1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 07, NOVEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1301/2025 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR W IN 60S-70S 70W-90W
1302/2025 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR W BY 7/0300 IN 60S-64S 60W-70W
1303/2025 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR W BY 7/1200 IN 60S-62S 60W-70W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 948HPA 70S 50W MOV E DPN
LOW 987HPA 64S 45W MOV E WKN
RIDGE 60S 30W 65S 32W 70S 35W
LOW 974HPA 70S 65W EXTENDS CFNT AT 70S 65W 65S 65W 60S 60W
061400 UTC 1.SEA ICE LIMIT 5720S 02000W 5739S 02132W 5718S 02627W 5821S 03551W 5959S 04131W 6034S 04637W 6033S 05009W 6208S 05539W 6320S 05921W 6343S 06157W 6420S 06410W 6604S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5246S 04008W 32X24NM A74A 5322S 03023W 27X17NM A77 5552S 04123W 27X4NM A76C 6038S 04109W 16X7NM B15AB 5920S 04646W 11X4NM A23G 5149S 03837W 11X3NM A23I 4944S 03922W 19X8NM 3.ICEBERGS SMALLER THAN 10NM A23J 5153S 03853W 8X2NM ICEBERG1 4934S 03454W 7X1NM ICEBERG2 5127S 03727W 3X1NM ICEBERG3 5450S 04347W 9X2NM ICEBERG4 5418S 04019W 3X1NM ICEBERG5 5246S 03633W 3X1NM ICEBERG6 5110S 03749W 3X2NM ICEBERG7 5041S 03222W 3X1NM ICEBERG8 5217S 03857W 7X3NM ICEBERG9 5333S 03857W 2X1NM ICEBERG10 5223S 04033W 2X2NM ICEBERG11 5219S 03726W 3X1NM ICEBERG12 5055S 02622W 4X2NM ICEBERG13 5232S 03652W 2X1NM ICEBERG14 5201S 03812W 4X1NM ICEBERG15 4937S 03623W 3X1NM ICEBERG16 6054S 04543W 3X2NM ICEBERG17 5141S 03529W 2X1NM ICEBERG18 5056S 03819W 6X2NM ICEBERG19 5141S 03834W 3X3NM ICEBERG20 5232S 03801W 7X6NM ICEBERG21 5205S 03840W 3X3NM ICEBERG22 5147S 03848W 2X1NM ICEBERG23 5135S 03936W 4X2NM ICEBERG24 5051S 02649W 3X1NM ICEBERG25 5233S 03806W 3X1NM ICEBERG26 5203S 03827W 3X1NM ICEBERG27 5256S 03943W 4X1NM ICEBERG28 5259S 03948W 2X1NM 4.ICEBERGS AREA A 5700S 02000W 4300S 02000W 4500S 02800W 5800S 02900W B 5800S 02900W 4500S 02800W 4900S 04800W 6000S 04800W C 6000S 04800W 4930S 04800W 6500S 06716W 6700S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-11-8
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 4/5 INCR 8 BY 7/0300 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR OCNL MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 4/5 INCR 8 BY 7/1200 PROB OF MIST FOG PATCHES ISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 4/5 INCR 8 BY 7/0300 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR OCNL MODERATE
MAR DE LA FLOTA COASTS : SECTOR W 4/5 INCR 8 BY 7/2100 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
GERLACHE STRAIT : SECTOR N 3/4 BACK SECTOR W BY 7/1500 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
MARGARITA BAY : SECTOR N 5/7 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS MODERATE TO POOR OCNL VERY POOR
