1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2025-11-17, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 465: LOW 960HPA AT 57S 72W MOV NE DEEPENING EXPECTED 50S 47W BY 18/1200
WILL PROVOKE WINDS FORCE 9 AROUND ITSELF WITH GUST FROM 17/1800
WARNING 464: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 9 FROM W WITH GUST IN
GOLFO DE SAN JORGE COASTS SOUTH PATAGONIA COASTS FIN DEL MUNDO COASTS ISLAS
MALVINAS COASTS
WARNING 462: COLD FRONT AT 49S 28W 40S 39W 35S 42W MOV SE WILL PROVOKE WINDS
FORCE 8 FROM SECTOR N WITH GUST BETWEEN 35S-50S AND 20W-30W FROM 17/1800
WARNING 461: COLD FRONT AT 49S 29W 40S 39W 35S 42W MOV SE PROVOKES WINDS FORCE 8
FROM SECTOR N WITH GUST BETWEEN 35S-45S AND 30W-40W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
161400 UTC 1.SEA ICE LIMIT 5845S 02000W 5840S 02051W 5734S 02600W 5830S 03035W
5842S 03526W 6009S 03712W 6028S 04110W 5927S 04647W 5933S 04854W 6118S 05341W
6334S 06059W 6605S 06716W 2.ICEBERGS GREATER THAN 10NM A23A 5251S 04013W 32X24NM
A74A 5351S 02841W 27X17NM A77 5447S 04000W 27X4NM A76C 6017S 03846W 16X7NM B15AB
5807S 04527W 11X4NM A23G 5240S 03856W 11X3NM A23I 4951S 03907W 9X6NM 3.ICEBERGS
SMALLER THAN 10NM A23J 5125S 03832W 8X2NM ICEBERG1 4951S 03106W 7X1NM ICEBERG2
5102S 03546W 3X1NM ICEBERG3 5517S 04235W 9X2NM ICEBERG4 5110S 03452W 3X1NM
ICEBERG5 5043S 03614W 3X2NM ICEBERG6 5223S 03856W 7X3NM ICEBERG7 5124S 04013W
2X2NM ICEBERG8 5219S 03742W 3X1NM ICEBERG9 4954S 02425W 4X2NM ICEBERG10 5221S
03720W 2X1NM ICEBERG11 5156S 03812W 2X1NM ICEBERG12 4928S 03325W 3X1NM ICEBERG13
6048S 04530W 3X2NM ICEBERG14 5124S 03357W 2X1NM ICEBERG15 5048S 03821W 6X2NM
ICEBERG16 5149S 03835W 3X3NM ICEBERG17 5321S 03906W 7X6NM ICEBERG18 5245S 03801W
3X3NM ICEBERG19 5124S 03838W 2X1NM ICEBERG20 5155S 03914W 4X2NM ICEBERG21 4957S
02446W 2X1NM ICEBERG22 5252S 03846W 3X1NM ICEBERG23 5243S 03758W 3X1NM ICEBERG24
5243S 03917W 4X1NM ICEBERG25 5246S 03907W 2X1NM ICEBERG26 5300S 03928W 3X1NM
ICEBERG27 4946S 03902W 4X4NM ICEBERG28 5830S 04458W 3X1NM 4.ICEBERGS AREA A
4500S 02000W 6000S 02000W 4600S 04000W 6100S 04000W B 6200S 05400W 6100S 04000W
4800S 04000W 6000S 05400W C 5600S 05400W 6200S 05400W 6400S 06716W 6800S
06716W
LOW 981HPA 49S 28W MOV SE DPN EXTENDS CFNT AT 49S 28W 40S 39W 35S 42W MOV SE
ASOCIATED WITH WFNT AT 49S 28W 48S 24W 45S 20W
LOW 981HPA 49S 34W MOV SE WKN EXTENDS OFNT AT 51S 29W 50S 41W 46S 41W
LOW 960HPA 57S 72W MOV NE DPN EXP 50S 47W BY 18/1200 EXTENDS CFNT AT 57S 72W 51S
59W 47S 70W MOV NE EXP 50S 38W 40S 41W 35S 52W BY 18/1200 ASOCIATED WITH WFNT AT
57S 72W 56S 65W 53S 62W
RIDGE 57S 47W 45S 51W 39S 55W MOV E WKN
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-11-18
COASTAL AREAS:
INNER RIO DE LA PLATA: VRB 3 BACK SW VEER NW 4/6 WITH GUSTS VIS GOOD
OUTER RIO DE LA PLATA: SW 3 VEER NW 4/6 WITH GUSTS BACK W VIS GOOD
URUGUAY SOUTH EAST COASTS: SW 3 VEER NW 4/6 WITH GUSTS BACK W VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): W 4 VEER NW 4/6 WITH GUSTS VIS GOOD OCNL
MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): NW 6 WITH GUSTS BACK SECTOR S 4/3 VIS
GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): NW 7 WITH GUSTS BACK W 7/6 WITH GUSTS
VIS MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): W 9 WITH GUSTS PROB OF ISOL SH RAIN
SPELLS OF GOOD WEATHER VIS VERY POOR
SOUTH PATAGONIA COASTS(48S - 54S): W 9/8 WITH GUSTS PROB OF HVY SH RAIN SPELLS
OF GOOD WEATHER VIS VERY POOR
FIN DEL MUNDO COASTS(54S - 55S): W 9/8 WITH GUSTS BACK SECTOR S 6/5 WITH GUSTS
PROB OF HVY SH RAIN SPELLS OF GOOD WEATHER VIS VERY POOR TO MODERATE
ISLAS MALVINAS COASTS: N 6/7 WITH GUSTS BACK W 9/8 WITH GUSTS BACK S 7/6 WITH
GUSTS PROB OF HVY SH RAIN SPELLS OF GOOD WEATHER VIS VERY POOR OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 5/6 WITH GUSTS INCR 8 WITH GUSTS
BY 17/1800 PROB OF ISOL STORMS STARTING NIGTH VIS GOOD TO VERY POOR
W OF 30W - E OF 40W: NW 8/6 WITH GUSTS BACK SECTOR S 5/4 WITH GUSTS VEER SECTOR
W 4 PROB OF ISOL STORMS IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO
GOOD
REST OF THE AREA: S 6/5 VEER SECTOR W 4/7 WITH GUSTS PROB OF SH RAIN TOWARDS
THE END OF THE PERIOD VIS MODERATE TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR N 6/8 WITH GUSTS BACK
W 6/4 WITH GUSTS VEER NW 5 WITH GUSTS PROB OF ISOL RAIN STORMS IMPR VIS POOR
OCNL VERY POOR TO MODERATE
W OF 30W - N OF 45S: SECTOR N 8 WITH GUSTS BACK W 6 WITH GUSTS VEER NW 6/7 WITH
GUSTS PROB OF ISOL STORMS SPELLS OF GOOD WEATHER VIS VERY POOR OCNL POOR
REST OF THE AREA: SW 6/5 WITH GUSTS VEER SECTOR W 6 WITH GUSTS VEER N 6/7 WITH
GUSTS PROB OF HVY ISOL RAIN STORMS SPELLS OF GOOD WEATHER VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR W 6 WITH GUSTS VEER SECTOR N
8/9 WITH GUSTS BACK SECTOR W WITH GUSTS PROB OF HVY SH RAIN SPELLS OF GOOD
WEATHER VIS VERY POOR TO POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) S OF 55S: SECTOR W 6/5 WITH GUSTS LOW
PROB OF ISOL SNOW FALL VIS MODERATE OCNL POOR
E OF 30W - N OF 55S: SECTOR E 5 WITH GUSTS VEER SECTOR S 6 WITH GUSTS VEER
SECTOR W 5 PROB OF SH RAIN IMPR TOWARDS NIGTH VIS MODERATE OCNL POOR TO GOOD
REST OF THE AREA: SECTOR S 5/4 VEER SECTOR N 6 WITH GUSTS VEER SECTOR E 7 WITH
GUSTS PROB OF HVY SH RAIN STARTING EARLY MORNING VIS GOOD TO POOR OCNL VERY
POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50W - N OF 55S: VRB 4 VEER SECTOR N
5/7 WITH GUSTS VEER SECTOR E 8/9 WITH GUSTS PROB OF HVY RAIN SNOW FALL STARTING
EVENING VIS GOOD TO VERY POOR
E OF 50W - S OF 55S: SW 4 VEER SECTOR E 5/7 WITH GUSTS LOW PROB OF ISOL SNOW
FALL VIS GOOD TO POOR
W OF 50W - N OF 55S: SECTOR N 6/7 WITH GUSTS VEER SECTOR E 8 WITH GUSTS VEER
SECTOR S 7 PROB OF HVY FOG PATCHES RAIN SNOW FALL SPELLS OF GOOD WEATHER VIS
VERY POOR TO POOR
REST OF THE AREA: SECTOR E 6/7 WITH GUSTS VEER SECTOR S 6 WITH GUSTS PROB OF
ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS POOR OCNL MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR E 6 WITH GUSTS VEER SECTOR S 5 WITH
GUSTS PROB OF HVY RAIN SNOW FALL SPELLS OF GOOD WEATHER VIS POOR OCNL VERY
POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 17, NOVEMBER 2025.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1339/2025 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MOV E DEEPENING PROVOKES WINDS FORCE 9 FROM SECTOR E IN 60S-62S 60W-70W UNTIL 18/0300
1340/2025 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS MOV E DEEPENING PROVOKES WINDS FORCE 9 FROM SECTOR S IN 61S-63S 50W-60W
1341/2025 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MOV E DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR S IN 64S-66S 55W-60W FROM 17/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 960HPA 62S 88W MOV E WKN
RIDGE 60S 55W 50S 60W 54S 55W 56S 60W MOV NE WKN
161400 UTC 1.LIMITE DE HIELO MARINO 5845S 02000W 5840S 02051W 5734S 02600W 5830S 03035W 5842S 03526W 6009S 03712W 6028S 04110W 5927S 04647W 5933S 04854W 6118S 05341W 6334S 06059W 6605S 06716W 2.TEMPANOS MAYORES A 10MN A23A 5251S 04013W 32X24MN A74A 5351S 02841W 27X17MN A77 5447S 04000W 27X4MN A76C 6017S 03846W 16X7MN B15AB 5807S 04527W 11X4MN A23G 5240S 03856W 11X3MN A23I 4951S 03907W 9X6MN 3.TEMPANOS MENORES A 10MN A23J 5125S 03832W 8X2MN TEMPANO1 4951S 03106W 7X1MN TEMPANO2 5102S 03546W 3X1MN TEMPANO3 5517S 04235W 9X2MN TEMPANO4 5110S 03452W 3X1MN TEMPANO5 5043S 03614W 3X2MN TEMPANO6 5223S 03856W 7X3MN TEMPANO7 5124S 04013W 2X2MN TEMPANO8 5219S 03742W 3X1MN TEMPANO9 4954S 02425W 4X2MN TEMPANO10 5221S 03720W 2X1MN TEMPANO11 5156S 03812W 2X1MN TEMPANO12 4928S 03325W 3X1MN TEMPANO13 6048S 04530W 3X2MN TEMPANO14 5124S 03357W 2X1MN TEMPANO15 5048S 03821W 6X2MN TEMPANO16 5149S 03835W 3X3MN TEMPANO17 5321S 03906W 7X6MN TEMPANO18 5245S 03801W 3X3MN TEMPANO19 5124S 03838W 2X1MN TEMPANO20 5155S 03914W 4X2MN TEMPANO21 4957S 02446W 2X1MN TEMPANO22 5252S 03846W 3X1MN TEMPANO23 5243S 03758W 3X1MN TEMPANO24 5243S 03917W 4X1MN TEMPANO25 5246S 03907W 2X1MN TEMPANO26 5300S 03928W 3X1MN TEMPANO27 4946S 03902W 4X4MN TEMPANO28 5830S 04458W 3X1MN
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2025-11-18
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR E 9 DECR 5 BY 18/0300 PROB OF MIST VIS GOOD OCNL MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 3/4 VEER SECTOR S 6 BY 18/0000 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR E 3/5 PROB OF MIST VIS GOOD OCNL MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 8 BY 17/1200 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL POOR
GERLACHE STRAIT : SECTOR E 5/6 DECR 3 BY 18/0000 VIS GOOD
MARGARITA BAY : SECTOR E 3/5 VIS GOOD
EREBUS Y TERROR GULF : SECTOR S 4/5 8 BY 17/1800 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL WORSENING TOWARDS MORNING VIS MODERATE TO POOR OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): NE 3/4 VEER SECTOR E 5 BY 17/1200 PROB OF MIST PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 3/5 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL 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 S 3/4 PROB OF MIST FOG PATCHES PROB OFISOL SNOW FALL VIS GOOD TO MODERATE OCNL VERY POOR=