1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 25, NOVEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1371/2025 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS EREBUS Y TERROR GULF MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR S IN 60S-64S 50W-60W UNTIL 25/1200
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 970HPA 62S 43W
LOW 987HPA 62S 68W MOV E DPN
241400 UTC 1.SEA ICE LIMIT 6924S 02000W 6538S 05335W 6248S 04454W 6225S 03158W 6209S 02048W 6310S 05921W 6421S 06351W 5700S 03143W 5815S 04942W 5842S 05257W 6028S 05527W 6156S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5231S 04039W 32X24NM A74A 5415S 02642W 27X17NM A77 5354S 04224W 27X4NM A76C 5939S 03927W 16X7NM B15AB 5807S 04626W 11X4NM A23G 5305S 03831W 11X3NM 3.ICEBERGS SMALLER THAN 10NM A23I 5023S 03848W 9X6NM A23J 5132S 03647W 8X2NM ICEBERG1 5129S 03423W 3X1NM ICEBERG2 5556S 04203W 9X2NM ICEBERG3 5154S 03409W 3X1NM ICEBERG4 5248S 03851W 7X3NM ICEBERG5 4925S 02305W 4X2NM ICEBERG6 5223S 03747W 2X1NM ICEBERG7 6048S 04529W 3X2NM ICEBERG8 5110S 03802W 6X2NM ICEBERG9 5208S 03852W 3X3NM ICEBERG10 5255S 04126W 2X2NM ICEBERG11 5322S 03814W 3X3NM ICEBERG12 5133S 03723W 2X1NM ICEBERG13 5128S 03918W 4X2NM ICEBERG14 4957S 02452W 2X1NM ICEBERG15 5304S 03743W 3X1NM ICEBERG16 5247S 03959W 4X1NM ICEBERG17 5758S 04525W 3X1NM ICEBERG18 5258S 04116W 2X1NM ICEBERG19 5009S 03855W 2X1NM ICEBERG20 5010S 03844W 2X1NM ICEBERG21 5011S 03850W 2X1NM ICEBERG22 5304S 04105W 2X1NM ICEBERG23 5248S 04112W 3X1NM ICEBERG24 5404S 04031W 2X1NM ICEBERG25 5253S 04121W 2X1NM ICEBERG26 5300S 04130W 2X2NM ICEBERG27 5059S 02147W 3X1NM ICEBERG28 4938S 02837W 3X1NM 4.ICEBERGS AREA A 5938S 02000W 4600S 02000W 4600S 03100W 5800S 03100W B 5800S 03100W 4600S 03100W 4700S 03800W 5900S 03800W C 4700S 03800W 5900S 03800W 6400S 05700W 5900S 05700W D 6400S 05700W 6830S 06716W 6400S 06716W 6100S 05700W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-11-26
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 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 8 DECR 4 BY 25/1200 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 3/4 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 DECR 4 BY 25/1200 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
GERLACHE STRAIT : SECTOR E 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES WORSENING TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR OCNL VERY POOR
MARGARITA BAY : NE 3/5 VIS GOOD
EREBUS Y TERROR GULF : SECTOR S 8 DECR 4 BY 25/1200 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR W 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL 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 FOG PATCHES VIS GOOD TO MODERATE OCNL VERY POOR
NORTHERN WEDDELL SEA (60-68S 20-50W): SECTOR S 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 IMPR TOWARDS EVENING VIS MODERATE TO POOR OCNL VERY POOR=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-11-25, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 478: STRONG BARIC GRADIENT ON MOV E WILL PROVOKE WINDS FORCE 8 WITH GUST
BETWEEN 40S-45S AND 20W-50W FROM 25/0600
PART 2 GENERAL SYNOPSIS AT 21:00UTC
241400 UTC 1.SEA ICE LIMIT 6924S 02000W 6538S 05335W 6248S 04454W 6225S 03158W
6209S 02048W 6310S 05921W 6421S 06351W 5700S 03143W 5815S 04942W 5842S 05257W
6028S 05527W 6156S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5231S 04039W 32X24NM
A74A 5415S 02642W 27X17NM A77 5354S 04224W 27X4NM A76C 5939S 03927W 16X7NM B15AB
5807S 04626W 11X4NM A23G 5305S 03831W 11X3NM 3.ICEBERGS SMALLER THAN 10NM A23I
5023S 03848W 9X6NM A23J 5132S 03647W 8X2NM ICEBERG1 5129S 03423W 3X1NM ICEBERG2
5556S 04203W 9X2NM ICEBERG3 5154S 03409W 3X1NM ICEBERG4 5248S 03851W 7X3NM
ICEBERG5 4925S 02305W 4X2NM ICEBERG6 5223S 03747W 2X1NM ICEBERG7 6048S 04529W
3X2NM ICEBERG8 5110S 03802W 6X2NM ICEBERG9 5208S 03852W 3X3NM ICEBERG10 5255S
04126W 2X2NM ICEBERG11 5322S 03814W 3X3NM ICEBERG12 5133S 03723W 2X1NM ICEBERG13
5128S 03918W 4X2NM ICEBERG14 4957S 02452W 2X1NM ICEBERG15 5304S 03743W 3X1NM
