1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 20, OCTOBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1237/2026 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS MOV NE WEAKENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH GUST IN 61S-64S 60W-50W FROM 20/2100 UNTIL 21/2100
PART 2 GENERAL SYNOPSIS AT 21:00UTC
RIDGE 61S 80W 63S 77W 66S 73W MOV E NC
TROUGH 60S 70W 62S 66W 63S 61W MOV E NC
LOW 981HPA 72S 51W MOV E DPN
RIDGE 60S 33W 64S 29W 68S 27W MOV E NC
191400 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 03816W 28X25NM D33B 5700S 04420W 21X12NM D35 6010S 04357W 15X6 NM A83 5957S 04930W 12X7NM A85 5910S 04745W 10X3NM ICEBERG1 5816S 04758W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5645S 03851W 9X6NM D33C 6146S 05437W 9X5NM ICEBERG2 5232S 04137W 5X3NM ICEBERG3 5744S 04618W 5X3NM ICEBERG4 5501S 04404W 4X3NM ICEBERG5 5643S 04409W 2X1NM ICEBERG6 5648S 04750W 3X2NM ICEBERG7 5924S 04854W 2X1NM ICEBERG8 5907S 04414W 6X2NM ICEBERG9 5740S 04626W 2X1NM ICEBERG10 6004S 04347W 4X1NM ICEBERG11 5949S 04256W 4X1NM ICEBERG12 6140S 05409W 2X1NM ICEBERG13 5656S 04445W 2X1NM ICEBERG14 5520S 04344W 2X1NM 4.ICEBERGS AREA A5512S 02000W 4956S 02000W 4952S 04500W 6050S 04500W B6050S 04500W 5345S 04500W 5908S 06716W 6622S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-10-21
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 4/5 INCR SW 5/6 WITH GUSTS BY 20/0900 AFTERWARDS SECTOR W 5/6 BY 20/1800 PROB OF ISOL RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER STARTING EARLY MORNING VIS MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: NW 4/5 INCR SECTOR W 6/7 WITH GUSTS BY 20/1500 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE IMPR DURING THE EARLY MORNING VIS MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 3/4 INCR SECTOR W 5/6 WITH GUSTS BY 20/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EVENING VIS MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: NW 4/5 INCR SECTOR W 5/6 WITH GUSTS BY 20/1200 AFTERWARDS SECTOR W 7/8 WITH GUSTS BY 20/2100 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE IMPR STARTING EVENING VIS MODERATE OCNL GOOD
GERLACHE STRAIT : SW 3/4 VEER SECTOR W 4/5 BY 20/1200 PROB OF MIST PROB OFMOD SNOW FALL WORSENING STARTING EARLY MORNING VIS MODERATE OCNL POOR
MARGARITA BAY : SECTOR W 4/5 INCR SECTOR N 5/7 WITH GUSTS BY 20/1500 AFTERWARDS SECTOR W 6/5 WITH GUSTS BY 20/2100 PROB OF FOG AND MIST IN PATCHES PROB OFMOD SNOW FALL WORSENING STARTING NOON VIS MODERATE TO POOR
EREBUS Y TERROR GULF : SECTOR W 4/3 INCR SW 4/5 BY 20/1200 AFTERWARDS SECTOR N 4/5 BY 20/2100 PROB OF ISOL RAIN AND SNOW MIXTURE IMPR STARTING EARLY MORNING VIS GOOD OCNL MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA W OF 80W: NW 5/6 INCR NW 6/7 WITH GUSTS BY 20/0900 AFTERWARDS SECTOR W 6/5 WITH GUSTS BY 20/1800 PROB OF MIST PROB OFMOD RAIN AND SNOW MIXTURE IMPR STARTING NOON VIS MODERATE TO POOR
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 4/5 INCR NW 6/7 WITH GUSTS BY 20/1200 AFTERWARDS SECTOR W 6/5 WITH GUSTS BY 20/1800 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE WORSENING STARTING NOON VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR N 4/5 INCR SECTOR N 6/7 WITH GUSTS BY 20/0900 AFTERWARDS SECTOR W 6/7 WITH GUSTS BY 20/1800 PROB OF FOG AND MIST IN PATCHES PROB OFMOD SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR
NORTHERN WEDDELL SEA W OF 35W: NW 4/3 INCR SECTOR W 5/6 WITH GUSTS BY 20/1200 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR GRADUALLY TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 3/4 INCR SECTOR W 5/6 WITH GUSTS BY 20/1200 PROB OF MIST PROB OFISOL RAIN AND SNOW MIXTURE WORSENING STARTING EARLY MORNING VIS MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR N 4/5 VEER SECTOR W 4/5 BY 20/1500 PROB OF MIST PROB OFMOD SNOW FALL WORSENING STARTING EARLY MORNING VIS MODERATE TO POOR=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-10-20, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 456: LOW 996HPA AT 39S 30W WEAKENING EXPECTED 35S 45W 25S 35W BY 20/2100
PROVOKES WINDS FORCE 8 FROM SECTOR S WITH GUST
PART 2 GENERAL SYNOPSIS AT 21:00UTC
