1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 18, OCTOBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 09:00UTC
TROUGH 65S 88W 63S 85W 61S 81W MOV E NC
RIDGE 61S 58W 63S 62W 65S 65W MOV E NC
LOW 988HPA 70S 39W MOV NE DPN
TROUGH 67S 38W 66S 38W 63S 40W MOV E NC
171400 UTC 1.SEA ICE LIMIT 5351S 02000W 5300S 02618W 5354S 03218W 5544S 03758W 5653S 04316W 5808S 04814W 6207S 05247W 6248S 05654W 5936S 06033W 6028S 06336W 6156S 06559W 6212S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5450S 03821W 28X25NM D33B 5700S 04505W 21X12NM D35 6010S 04346W 15X6 NM A83 5959S 04929W 12X7NM A85 5849S 04817W 10X3NM ICEBERG1 5828S 04746W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5634S 03848W 9X6NM D33C 6144S 05426W 9X5NM ICEBERG2 5244S 04139W 5X3NM ICEBERG3 5738S 04630W 5X3NM ICEBERG4 5531S 04343W 4X3NM ICEBERG5 5645S 04445W 2X1NM ICEBERG6 5714S 04805W 3X2NM ICEBERG7 5911S 04834W 2X1NM ICEBERG8 5910S 04411W 6X2NM ICEBERG9 5741S 04629W 2X1NM ICEBERG10 6001S 04407W 4X1NM ICEBERG11 5858S 06336W 2X1NM ICEBERG12 5953S 04250W 4X1NM ICEBERG13 6141S 05409W 2X1NM ICEBERG14 5658S 04457W 2X1NM ICEBERG15 5526S 04354W 2X1NM 4.ICEBERGS AREA A5512S 02000W 4956S 02000W 4952S 04500W 6050S 04500W B6050S 04500W 5345S 04500W 5908S 06716W 6622S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-10-19
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: NE 3/4 BACK NW 3/4 BY 19/0300 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE WORSENING TOWARDS THE END OF THE PERIOD VIS MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 4/5 VEER SECTOR N 5/6 WITH GUSTS BY 19/0300 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE WORSENING SLOWLY TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SECTOR N 3/4 VEER NE 5/6 WITH GUSTS BY 18/2100 AFTERWARDS NW 3/4 BY 19/0900 PROB OF MIST PROB OF RAIN AND SNOW MIXTURE WORSENING STARTING THE MIDDLE OF THE PERIOD VIS MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 5/6 WITH GUSTS VEER NW 4/5 BY 19/0300 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE WORSENING DURING THE EARLY MORNING VIS GOOD OCNL MODERATE
GERLACHE STRAIT : NE 4/5 INCR NE 5/6 WITH GUSTS BY 19/0000 AFTERWARDS SECTOR W 3/4 BY 19/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR GRADUALLY TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR
MARGARITA BAY : NE 4/5 INCR NE 6/5 WITH GUSTS BY 19/0000 AFTERWARDS NW 4/5 BY 19/0900 PROB OF FOG AND MIST IN PATCHES PROB OFMOD SNOW FALL IMPR GRADUALLY TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR
EREBUS Y TERROR GULF : SECTOR N 3/4 INCR SECTOR N 5/6 WITH GUSTS BY 19/0300 PROB OF MIST IMPR DURING THE MORNING VIS MODERATE TO GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA W OF 80W: NE 5/6 WITH GUSTS BACK SECTOR W 4/5 BY 18/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EARLY MORNING VIS MODERATE OCNL POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NE 4/5 BACK SECTOR W 4/3 BY 19/0300 AFTERWARDS SECTOR N 3/4 BY 19/0900 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NE 6/7 WITH GUSTS BACK SECTOR W 4/5 BY 19/0000 PROB OF MIST PROB OFMOD SNOW FALL IMPR GRADUALLY TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR
NORTHERN WEDDELL SEA W OF 35W: SECTOR W 5/6 WITH GUSTS BACK SW 4/5 BY 19/0000 AFTERWARDS SECTOR N 3 BY 19/0900 PROB OF MIST IMPR DURING THE MORNING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 3/4 VEER SECTOR N 3/4 BY 19/0000 AFTERWARDS SECTOR S 3/4 BY 19/0900 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA S OF - N OF 72S: SECTOR N 3/4 VEER SECTOR S 4/5 BY 18/2100 AFTERWARDS SECTOR W 3/4 BY 19/0900 PROB OF INTERMITTENT SNOW FALL IMPR STARTING THE MIDDLE OF THE PERIOD VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA REST OF THE AREA: SECTOR S 3/4 VEER SECTOR W 3/4 BY 19/0300 VIS GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-10-18, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 456: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM E WITH GUST