ICEBERG16 5247S 03959W 4X1NM ICEBERG17 5758S 04525W 3X1NM ICEBERG18 5258S 04116W
2X1NM ICEBERG19 5009S 03855W 2X1NM ICEBERG20 5010S 03844W 2X1NM ICEBERG21 5011S
03850W 2X1NM ICEBERG22 5304S 04105W 2X1NM ICEBERG23 5248S 04112W 3X1NM ICEBERG24
5404S 04031W 2X1NM ICEBERG25 5253S 04121W 2X1NM ICEBERG26 5300S 04130W 2X2NM
ICEBERG27 5059S 02147W 3X1NM ICEBERG28 4938S 02837W 3X1NM 4.ICEBERGS AREA A
5938S 02000W 4600S 02000W 4600S 03100W 5800S 03100W B 5800S 03100W 4600S 03100W
4700S 03800W 5900S 03800W C 4700S 03800W 5900S 03800W 6400S 05700W 5900S 05700W
D 6400S 05700W 6830S 06716W 6400S 06716W 6100S 05700W
LOW 971HPA 61S 41W MOV E NC ASOCIATED WITH OFNT AT 56S 32W 64S 40W 60S 52W 57S
44W
LOW 985HPA 54S 32W MOV SE DPN EXTENDS CFNT AT 43S 40W 48S 30W 53S 30W MOV E
LOW 1003HPA 44S 56W MOV E DPN EXTENDS CFNT AT 39S 63W 40S 60W 43S 56W MOV NE
ASOCIATED WITH WFNT AT 45S 54W 45S 51W 44S 46W
HIGH 1025HPA 35S 31W MOV E NC
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-11-26
COASTAL AREAS:
INNER RIO DE LA PLATA: E 5 BACK N 5/4 VEER E 5 VIS GOOD
OUTER RIO DE LA PLATA: E 5 BACK N 5/4 VEER E 5 VIS GOOD
URUGUAY SOUTH EAST COASTS: NE 5 WITH GUSTS BACK N 5/4 VEER E 5 WITH GUSTS VIS
GOOD
MAR DEL PLATA COASTS(3617S - 3830S): N 5 WITH GUSTS DECR 4 VEER NE 5 VIS
GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): N 5 WITH GUSTS VEER E 4/5 WITH GUSTS
UNSTABLE PROB OFISOL SH STORMS VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SE 5 WITH GUSTS BACK NE 5/6 WITH GUSTS
VIS GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): E 6/5 WITH GUSTS BACK NE 5/6 WITH GUSTS
VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S) N OF 50S: VRB 5 WITH GUSTS BACK NE 5/7 WITH
GUSTS VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SECTOR W 6 WITH GUSTS DECR
VEER SECTOR N 5/6 WITH GUSTS UNSTABLE VIS GOOD OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SW 6 WITH GUSTS VEER NW 5 WITH GUSTS PROB OF
ISOL RAIN VIS MODERATE OCNL GOOD
ISLAS MALVINAS COASTS: SW 6/5 WITH GUSTS VEER W PROB OF ISOL SH VIS GOOD OCNL
MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 45W: W 4 VEER NW 5 WITH GUSTS VIS GOOD
REST OF THE AREA: NW 5 WITH GUSTS DECR UNSTABLE TOWARDS THE END OF THE PERIOD
VIS GOOD OCNL MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45 - W OF 30W: NW 7/6 WITH GUSTS
INCR 8 WITH GUSTS PROB OF RAIN VIS MODERATE OCNL POOR
S OF 45 - W OF 30W: SW 5 WITH GUSTS VEER NW BACK SW 6 WITH GUSTS PROB OF SH
RAIN VIS MODERATE OCNL GOOD
N OF 47 - E OF 30W: NW 7/6 WITH GUSTS INCR 8 WITH GUSTS PROB OF RAIN SPELLS OF
GOOD WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: N 7 WITH GUSTS BACK W 5 VEER N PROB OF RAIN SPELLS OF GOOD
WEATHER VIS MODERATE OCNL GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: NW 5 WITH GUSTS
INCR 8 WITH GUSTS BACK SECTOR S 5 PROB OF RAIN IMPR VIS MODERATE OCNL POOR TO
GOOD
W OF 50 - N OF 45S: NW 6 WITH GUSTS BACK SECTOR E 5 WITH GUSTS LOW PROB OF ISOL
RAIN IMPR VIS MODERATE TO GOOD
E OF 50 - S OF 45S: W 5 BACK SW 6 WITH GUSTS PROB OF RAIN NEXT SH VIS MODERATE
OCNL GOOD
REST OF THE AREA: VRB 5 WITH GUSTS VEER SW 6/5 WITH GUSTS PROB OF ISOL RAIN
IMPR VIS MODERATE TO GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55 - W OF 30W: SECTOR W 7/6 WITH
GUSTS PROB OF SH VIS MODERATE OCNL GOOD
S OF 55 - W OF 30W: NW 5 WITH GUSTS VEER VRB 5 WITH GUSTS PROB OF ISOL RAIN
SNOW FALL VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR N 6/7 WITH GUSTS BACK W 6 WITH GUSTS VEER NW PROB OF
SH RAIN SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55 - W OF 50W: SW 6/5 WITH GUSTS
LOW PROB OF SH VIS GOOD OCNL MODERATE
S OF 55 - W OF 50W: SW 7 WITH GUSTS DECR 5 PROB OF ISOL SNOW FALL VIS
MODERATE
REST OF THE AREA: NW 6 WITH GUSTS BACK SW 7/6 WITH GUSTS PROB OF SH OF RAIN SH
OF SNOW VIS MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): W 6/5 WITH GUSTS VEER NW PROB OF ISOL RAIN
NEXT RAIN TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL POOR
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