191400 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 03816W 28X25NM
D33B 5700S 04420W 21X12NM D35 6010S 04357W 15X6 NM A83 5957S 04930W 12X7NM A85
5910S 04745W 10X3NM ICEBERG1 5816S 04758W 10X3NM 3.ICEBERGS SMALLER THAN 10NM
D32 5645S 03851W 9X6NM D33C 6146S 05437W 9X5NM ICEBERG2 5232S 04137W 5X3NM
ICEBERG3 5744S 04618W 5X3NM ICEBERG4 5501S 04404W 4X3NM ICEBERG5 5643S 04409W
2X1NM ICEBERG6 5648S 04750W 3X2NM ICEBERG7 5924S 04854W 2X1NM ICEBERG8 5907S
04414W 6X2NM ICEBERG9 5740S 04626W 2X1NM ICEBERG10 6004S 04347W 4X1NM ICEBERG11
5949S 04256W 4X1NM ICEBERG12 6140S 05409W 2X1NM ICEBERG13 5656S 04445W 2X1NM
ICEBERG14 5520S 04344W 2X1NM 4.ICEBERGS AREA A5512S 02000W 4956S 02000W 4952S
04500W 6050S 04500W B6050S 04500W 5345S 04500W 5908S 06716W 6622S 06716W
LOW 996HPA 39S 30W WKN EXTENDS OFNT AT
HIGH 1023HPA 42S 54W MOV NE INTSF EXP 40S 50W BY 21/0000 EXTENDS RIDGE AT 42S
54W 49S 46W 48S 36W
LOW 1002HPA 37S 36W MOV NE WKN
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-10-21
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 4 VEER SE 4 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR E 3/4 INCR 5 WITH GUSTS VIS GOOD OCNL MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR S 3 BACK SECTOR E 3 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR E 3 BACK NE 4 WITH GUSTS PROB OF
FOG MIST DURING THE EARLY MORNING VIS MODERATE OCNL POOR TO GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): NE 5 WITH GUSTS VIS GOOD OCNL
MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 6/5 WITH GUSTS PROB OF SH RAIN
STARTING EARLY MORNING VIS MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 6 GUST WITH 8 INTENSITY VEER
VRB 4 PROB OF SH RAIN STARTING EARLY MORNING VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 4 BACK SE 5/6 WITH GUSTS BY
20/1200 PROB OF SH RAIN TOWARDS THE END OF THE PERIOD IMPR VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 5 WITH GUSTS DECR 4 BY 20/2100 PROB
OF DRIZZLE RAIN STARTING EARLY MORNING IMPR VIS MODERATE
ISLAS MALVINAS COASTS: SECTOR N 5 WITH GUSTS BACK SECTOR S 4/5 WITH GUSTS BY
20/1500 PROB OF DRIZZLE RAIN TOWARDS THE END OF THE PERIOD IMPR VIS MODERATE
OCNL POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 5 WITH GUSTS BACK VRB 5 WITH
GUSTS BY 20/2100 PROB OF RAIN STORMS VIS POOR OCNL MODERATE
E OF 40W: SECTOR S 7/8 WITH GUSTS DECR 6 GUST WITH 8 INTENSITY BY 20/2100 PROB
OF SH RAIN VIS POOR OCNL VERY POOR
E OF 50W: SECTOR S 5 WITH GUSTS DECR 4 BY 20/2100 PROB OF DRIZZLE RAIN TOWARDS
THE END OF THE PERIOD IMPR VIS POOR TO MODERATE
REST OF THE AREA: SECTOR S 3 BACK SECTOR E 3 BY 20/1500 VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) S OF 45S: SECTOR S 4 LOW PROB OF ISOL
DRIZZLE VIS GOOD OCNL MODERATE
E OF 25 - N OF 45S: SECTOR E 6 WITH GUSTS VEER SE 6/5 WITH GUSTS BY 20/1500
PROB OF SH RAIN VIS MODERATE OCNL POOR
E OF 35 - N OF 45S: SECTOR S 8 WITH GUSTS DECR 7/6 GUST WITH 8 INTENSITY PROB
OF HVY RAIN VIS POOR
REST OF THE AREA: SECTOR S 6/5 GUST WITH 8 INTENSITY PROB OF DRIZZLE RAIN
SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 4 DECR 3 LOW PROB
OF DRIZZLE VIS GOOD OCNL MODERATE
REST OF THE AREA: VRB 3 VEER SECTOR N 3/4 WITH GUSTS BY 20/1200 VIS GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SW 4 VEER SECTOR W 4 BY
20/1800 VIS GOOD
W OF 30 - N OF 55S: SECTOR W 4/3 INCR 5 WITH GUSTS BY 20/2100 VIS GOOD
REST OF THE AREA: SECTOR W 4 INCR 5/6 WITH GUSTS BY 20/1800 PROB OF RAIN AND
SNOW MIXTURE STARTING EVENING VIS GOOD TO MODERATE
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR W 3 INCR 4/5
WITH GUSTS WORSENING WITH PROB OF DRIZZLE RAIN TOWARDS THE END OF THE PERIOD VIS
GOOD TO MODERATE
W OF 50 - N OF 55S: NW 4/5 WITH GUSTS BACK SECTOR S 4 WITH GUSTS BY 20/1800
WORSENING WITH PROB OF SH RAIN STARTING EARLY MORNING VIS MODERATE
REST OF THE AREA: SECTOR W 5 BACK SW 5 WITH GUSTS BY 20/1200 VEER W 6 GUST WITH
8 INTENSITY BY 20/2100 PROB OF RAIN AND SNOW MIXTURE TOWARDS THE END OF THE
PERIOD IMPR VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SW 4/5 WITH GUSTS VEER W 6 GUST WITH 8
INTENSITY BY 20/1800 LOW PROB OF ISOL SNOW FALL VIS MODERATE
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