EREBUS Y TERROR GULF : SECTOR N 3/4 PROB OF MIST FOG PATCHES VIS MODERATE TO POOR OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR W 8 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL IMPR STARTING EVENING VIS VERY POOR TO POOR OCNL MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 8 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL IMPR STARTING EVENING VIS VERY POOR TO POOR OCNL MODERATE
NORTHERN WEDDELL SEA (60-68S 20-50W): SECTOR W 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=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-11-7, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 445: LOW 984HPA AT 36S 30W MOV SE DEEPENING EXPECTED 40S 21W BY 08/0000
PROVOKES WINDS FORCE 9 FROM SECTOR S WITH GUST BETWEEN 40S-45S AND 35W-20W
WARNING 444: LOW 984HPA AT 36S 30W MOV SE DEEPENING EXPECTED 40S 21W BY 08/0000
PROVOKES WINDS FORCE 10 AROUND ITSELF WITH GUST BETWEEN 35S-40S AND 35W-20W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 984HPA 36S 30W MOV SE DPN EXP 40S 21W BY 08/0000 EXTENDS WFNT AT 36S 29W 37S
26W 37S 23W
HIGH 1020HPA 39S 55W MOV N NC EXP 36S 55W BY 08/0000
LOW 1008HPA 40S 68W MOV E WKN EXP 40S 60W BY 08/0000
HIGH 1019HPA 48S 66W MOV NE INTSF EXP 45S 63W BY 08/0000
061400 UTC 1.SEA ICE LIMIT 5720S 02000W 5739S 02132W 5718S 02627W 5821S 03551W
5959S 04131W 6034S 04637W 6033S 05009W 6208S 05539W 6320S 05921W 6343S 06157W
6420S 06410W 6604S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5246S 04008W 32X24NM
A74A 5322S 03023W 27X17NM A77 5552S 04123W 27X4NM A76C 6038S 04109W 16X7NM B15AB
5920S 04646W 11X4NM A23G 5149S 03837W 11X3NM A23I 4944S 03922W 19X8NM 3.ICEBERGS
SMALLER THAN 10NM A23J 5153S 03853W 8X2NM ICEBERG1 4934S 03454W 7X1NM ICEBERG2
5127S 03727W 3X1NM ICEBERG3 5450S 04347W 9X2NM ICEBERG4 5418S 04019W 3X1NM
ICEBERG5 5246S 03633W 3X1NM ICEBERG6 5110S 03749W 3X2NM ICEBERG7 5041S 03222W
3X1NM ICEBERG8 5217S 03857W 7X3NM ICEBERG9 5333S 03857W 2X1NM ICEBERG10 5223S
04033W 2X2NM ICEBERG11 5219S 03726W 3X1NM ICEBERG12 5055S 02622W 4X2NM ICEBERG13
5232S 03652W 2X1NM ICEBERG14 5201S 03812W 4X1NM ICEBERG15 4937S 03623W 3X1NM
ICEBERG16 6054S 04543W 3X2NM ICEBERG17 5141S 03529W 2X1NM ICEBERG18 5056S 03819W
6X2NM ICEBERG19 5141S 03834W 3X3NM ICEBERG20 5232S 03801W 7X6NM ICEBERG21 5205S
03840W 3X3NM ICEBERG22 5147S 03848W 2X1NM ICEBERG23 5135S 03936W 4X2NM ICEBERG24
5051S 02649W 3X1NM ICEBERG25 5233S 03806W 3X1NM ICEBERG26 5203S 03827W 3X1NM
ICEBERG27 5256S 03943W 4X1NM ICEBERG28 5259S 03948W 2X1NM 4.ICEBERGS AREA A
5700S 02000W 4300S 02000W 4500S 02800W 5800S 02900W B 5800S 02900W 4500S 02800W
4900S 04800W 6000S 04800W C 6000S 04800W 4930S 04800W 6500S 06716W 6700S
06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2025-11-8
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 5 WITH GUSTS VEER SECTOR S BY 7/2100 PROB OF
ISOL RAIN VIS MODERATE
OUTER RIO DE LA PLATA: SECTOR E 6/5 WITH GUSTS VRB PROB OF ISOL RAIN VIS
MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR E 5 WITH GUSTS PROB OF RAIN STARTING EARLY
