1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-29, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 443: LOW 1005HPA AT 34S 58W MOV SE DEEPENING EXPECTED 40S 50W BY 30/1200
WILL PROVOKE WINDS FORCE 8 FROM SECTOR E WITH GUST BETWEEN 40S-45S 40W-50W FROM
30/0600
WARNING 442: LOW 1005HPA AT 34S 58W MOV SE DEEPENING EXPECTED 40S 50W BY 30/1200
WILL PROVOKE WINDS FORCE 8 FROM SECTOR S WITH GUST BETWEEN 35S-40S 50W-60W FROM
30/0000
WARNING 441: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 WITH GUST BETWEEN
35S-40S AND 40W-55W FROM 29/1800
WARNING 440: STRONG BARIC GRADIENT WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH
GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W) BETWEEN 55S-60S AND 40W-50W FROM
29/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 1005HPA 34S 58W MOV SE DPN EXP 40S 50W BY 30/1200
HIGH 1028HPA 44S 45W MOV NE WKN EXP 35S 29W BY 30/1200
CFNT AT 51S 21W 49S 33W MOV E NC
281400 UTC 1.SEA ICE LIMIT 5532S 02000W 5355S 02618W 5318S 03218W 5545S 03757W
5746S 04317W 5903S 04813W 6030S 05247W 6231S 05654W 5926S 06032W 5905S 06337W
6014S 06559W 6059S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5607S 04314W 28X25NM
D33B 5854S 04642W 21X12NM A76C 5456S 02543W 17X6NM A85 6004S 05130W 10X3NM
ICEBERG1 6014S 05141W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5650S 03820W 9X6NM
D33C 6149S 05351W 9X5NM ICEBERG2 5613S 04352W 5X3NM ICEBERG3 5904S 04739W 5X3NM
ICEBERG4 5643S 04753W 4X3NM ICEBERG5 5716S 04602W 3X1NM ICEBERG6 6014S 05159W
3X2NM 4.ICEBERGS AREA A5600S 02000W 5000S 02000W 5000S 03500W 5610S 03500W
B5610S 03500W 5000S 03500W 5500S 05000W 5940S 05000W C5940S 05000W 5700S 05000W
5800S 06716W 6120S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-30
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR S 4/5 WITH GUSTS DECR 4 PROB OF ISOL RAIN SH
DURING THE MORNING MIST DURING THE MORNING VIS MODERATE OCNL GOOD
OUTER RIO DE LA PLATA: SECTOR S 5/7 WITH GUSTS DECR 5 BY 30/0900 PROB OF RAIN
STORMS DURING THE EVENING IMPR VIS MODERATE OCNL POOR
URUGUAY SOUTH EAST COASTS: SECTOR N 4/5 WITH GUSTS BACK SECTOR S 6 WITH GUSTS
PROB OF RAIN STORMS NXT PROB OF SH STARTING NIGTH VIS MODERATE OCNL POOR
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 5/7 WITH GUSTS DECR 6 WITH GUSTS
BY 30/0900 PROB OF HVY RAIN NXT PROB OF SH DURING THE EVENING VIS POOR OCNL
MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 4/5 WITH GUSTS PROB OF ISOL
RAIN SH SPELLS OF GOOD WEATHER VIS MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 5/6 WITH GUSTS PROB OF
INTERMITTENT DRIZZLE MIST VIS MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR E 5 WITH GUSTS PROB OF
INTERMITTENT DRIZZLE MIST VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 5 WITH GUSTS PROB OF INTERMITTENT
DRIZZLE MIST VIS MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 4 PROB OF MIST FOG PATCHES PROB
OFINTERMITTENT DRIZZLE VIS MODERATE
ISLAS MALVINAS COASTS: VRB 4 VEER SECTOR S PROB OF MIST FOG PATCHES VIS
MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 55 - W OF 40W: SECTOR N 7/8 WITH GUSTS
BACK SECTOR S PROB OF SH RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL MODERATE
W OF 55W: SECTOR N 7 WITH GUSTS BACK SECTOR E 8 WITH GUSTS PROB OF SH RAIN
STARTING EARLY MORNING IMPR VIS POOR OCNL MODERATE
REST OF THE AREA: SECTOR S 6/5 WITH GUSTS BACK VRB PROB OF ISOL RAIN SPELLS OF
GOOD WEATHER VIS MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR S 5/6 WITH GUSTS PROB OF ISOL
RAIN AND SNOW MIXTURE IMPR STARTING NIGTH VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR E 6/8 WITH
GUSTS PROB OF HVY RAIN STARTING EVENING VIS MODERATE OCNL POOR
W OF 50 - N OF 45S: SECTOR S 4/5 WITH GUSTS PROB OF ISOL RAIN SH SPELLS OF GOOD
WEATHER VIS MODERATE
