1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-29, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 441: STRONG BARIC GRADIENT ON WILL PROVOKE WINDS FORCE 8 FROM NE WITH
GUST BETWEEN 35S-40S 45W-55W FROM 29/1800
WARNING 440: STRONG BARIC GRADIENT ON WILL PROVOKE WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 55S-60S 30W-50W FROM 29/1500
PART 2 GENERAL SYNOPSIS AT 21:00UTC
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
HIGH 1025HPA 44S 47W MOV NE NC EXP 41S 38W BY 29/2100
CFNT AT 56S 21W 54S 25W 53S 28W MOV E
CFNT AT RINCON BAHIA BLANCA COASTS MOV E
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-30
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 4 BACK SECTOR S 4/5 WITH GUSTS BY 29/1200 PROB
OF ISOL RAIN STORMS IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
OUTER RIO DE LA PLATA: SECTOR E 5 WITH GUSTS BACK SECTOR S 5/6 WITH GUSTS BY
29/1500 PROB OF RAIN IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR E 5 WITH GUSTS BACK SW 4/5 WITH GUSTS BY
29/2100 PROB OF ISOL RAIN STORMS VIS MODERATE TO POOR
MAR DEL PLATA COASTS(3617S - 3830S): NE 4 BACK SECTOR S 6 WITH GUSTS BY
29/1500 PROB OF HVY RAIN IMPR TOWARDS THE END OF THE PERIOD VIS POOR TO
MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 4 PROB OF SH RAIN VIS
MODERATE OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 4/5 WITH GUSTS PROB OF SH VIS
MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR E 5 WITH GUSTS PROB OF RAIN VIS
MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): VRB 3 VIS GOOD
FIN DEL MUNDO COASTS(54S - 55S): SECTOR N 3/4 VIS GOOD
ISLAS MALVINAS COASTS: VRB 3 VIS GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR S 6/5 WITH GUSTS PROB OF SH
VIS MODERATE OCNL POOR
W OF 30 - E OF 40W: SECTOR S 4 PROB OF SH VIS MODERATE
REST OF THE AREA: NE 6 WITH GUSTS INCR 8 BY 29/1800 PROB OF HVY RAIN STARTING
EARLY MORNING VIS MODERATE TO VERY POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: SECTOR S 5 WITH GUSTS PROB
OF SH RAIN AND SNOW MIXTURE VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR S 4/5 WITH GUSTS PROB OF SH RAIN AND SNOW MIXTURE IMPR
TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: VRB 3 INCR NE 5/6
WITH GUSTS BY 29/1800 PROB OF RAIN STARTING EVENING VIS GOOD TO MODERATE
E OF 50 - S OF 45S: SW 4 DECR VRB 3 BY 29/1200 PROB OF ISOL RAIN IMPR DURING
THE MORNING VIS MODERATE TO GOOD
W OF 50 - N OF 45S: NE 5/6 WITH GUSTS PROB OF RAIN VIS POOR
REST OF THE AREA: VRB 3 INCR SECTOR E 5/6 WITH GUSTS BY 29/1200 PROB OF RAIN
STARTING EARLY MORNING VIS GOOD TO MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SW 7/6 GUST WITH 8 INTENSITY
PROB OF SH OF SNOW VIS POOR TO MODERATE
W OF 30 - N OF 55S: SECTOR S 6/5 WITH GUSTS VEER SECTOR W 5 BY 29/1800 PROB OF
SH OF SNOW IMPR DURING THE MORNING VIS MODERATE TO GOOD
REST OF THE AREA: SW 6 WITH GUSTS VEER SECTOR W 7/8 WITH GUSTS BY 29/1500 PROB
OF SNOW FALL STARTING EARLY MORNING VIS MODERATE TO VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SW 4 DECR SECTOR W 3 BY
29/1200 PROB OF ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS GOOD OCNL MODERATE
REST OF THE AREA: SECTOR W 5 WITH GUSTS INCR 7/8 WITH GUSTS BY 29/1200 PROB OF
ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE TO POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 3/4 VIS GOOD
-----------------------------------------------------------------
NNNN=
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=