BETWEEN 35S-40S AND 40W-20W UNTIL 18/1800
WARNING 455: LOW 993HPA AT 35S 46W MOV SE NOT CHANGE EXPECTED 37S 35W BY 18/2100
PROVOKES WINDS FORCE 8 FROM SECTOR S WITH GUST BETWEEN 35S-40S AND 40W-55W UNTIL
18/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
181400 UTC 1.SEA ICE LIMIT 5351S 02000W 5300S 02618W 5354S 03218W 5544S 03758W
5653S 04316W 5808S 04814W 6207S 05247W 6248S 05654W 5936S 06033W 6028S 06336W
6156S 06559W 6212S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5450S 03817W 28X25NM
D33B 5700S 04449W 21X12NM D35 6011S 04349W 15X6 NM A83 5957S 04931W 12X7NM A85
5903S 04757W 10X3NM ICEBERG1 5819S 04751W 10X3NM 3.ICEBERGS SMALLER THAN 10NM
D32 5640S 03846W 9X6NM D33C 6144S 05432W 9X5NM ICEBERG2 5237S 04139W 5X3NM
ICEBERG3 5740S 04620W 5X3NM ICEBERG4 5511S 04404W 4X3NM ICEBERG5 5644S 04433W
2X1NM ICEBERG6 5703S 04804W 3X2NM ICEBERG7 5918S 04842W 2X1NM ICEBERG8 5909S
04417W 6X2NM ICEBERG9 5743S 04619W 2X1NM ICEBERG10 6001S 04401W 4X1NM ICEBERG11
5851S 06225W 2X1NM ICEBERG12 5951S 04252W 4X1NM ICEBERG13 6136S 05413W 2X1NM
ICEBERG14 5656S 04445W 2X1NM ICEBERG15 5520S 04344W 2X1NM 4.ICEBERGS AREA A5512S
02000W 4956S 02000W 4952S 04500W 6050S 04500W B6050S 04500W 5345S 04500W 5908S
06716W 6622S 06716W
LOW 993HPA 36S 40W MOV SE DPN EXP 40S 30W BY 19/1200 MOV SE
HIGH 1029HPA 45S 55W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-10-19
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 3 BACK SECTOR E /3 MIST DISSIPATING PROB OF MIST
FOG PATCHES STARTING EARLY MORNING VIS GOOD OCNL POOR
OUTER RIO DE LA PLATA: SECTOR S 3 BACK SECTOR E /3 MIST DISSIPATING PROB OF MIST
FOG PATCHES STARTING EARLY MORNING VIS GOOD OCNL POOR
URUGUAY SOUTH EAST COASTS: SECTOR S 5/4 WITH GUSTS PROB OF ISOL RAIN PROB OF
MIST FOG PATCHES STARTING EARLY MORNING VIS GOOD OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 4 BACK SECTOR E MIST PROB OF
MIST FOG PATCHES STARTING EARLY MORNING VIS GOOD OCNL POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR E 3 BACK NE 4/5 MIST FOG
PATCHES DISSIPATING VIS MODERATE OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5/6 WITH GUSTS PROB OF MIST
FOG PATCHES VIS GOOD OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5/6 WITH GUSTS PROB OF MIST FOG
PATCHES VIS GOOD OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 5/4 PROB OF MIST FOG PATCHES VIS
MODERATE OCNL POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 5/4 PROB OF MIST FOG PATCHES VIS
MODERATE OCNL POOR.
ISLAS MALVINAS COASTS: SECTOR N 6/5 WITH GUSTS MIST FOG PATCHES VIS POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR E 8/7 WITH GUSTS PROB OF HVY
SH VIS POOR
E OF 55 - W OF 40W: SECTOR S 8/6 WITH GUSTS PROB OF SH VIS POOR
REST OF THE AREA: SECTOR S 6/4 WITH GUSTS PROB OF MIST FOG PATCHES DRIZZLE VIS
MODERATE OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: SECTOR E 7 WITH GUSTS PROB
OF HVY SH RAIN VIS POOR
SE OF THE REGION: SW 7/6 WITH GUSTS PROB OF SH VIS POOR
REST OF THE AREA: SECTOR S 5/4 WITH GUSTS PROB OF MIST FOG PATCHES DRIZZLE VIS
POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 6/4 WITH GUSTS PROB
OF MIST FOG PATCHES RAIN VIS MODERATE OCNL POOR
REST OF THE AREA: VRB 4 PROB OF MIST FOG PATCHES DRIZZLE VIS POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SW 7/6 WITH GUSTS PROB OF RAIN AND SNOW
MIXTURE VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR W 4 VEER NW 4/5 WITH GUSTS PROB
OF MIST FOG PATCHES DRIZZLE VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR N 5/5 WITH GUSTS BACK SECTOR W /4
WITH GUSTS PROB OF RAIN AND SNOW MIXTURE VIS POOR
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