1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 31, OCTOBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1263/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV E WEAKENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 62S-66S 45W-35W UNTIL 01/0300
PART 2 GENERAL SYNOPSIS AT 09:00UTC
RIDGE 63S 69W 62S 65W 60S 61W MOV E NC
LOW 979HPA 69S 82W MOV NE WKN
LOW 955HPA 68S 32W MOV NE WKN
TROUGH 65S 31W 64S 33W 62S 35W MOV E NC
301400 UTC 1.SEA ICE LIMIT 5315S 02000W 5249S 02618W 5233S 03218W 5553S 03758W 5653S 04316W 5953S 04814W 6220S 05247W6231S 05654W 6617S 06033W 6313S 06337W 6429S 06558W 6507S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5534S 03645W 28X25NM D33B 5551S 04216W 21X12NM D35 6007S 04421W 15X6 NM A83 5926S 04951W 12X7NM A85 5653S 04705W 10X3NM ICEBERG1 5628S 04640W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5634S 03912W 9X6NM D33C 6200S 05403W 9X5NM ICEBERG2 5046S 03947W 5X3NM ICEBERG3 5720S 04655W 5X3NM ICEBERG4 5331S 04321W 4X1NM ICEBERG5 5542S 04205W 2X1NM ICEBERG6 5907S 04907W 2X1NM ICEBERG7 5817S 04339W 2X1NM ICEBERG8 5728S 04434W 6X2NM ICEBERG9 5957S 04344W 2X1NM ICEBERG10 5955S 04200W 4X1NM ICEBERG11 6019S 05220W 4X1NM ICEBERG12 5425S 04320W 2X1NM ICEBERG13 6209S 06150W 4X1NM 4.ICEBERGS AREA A5417S 02000W 4900S 02000W 4800S 04000W 5730S 04000W B5730S 04000W 4800S 04000W 5800S 06716W 6530S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-11-1
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR N 3/4 VEER SECTOR E 4/5 BY 31/2100 AFTERWARDS SECTOR S 4/5 BY 1/0900 PROB OF INTERMITTENT RAIN AND SNOW MIXTURE WORSENING DURING THE MORNING VIS GOOD TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 6/7 WITH GUSTS BACK SECTOR N 4/5 BY 1/0300 PROB OF INTERMITTENT RAIN AND SNOW MIXTURE WORSENING STARTING EVENING VIS GOOD TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 3/4 BACK SECTOR E 4/5 BY 31/2100 AFTERWARDS SECTOR S 5/6 BY 1/0900 PROB OF MIST PROB OFMOD SNOW FALL WORSENING STARTING NOON VIS MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 6/7 WITH GUSTS DECR SECTOR W 4/5 BY 31/2100 AFTERWARDS SECTOR N 4/5 BY 1/0900 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE WORSENING STARTING EVENING VIS MODERATE OCNL POOR
GERLACHE STRAIT : SECTOR W 4/3 DECR NW 3 BY 1/0900 PROB OF MIST DISSIPATING DURING THE MORNING VIS MODERATE TO GOOD
MARGARITA BAY : SECTOR W 4/3 VEER NW 4/3 BY 31/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING THE MIDDLE OF THE PERIOD VIS MODERATE TO GOOD
EREBUS Y TERROR GULF : SW 5/6 WITH GUSTS VEER SECTOR W 4/3 BY 31/2100 AFTERWARDS NE 3/4 BY 1/0600 PROB OF ISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 63S: SE 5/6 WITH GUSTS VEER SECTOR S 5/4 BY 1/0000 AFTERWARDS SECTOR W 4/5 BY 1/0900 PROB OF MIST PROB OFINTERMITTENT RAIN AND SNOW MIXTURE IMPR DURING THE EARLY MORNING VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 3/4 INCR SECTOR W 4/5 BY 1/0300 AFTERWARDS SECTOR W 5/6 BY 1/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING THE MIDDLE OF THE PERIOD VIS MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 5/6 WITH GUSTS DECR SECTOR S 4/5 BY 1/0300 AFTERWARDS SE 4/3 BY 1/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR GRADUALLY TOWARDS THE END OF THE PERIOD VIS MODERATE OCNL GOOD