REST OF THE AREA: VRB 5 VEER SECTOR E 6 WITH GUSTS LOW PROB OF ISOL RAIN VIS
MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR S 6 WITH GUSTS VEER SECTOR W 7/8
WITH GUSTS PROB OF ISOL INTERMITTENT SNOW FALL VIS MODERATE TO POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55S: SECTOR W 8/7 WITH GUSTS BACK
SECTOR S 5 WITH GUSTS PROB OF INTERMITTENT DRIZZLE VIS POOR TO MODERATE
REST OF THE AREA: SECTOR S 5 WITH GUSTS PROB OF MIST INTERMITTENT DRIZZLE VIS
MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 5 WITH GUSTS VEER VRB PROB OF ISOL
RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 29, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1194/2026 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 WITH GUST IN 65S-69S 90W-70W FROM 28/1500 UNTIL 29/0900
PART 2 GENERAL SYNOPSIS AT 21:00UTC
RIDGE 63S 43W 65S 40W 68S 37W MOV E WKN
TROUGH 71S 59W 69S 55W 66S 52W MOV E WKN
TROUGH 67S 79W 70S 75W 71S 74W MOV E NC
281400 UTC 1.SEA ICE LIMIT 5532S 02000W 5355S 02618W 5318S 03218W 5545S 03757W 5746S 04317W 5903S 04813W 6030S 05247W 6231S 05654W 5926S 06032W 5905S 06337W 6014S 06559W 6059S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5607S 04314W 28X25NM D33B 5854S 04642W 21X12NM A76C 5456S 02543W 17X6NM A85 6004S 05130W 10X3NM ICEBERG1 6014S 05141W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5650S 03820W 9X6NM D33C 6149S 05351W 9X5NM ICEBERG2 5613S 04352W 5X3NM ICEBERG3 5904S 04739W 5X3NM ICEBERG4 5643S 04753W 4X3NM ICEBERG5 5716S 04602W 3X1NM ICEBERG6 6014S 05159W 3X2NM 4.ICEBERGS AREA A5600S 02000W 5000S 02000W 5000S 03500W 5610S 03500W B5610S 03500W 5000S 03500W 5500S 05000W 5940S 05000W C5940S 05000W 5700S 05000W 5800S 06716W 6120S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-30
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 50W: SECTOR W 5 INCR 6 BY 29/1500 AFTERWARDS SW 4 BY 29/2100 PROB OF ISOL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 5/6 WITH GUSTS INCR SW 6/7 WITH GUSTS BY 29/1200 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 5/6 WITH GUSTS DECR SW 4 BY 29/1800 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 6/7 WITH GUSTS DECR SW 5/4 BY 29/2100 PROB OF MIST DISSIPATING DURING THE EVENING VIS MODERATE TO GOOD
GERLACHE STRAIT : NW 6 WITH GUSTS BACK SW 5/4 BY 29/1500 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR GRADUALLY STARTING EVENING VIS POOR TO MODERATE OCNL VERY POOR
MARGARITA BAY : NW 6/7 WITH GUSTS BACK SECTOR W 6/5 BY 29/0900 AFTERWARDS SW 4 BY 29/1800 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR GRADUALLY DURING THE EVENING VIS MODERATE TO POOR
EREBUS Y TERROR GULF N OF 66S: NW 4/5 INCR SECTOR W 6 BY 29/1200 AFTERWARDS SECTOR S 4 BY 29/2100 VIS GOOD
EREBUS Y TERROR GULF REST OF THE AREA: SECTOR W 6 WITH GUSTS INCR SECTOR W 6/7 WITH GUSTS BY 29/0600 AFTERWARDS SECTOR S 5 BY 29/2100 PROB OF ISOL SNOW FALL IMPR STARTING EARLY MORNING VIS GOOD OCNL MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): NW 5/6 WITH GUSTS DECR NW 4 BY 29/1200 PROB OF MIST PROB OFISOL SNOW FALL VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 6/8 WITH GUSTS DECR SECTOR W 4 BY 29/0900 AFTERWARDS NW 4 BY 29/2100 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING STARTING EVENING VIS MODERATE
NORTHERN WEDDELL SEA W OF 35W: NW 4 INCR NW 6/7 WITH GUSTS BY 29/0900 AFTERWARDS SECTOR W 6/7 WITH GUSTS BY 29/1800 PROB OF FOG AND MIST IN PATCHES PROB OFMOD SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE
NORTHERN WEDDELL SEA REST OF THE AREA: SW 4/5 INCR SECTOR N 6/7 WITH GUSTS BY 29/1500 PROB OF MOD SNOW FALL WORSENING STARTING EVENING VIS MODERATE TO POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR W 4 VEER SECTOR N 4/5 BY 29/1500 AFTERWARDS SECTOR S 4 PROB OF INTERMITTENT SNOW FALL IMPR GRADUALLY TOWARDS THE END OF THE PERIOD VIS MODERATE=