIATED WITH WFNT AT 49S 66W 50S 64W 50S 62W
LOW 1001HPA 42S 64W MOV SE WKN EXTENDS CFNT AT 42S 64W 41S 65W MOV E
221400 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 5301S 04009W 32X24NM
A74A 5914S 02257W 27X13NM A77 4918S 03821W 27X4NM A76C 5945S 03713W 16X7NM B15AB
5724S 04304W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5249S 04134W 9X2NM
ICEBERG2 5330S 03909W 7X3NM ICEBERG3 5205S 04114W 2X2NM ICEBERG4 5139S 03514W
2X1NM ICEBERG5 5248S 03710W 3X1NM ICEBERG6 5308S 04030W 4X1NM ICEBERG7 5050S
03443W 3X1NM ICEBERG8 5220S 04033W 2X1NM ICEBERG9 5351S 04121W 4X1NM ICEBERG10
5010S 03920W 5X4NM ICEBERG11 5009S 03453W 8X2NM ICEBERG12 5231S 03931W 4X2NM
ICEBERG13 4952S 02945W 2X1NM ICEBERG14 5308S 04026W 4X2NM ICEBERG15 5242S 04014W
4X1NM ICEBERG16 5252S 03931W 3X2NM ICEBERG17 5256S 03952W 2X1NM ICEBERG18 5233S
03938W 2X2NM ICEBERG19 5219S 04211W 9X3NM ICEBERG20 5302S 03945W 2X1NM ICEBERG21
5212S 04025W 2X1NM ICEBERG22 4944S 03722W 4X1NM ICEBERG23 5251S 03942W 2X1NM
ICEBERG24 6047S 04529W 3X3NM ICEBERG25 6138S 04721W 4X3NM ICEBERG26 6103S 05152W
7X2NM ICEBERG27 4939S 03826W 2X1NM ICEBERG28 4937S 03807W 3X1NM ICEBERG29 4957S
03908W 3X1NM ICEBERG30 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
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-12-24
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 4/3 VEER VRB 3 BY 23/0900 AFTERWARDS SECTOR E 3 BY
23/1800 PROB OF FOG AND MIST IN PATCHES DURING THE MORNING LOW PROB OF SH
STARTING EVENING VIS MODERATE OCNL GOOD
OUTER RIO DE LA PLATA: SECTOR E 3 VEER VRB 3 BY 23/0900 AFTERWARDS SECTOR E 3 BY
23/1800 PROB OF FOG AND MIST IN PATCHES VIS MODERATE TO GOOD
URUGUAY SOUTH EAST COASTS: E 3 PROB OF FOG AND MIST IN PATCHES DURING THE
MORNING PROB OFISOL SH STORMS DURING THE EVENING VIS MODERATE OCNL GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 4 VEER VRB 3 BY 23/1500
AFTERWARDS SECTOR E 4/3 BY 23/2100 PROB OF FOG AND MIST IN PATCHES DURING THE
MORNING ISOL SH STORMS STARTING EVENING VIS MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 4 BACK SECTOR S 4 WITH GUSTS
BY 23/1200 AFTERWARDS SECTOR E 4/3 BY 23/2100 PROB OF ISOL SH STORMS IMPR
STARTING EARLY MORNING VIS MODERATE TO GOOD
PENINSULA DE VALDES COASTS(41S - 45S): NW 4 BACK SW 5/4 WITH GUSTS BY 23/0600
BACK SECTOR N 4 BY 23/1800 VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 5/6 GUST WITH 8 INTENSITY BACK
SECTOR S 4 BY 23/1200 AFTERWARDS SECTOR N 5 WITH GUSTS BY 23/1800 VIS GOOD OCNL
MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SW 6/5 WITH GUSTS VEER SECTOR N 6 GUST WITH
8 INTENSITY BY 23/1800 PROB OF ISOL SH RAIN IMPR STARTING EARLY MORNING VIS
MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4 WITH GUSTS VEER 5/6 GUST WITH 8
INTENSITY BY 23/1800 PROB OF ISOL SH RAIN VIS MODERATE OCNL POOR
ISLAS MALVINAS COASTS: SECTOR W 4 INCR 5 WITH GUSTS BY 23/1200 AFTERWARDS SECTOR
N 6 GUST WITH 8 INTENSITY BY 23/2100 PROB OF ISOL DRIZZLE RAIN VIS GOOD OCNL
MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: NW 5 WITH GUSTS PROB OF HVY RAIN
STORMS SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
E OF 50W: SECTOR N 4 WITH GUSTS VEER VRB 4 BY 23/1500 PROB OF HVY RAIN STORMS
IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO GOOD
REST OF THE AREA: SECTOR E 3 BACK SECTOR N 3 BY 23/0900 AFTERWARDS VRB 3 BY
23/1800 LOW PROB OF ISOL SH RAIN SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: NW 6 GUST WITH 8
INTENSITY BACK W 5/4 BY 23/0900 PROB OF RAIN STORMS SPELLS OF GOOD WEATHER VIS
POOR TO MODERATE
W OF 30 - N OF 45S: SECTOR W 4 VEER SECTOR N 3 BY 23/1500 PROB OF ISOL SH