NORTHERN WEDDELL SEA W OF 35W: SECTOR W 8/7 WITH GUSTS DECR SW 6/5 WITH GUSTS BY 1/0000 AFTERWARDS NE 4/3 BY 1/0900 PROB OF ISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE MORNING VIS MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 8/7 BACK SW 6/5 WITH GUSTS BY 1/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR GRADUALLY TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 4/5 VEER SW 4/3 BY 1/0300 PROB OF MIST DISSIPATING DURING THE MORNING VIS MODERATE TO GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-10-31, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 462: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 WITH GUST BETWEEN
50S-60S 20W-30W UNTIL 31/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1022HPA 41S 44W NC
CFNT AT 48S 47W 52S 36W 56S 26W 60S 21W MOV E WKN
301400 UTC 1.SEA ICE LIMIT 5315S 02000W 5249S 02618W 5233S 03218W 5553S 03758W
5653S 04316W 5953S 04814W 6220S 05247W6231S 05654W 6617S 06033W 6313S 06337W
6429S 06558W 6507S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5534S 03645W 28X25NM
D33B 5551S 04216W 21X12NM D35 6007S 04421W 15X6 NM A83 5926S 04951W 12X7NM A85
5653S 04705W 10X3NM ICEBERG1 5628S 04640W 10X3NM 3.ICEBERGS SMALLER THAN 10NM
D32 5634S 03912W 9X6NM D33C 6200S 05403W 9X5NM ICEBERG2 5046S 03947W 5X3NM
ICEBERG3 5720S 04655W 5X3NM ICEBERG4 5331S 04321W 4X1NM ICEBERG5 5542S 04205W
2X1NM ICEBERG6 5907S 04907W 2X1NM ICEBERG7 5817S 04339W 2X1NM ICEBERG8 5728S
04434W 6X2NM ICEBERG9 5957S 04344W 2X1NM ICEBERG10 5955S 04200W 4X1NM ICEBERG11
6019S 05220W 4X1NM ICEBERG12 5425S 04320W 2X1NM ICEBERG13 6209S 06150W 4X1NM
4.ICEBERGS AREA A5417S 02000W 4900S 02000W 4800S 04000W 5730S 04000W B5730S
04000W 4800S 04000W 5800S 06716W 6530S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-11-1
COASTAL AREAS:
INNER RIO DE LA PLATA: NE 3 LOW PROB OF ISOL PRECIPITATIONS VIS GOOD
OUTER RIO DE LA PLATA: SE 3/4 LOW PROB OF ISOL PRECIPITATIONS VIS GOOD
URUGUAY SOUTH EAST COASTS: NE 3/4 LOW PROB OF ISOL PRECIPITATIONS VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): NE 4/5 WITH GUSTS LOW PROB OF ISOL
PRECIPITATIONS VIS GOOD OCNL MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): NE 4/5 WITH GUSTS LOW PROB OF ISOL
PRECIPITATIONS VIS GOOD OCNL MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 5 WITH GUSTS PROB OF SH RAIN
STARTING EVENING VIS GOOD OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 5/6 WITH GUSTS VIS GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 5/6 WITH GUSTS VIS GOOD
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 4 PROB OF ISOL PRECIPITATIONS SPELLS
OF GOOD WEATHER VIS GOOD TO MODERATE
ISLAS MALVINAS COASTS: SECTOR N 6 WITH GUSTS LOW PROB OF ISOL PRECIPITATIONS VIS
GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR S 6/4 WITH GUSTS PROB OF
ISOL RAIN STORMS STARTING NIGTH IMPR VIS POOR TO MODERATE OCNL GOOD
REST OF THE AREA: SECTOR E 4 VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) S OF 45S: SECTOR W 6/4 WITH GUSTS VIS
GOOD
REST OF THE AREA: SECTOR S 4 PROB OF ISOL PRECIPITATIONS STARTING NIGTH IMPR
VIS MODERATE TO GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SECTOR N 4/6 WITH GUSTS LOW PROB OF
ISOL PRECIPITATIONS DURING THE NIGTH VIS GOOD TO MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SECTOR W 9 WITH GUSTS DECR
SECTOR W /6 WITH GUSTS BY 31/1800 PRECIPITATIONS STARTING NIGTH IMPR VIS POOR TO
MODERATE OCNL GOOD
REST OF THE AREA: SECTOR W 6/5 WITH GUSTS VIS GOOD
SOUTH WEST AREA (50S- 60S AND 40W- 60W): NW 6 WITH GUSTS PROB OF ISOL
PRECIPITATIONS VIS GOOD TO MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): NW 5 WITH GUSTS PROB OF ISOL PRECIPITATIONS
SPELLS OF GOOD WEATHER VIS GOOD TO MODERATE
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