1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 27, NOVEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1375/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR W IN 60S-65S 70W-90W FROM 27/0900
1376/2025 STRONG BARIC GRADIENT ON SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR E IN 65S-70S 70W-90W FROM 27/0900
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 991HPA 68S 50W MOV E WKN
LOW 993HPA 67S 70W MOV E DPN
RIDGE 60S 80W 65S 80W 70S 80W MOV E WKN
261400 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 5227S 04027W 32X24NM A74A 5425S 02631W 27X17NM A77 5336S 04004W 27X4NM A76C 5931S 03837W 16X7NM B15AB 5807S 04627W 11X4NM A23G 5315S 03824W 11X3NM 3.ICEBERGS SMALLER THAN 10NM ICEBERG1 5140S 03442W 3X1NM ICEBERG2 5535S 04102W 9X2NM ICEBERG3 5124S 03440W 3X1NM ICEBERG4 5249S 03900W 7X3NM ICEBERG5 4859S 02233W 4X2NM ICEBERG6 5208S 03755W 2X1NM ICEBERG7 5101S 03721W 6X2NM ICEBERG8 5216S 03843W 3X3NM ICEBERG9 5230S 04142W 2X2NM ICEBERG10 5329S 03843W 3X3NM ICEBERG11 5140S 03701W 2X1NM ICEBERG12 5129S 03920W 4X2NM ICEBERG13 5020S 02345W 2X1NM ICEBERG14 5304S 03734W 3X1NM ICEBERG15 5255S 04013W 4X1NM ICEBERG16 5242S 04152W 2X1NM ICEBERG17 4953S 03828W 2X1NM ICEBERG18 5010S 03834W 2X1NM ICEBERG19 5239S 04148W 3X1NM ICEBERG20 5349S 04059W 2X1NM ICEBERG21 5236S 04146W 2X1NM ICEBERG22 5244S 04155W 2X2NM ICEBERG23 5053S 02144W 3X1NM ICEBERG24 4939S 02746W 3X1NM ICEBERG25 5205S 04118W 2X1NM ICEBERG26 5227S 04139W 2X1NM ICEBERG27 5549S 04131W 4X1NM ICEBERG28 5037S 03851W 9X6NM ICEBERG29 5129S 03645W 8X2NM 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 2025-11-28
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W: 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 BY 27/1500 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS GOOD OCNL VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: 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 REST OF THE AREA: SECTOR E 3/4 VEER SECTOR S BY 27/0900 PROB OF ISOL SNOW FALL PROB OF MIST VIS GOOD TO MODERATE OCNL POOR
GERLACHE STRAIT : SECTOR N 3/4 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
MARGARITA BAY : NE 3/4 VIS GOOD
EREBUS Y TERROR GULF : SECTOR S 3/4 BACK SECTOR E BY 27/1200 PROB OF ISOL SNOW FALL PROB OF MIST FOG PATCHES TOWARDS MORNING IMPR VIS VERY POOR TO MODERATE OCNL POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR N 4/5 TEMPO VEER SECTOR W 8 BY 27/0900 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 4/5 BACK SECTOR E 8 BY 27/0900 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR 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=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-11-27, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 480: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM NW WITH
GUST BETWEEN 45S-50S AND 40W-55W
WARNING 479: LOW 980HPA AT DRAKE AREA (55S- 60S AND 60W- 67W) MOV E NOT CHANGE
PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN FIN DEL MUNDO COASTS DRAKE AREA
(55S- 60S AND 60W- 67W)
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 980HPA DRAKE AREA (55S- 60S AND 60W- 67W) MOV E NC EXTENDS CFNT AT 47S 60W
52S 52W 58S 54W ASOCIATED WITH OFNT AT 58S 54W 59S 60W 55S 63W
FRONTAL WAVE PENINSULA DE VALDES COASTS MOV E NC
HIGH 1023HPA 38S 43W MOV E NC
OFNT AT 55S 20W 56S 30W 60S 30W
261400 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 5227S 04027W 32X24NM
A74A 5425S 02631W 27X17NM A77 5336S 04004W 27X4NM A76C 5931S 03837W 16X7NM B15AB
5807S 04627W 11X4NM A23G 5315S 03824W 11X3NM 3.ICEBERGS SMALLER THAN 10NM
ICEBERG1 5140S 03442W 3X1NM ICEBERG2 5535S 04102W 9X2NM ICEBERG3 5124S 03440W
3X1NM ICEBERG4 5249S 03900W 7X3NM ICEBERG5 4859S 02233W 4X2NM ICEBERG6 5208S
03755W 2X1NM ICEBERG7 5101S 03721W 6X2NM ICEBERG8 5216S 03843W 3X3NM ICEBERG9
5230S 04142W 2X2NM ICEBERG10 5329S 03843W 3X3NM ICEBERG11 5140S 03701W 2X1NM
ICEBERG12 5129S 03920W 4X2NM ICEBERG13 5020S 02345W 2X1NM ICEBERG14 5304S 03734W
3X1NM ICEBERG15 5255S 04013W 4X1NM ICEBERG16 5242S 04152W 2X1NM ICEBERG17 4953S
03828W 2X1NM ICEBERG18 5010S 03834W 2X1NM ICEBERG19 5239S 04148W 3X1NM ICEBERG20
5349S 04059W 2X1NM ICEBERG21 5236S 04146W 2X1NM ICEBERG22 5244S 04155W 2X2NM
ICEBERG23 5053S 02144W 3X1NM ICEBERG24 4939S 02746W 3X1NM ICEBERG25 5205S 04118W
2X1NM ICEBERG26 5227S 04139W 2X1NM ICEBERG27 5549S 04131W 4X1NM ICEBERG28 5037S
03851W 9X6NM ICEBERG29 5129S 03645W 8X2NM 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 2025-11-28
COASTAL AREAS:
INNER RIO DE LA PLATA: E 5 WITH GUSTS BACK NE WITH GUSTS BACK E 4 PROB OF ISOL
SH STORMS TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: E 5 WITH GUSTS BACK NE WITH GUSTS BACK E 4 PROB OF ISOL
SH STORMS TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: NE 6/5 WITH GUSTS UNSTABLE TOWARDS THE END OF THE
PERIOD VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): NE 5/6 WITH GUSTS PROB OF SH STORMS
TOWARDS THE END OF THE PERIOD VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): N 5/6 WITH GUSTS DECR TEMPO BACK
SECTOR S 6/7 WITH GUSTS BY 27/1800 PROB OF ISOL SH STORMS VIS MODERATE OCNL
POOR
PENINSULA DE VALDES COASTS(41S - 45S): VRB 5 WITH GUSTS VEER SE 6/7 WITH GUSTS
BY 27/0900 PROB OF ISOL SH STORMS IMPR TOWARDS THE END OF THE PERIOD VIS
MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): W 5 WITH GUSTS BACK SE 6 WITH GUSTS
UNSTABLE VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S) N OF 50S: VRB 5 WITH GUSTS BACK SECTOR S 5
WITH GUSTS LOW PROB OF ISOL RAIN VIS MODERATE OCNL GOOD
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: SW 7 WITH GUSTS DECR 5 LOW
PROB OF ISOL SH VIS MODERATE TO GOOD
FIN DEL MUNDO COASTS(54S - 55S): SW 8 WITH GUSTS DECR 5 PROB OF ISOL RAIN VIS
POOR OCNL MODERATE
ISLAS MALVINAS COASTS: SW 7/6 WITH GUSTS PROB OF ISOL SH VIS MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: S 5/4 BACK SECTOR N 3/4 VIS GOOD
REST OF THE AREA: NE 5 VEER N 5/6 WITH GUSTS VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) S OF 43S: W 5 WITH GUSTS VEER NW 8/7
WITH GUSTS PROB OF ISOL RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: SW 5 VEER NW 5/6 WITH GUSTS VIS GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) S OF 45 - E OF 55W: NW 8 WITH GUSTS
BACK SW 5 PROB OF ISOL RAIN SH IMPR VIS MODERATE OCNL POOR TO GOOD
N OF 45 - E OF 55W: NW 7/6 WITH GUSTS PROB OF ISOL SH RAIN VIS MODERATE OCNL
GOOD
REST OF THE AREA: NW 6 WITH GUSTS BACK SECTOR S 5/7 WITH GUSTS PROB OF ISOL SH
RAIN VIS MODERATE OCNL GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: W 6/5 WITH GUSTS VEER N 5/6
WITH GUSTS BACK W 7 WITH GUSTS PROB OF ISOL RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: SW 5 WITH GUSTS BACK S 4 UNSTABLE VIS GOOD OCNL MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: N 5/6 WITH GUSTS
BACK W 7/6 WITH GUSTS PROB OF RAIN NXT ISOL SH VIS MODERATE OCNL GOOD
W OF 50 - N OF 55S: W 6/7 WITH GUSTS BACK SW 6 WITH GUSTS PROB OF ISOL SH VIS
MODERATE
E OF 50 - S OF 55S: VRB 4 VEER E 5 WITH GUSTS VEER S LOW PROB OF ISOL RAIN VIS
GOOD OCNL MODERATE
REST OF THE AREA: VRB 6 WITH GUSTS VEER S 6/5 WITH GUSTS PROB OF RAIN IMPR VIS
MODERATE OCNL POOR TO GOOD
DRAKE AREA (55S- 60S AND 60W- 67W): SW 8 WITH GUSTS DECR 5 VEER NW 6 WITH GUSTS
PROB OF SH OF RAIN SH OF SNOW NXT RAIN VIS MODERATE OCNL POOR
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