MORNING VIS MODERATE OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 5 WITH GUSTS VEER SECTOR E BY
7/1800 LOW PROB OF DRIZZLE IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 5 WITH GUSTS DECR VRB 4 BY
7/1800 PROB OF RAIN ISOL SH STARTING EARLY MORNING VIS GOOD TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR E 5 WITH GUSTS VEER SE 5/6 WITH
GUSTS BY 7/0900 PROB OF RAIN HVY STORMS NEXT ISOL STORMS IMPR STARTING EVENING
VIS POOR TO MODERATE OCNL GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR E 5 WITH GUSTS DECR VRB 4 INCR
SECTOR N 6 WITH GUSTS BY 7/1800 PROB OF MIST DURING THE EARLY MORNING
DISSIPATING TOWARDS MORNING VIS GOOD OCNL MODERATE
SOUTH PATAGONIA COASTS(48S - 54S) N OF 51S: VRB 4/3 INCR SECTOR N 5 WITH GUSTS
BY 7/1800 VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S) REST OF THE AREA: VRB 4 INCR SECTOR W 6 WITH
GUSTS BY 7/0600 VIS GOOD
FIN DEL MUNDO COASTS(54S - 55S): VRB 4 INCR SECTOR W 5/6 BY 7/1200 VIS GOOD
ISLAS MALVINAS COASTS: SW 5 WITH GUSTS VEER W 6 WITH GUSTS BY 7/1500 LOW PROB OF
ISOL RAIN IMPR TOWARDS MORNING VIS MODERATE TO GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 25W: SECTOR E 7 GUST WITH 8 INTENSITY
VEER SECTOR N 8 WITH GUSTS BY 7/0600 BACK SECTOR W 9 BY 7/2100 PROB OF RAIN
STORMS VIS VERY POOR TO POOR
W OF 25 - E OF 35W: SECTOR S 10/9 WITH GUSTS VEER SECTOR W BY 7/2100 PROB OF
RAIN HVY STORMS IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR
W OF 35 - E OF 50W: SECTOR S 6/5 WITH GUSTS LOW PROB OF ISOL RAIN VIS
MODERATE
REST OF THE AREA: VRB 3/4 INCR SECTOR E 5 WITH GUSTS BY 7/1800 LOW PROB OF ISOL
RAIN TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 35 - N OF 45S: SECTOR S 8/9 WITH
GUSTS PROB OF ISOL RAIN VIS MODERATE
E OF 35 - S OF 45S: SECTOR S 5/6 WITH GUSTS INCR 7 GUST WITH 8 INTENSITY BY
7/1800 PROB OF ISOL RAIN STARTING EVENING VIS GOOD TO MODERATE OCNL POOR
W OF 30 - N OF 45S: SECTOR S 6/5 WITH GUSTS PROB OF ISOL RAIN VIS GOOD OCNL
MODERATE
REST OF THE AREA: VRB 3/4 LOW PROB OF ISOL RAIN VIS GOOD OCNL MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SW 5/6 WITH GUSTS PROB OF
ISOL RAIN VIS MODERATE
W OF 50 - N OF 45S: VRB 4 INCR SECTOR E 5/6 WITH GUSTS BY 7/2100 LOW PROB OF
ISOL RAIN IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
REST OF THE AREA: SECTOR W 5 WITH GUSTS BACK SECTOR S BY 7/0900 LOW PROB OF
ISOL RAIN IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 5 WITH GUSTS VEER SECTOR N BY
7/1200 BACK SECTOR W 6 WITH GUSTS BY 7/2100 PROB OF RAIN AND SNOW MIXTURE VIS
MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W: SECTOR W 5/6 WITH GUSTS PROB
OF RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 6/7 GUST WITH 8 INTENSITY PROB OF RAIN AND SNOW
MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE TO POOR OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/7 GUST WITH 8 INTENSITY PROB OF
ISOL RAIN VIS MODERATE TO POOR OCNL VERY POOR
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