STORMS IMPR STARTING EVENING VIS MODERATE OCNL POOR TO GOOD
REST OF THE AREA: SECTOR W 4 VEER NW 4/5 WITH GUSTS BY 23/1500 PROB OF SH RAIN
FROM IMPR 23/1200 VIS MODERATE TO GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: NW 5/6 WITH GUSTS BACK SW 6
GUST WITH 8 INTENSITY BY 23/2100 WORSENING WITH PROB OF ISOL SH STORMS STARTING
EVENING VIS GOOD TO MODERATE OCNL POOR
REST OF THE AREA: NW 5 WITH GUSTS VEER SW 6/5 GUST WITH 8 INTENSITY BY 23/1200
AFTERWARDS VRB 4 BY 23/2100 LOW PROB OF SH STARTING EARLY MORNING VIS MODERATE
TO GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR W 4 VEER NW 5 BY
23/0900 LOW PROB OF DRIZZLE VIS GOOD OCNL MODERATE
REST OF THE AREA: W 5 WITH GUSTS VEER NW 6/5 GUST WITH 8 INTENSITY BY 23/0900
PROB OF ISOL DRIZZLE RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL GOOD
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: NW 6/5 GUST WITH 8
INTENSITY BACK VRB 4/5 BY 23/1500 AFTERWARDS SW 6 WITH GUSTS BY 23/2100
WORSENING WITH PROB OF SH RAIN TOWARDS THE END OF THE PERIOD VIS MODERATE
W OF 50 - N OF 55S: SECTOR W 5 PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS
MODERATE
REST OF THE AREA: SECTOR W 6/5 GUST WITH 8 INTENSITY DECR 4 BY 23/2100 LOW PROB
OF ISOL DRIZZLE RAIN VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): W 6/5 GUST WITH 8 INTENSITY VEER NW 5/6 GUST
WITH 8 INTENSITY BY 23/1800 PROB OF SH RAIN VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 23, DECEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1474/2025 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR S IN 61S-63S 50W-60W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 964HPA 63S 55W MOV E DPN EXTENDS CFNT AT 63S 55W 62S 50W 60S 48W
LOW 974HPA 64S 35W MOV E WKN EXTENDS CFNT AT 64S 35W 63S 33W 62S 30W
LOW 975HPA 65S 85W MOV E DPN
221400 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 5301S 04009W 32X24NM A74A 5914S 02257W 27X13NM A77 4918S 03821W 27X4NM A76C 5945S 03713W 16X7NM B15AB 5724S 04304W 10X4NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5249S 04134W 9X2NM ICEBERG2 5330S 03909W 7X3NM ICEBERG3 5205S 04114W 2X2NM ICEBERG4 5139S 03514W 2X1NM ICEBERG5 5248S 03710W 3X1NM ICEBERG6 5308S 04030W 4X1NM ICEBERG7 5050S 03443W 3X1NM ICEBERG8 5220S 04033W 2X1NM ICEBERG9 5351S 04121W 4X1NM ICEBERG10 5010S 03920W 5X4NM ICEBERG11 5009S 03453W 8X2NM ICEBERG12 5231S 03931W 4X2NM ICEBERG13 4952S 02945W 2X1NM ICEBERG14 5308S 04026W 4X2NM ICEBERG15 5242S 04014W 4X1NM ICEBERG16 5252S 03931W 3X2NM ICEBERG17 5256S 03952W 2X1NM ICEBERG18 5233S 03938W 2X2NM ICEBERG19 5219S 04211W 9X3NM ICEBERG20 5302S 03945W 2X1NM ICEBERG21 5212S 04025W 2X1NM ICEBERG22 4944S 03722W 4X1NM ICEBERG23 5251S 03942W 2X1NM ICEBERG24 6047S 04529W 3X3NM ICEBERG25 6138S 04721W 4X3NM ICEBERG26 6103S 05152W 7X2NM ICEBERG27 4939S 03826W 2X1NM ICEBERG28 4937S 03807W 3X1NM ICEBERG29 4957S 03908W 3X1NM ICEBERG30 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
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-12-24
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 3/4 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 BACK SECTOR W 5 BY 23/1500 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR S 3/4 VEER SECTOR W BY 23/0600 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 8 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : SECTOR E 3/4 VIS GOOD
MARGARITA BAY : SECTOR E 3/5 VIS GOOD
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 PROB OF ISOL SNOW FALL PROB OF MIST VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): NE 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 E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR=