1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-16, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 425: STRONG BARIC GRADIENT ON MOV NE PROVOKES WINDS FORCE 8 FROM SECTOR
N WITH GUST IN PENINSULA DE VALDES COASTS GOLFO DE SAN JORGE COASTS SOUTH
PATAGONIA COASTS CENTRAL WEST AREA (40S- 50S AND 40W- 60W)
WARNING 424: STRONG BARIC GRADIENT PROVOKES WINDS FORCE 8 FROM SECTOR N WITH
GUST BETWEEN 35S-40S AND 30W-20W UNTIL 17/0000
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1026HPA 37S 59W MOV NE INTSF EXP 32S 44W BY 17/1200
LOW 999HPA 52S 69W MOV E DPN EXP 52S 49W BY 17/1200 EXTENDS CFNT AT 52S 69W 46S
67W 40S 70W MOV SE EXP 52S 49W 45S 52W 45S 52W 45S 56W BY 17/1200
LOW 996HPA 44S 27W MOV SE DPN EXTENDS CFNT AT 44S 27W 35S 38W 31S 53W MOV SE
151400 UTC 1.SEA ICE LIMIT 5527S 02000W 5408S 02618W 5439S 03218W 5557S 03757W
5658S 04316W 5914S 04813W 5921S 05247W 6157S 05654W 6223S 06033W 5937S 06337W
6115S 06559W 6053S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5733S 04608W 28X25NM
D33B 5926S 04753W 21X12NM A76C 5424S 02626W 17X6NM 3.ICEBERGS SMALLER THAN 10NM
D32 5736S 03857W 9X6NM D33C 6157S 05414W 9X5NM ICEBERG1 5801S 04806W 5X3NM
ICEBERG2 5956S 05143/W 5X3NM ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5829S 05023W
3X1NM 4.ICEBERGS AREA A5516S 02000W 5001S 02000W 5000S 03909W 5820S 04000W
B5820S 04000W 5000S 03933W 6103S 06716W 6145S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-17
COASTAL AREAS:
INNER RIO DE LA PLATA: SE 3 BACK SECTOR N /4 BY 17/0300 VIS GOOD
OUTER RIO DE LA PLATA: SE 3 BACK SECTOR N /4 BY 17/0300 VIS GOOD
URUGUAY SOUTH EAST COASTS: VRB 3 BACK SECTOR N 3/4 BY 17/0000 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): VRB 3 VEER SECTOR N 4/5 BY 16/1800 INCR
5/6 WITH GUSTS BY 17/0300 VIS GOOD TO MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 6/7 WITH GUSTS BACK VRB 3/4
BY 17/0900 VIS POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR N 6/7 GUST WITH 8 INTENSITY BACK
SECTOR W 5/4 BY 17/0300 VIS VERY POOR TO MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 6/7 GUST WITH 8 INTENSITY BACK
SECTOR W 6/5 BY 16/2100 PROB OF MIST FOG PATCHES DURING THE MORNING VIS VERY
POOR TO POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 6/7 GUST WITH 8 INTENSITY BACK
SECTOR W 5/4 BY 16/1800 PROB OF MIST FOG PATCHES DURING THE MORNING PROB OFISOL
RAIN STARTING EVENING IMPR VIS VERY POOR TO POOR
FIN DEL MUNDO COASTS(54S - 55S): NW 5/4 WITH GUSTS BACK SECTOR W 4/5 BY
16/1800 PROB OF DRIZZLE RAIN TOWARDS THE END OF THE PERIOD IMPR VIS MODERATE
ISLAS MALVINAS COASTS: SECTOR N 6/5 WITH GUSTS BACK SECTOR W 5 BY 17/0300 VIS
GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR N 7/8 WITH GUSTS BACK SW 5/6
WITH GUSTS BY 17/0000 PROB OF RAIN STORMS STARTING NIGTH IMPR VIS VERY POOR TO
POOR
E OF 40W: SECTOR S 6/5 WITH GUSTS DECR 4/3 BY 17/0600 PROB OF SH IMPR GRADUALLY
VIS MODERATE TO GOOD
REST OF THE AREA: SECTOR S 6/4 VEER VRB 3/4 BY 16/2100 VEER SECTOR N 5/6 WITH
GUSTS BY 17/0600 PROB OF SH DURING THE MORNING VIS MODERATE TO GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SW 5/6 WITH GUSTS SECTOR W BY 17/0000
PROB OF ISOL RAIN DURING THE MORNING VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W): SW 5/6 WITH GUSTS VEER NW 6/7 GUST
WITH 8 INTENSITY BY 16/1800 PROB OF DRIZZLE RAIN STARTING EARLY MORNING VIS VERY
POOR TO POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 56S: SECTOR W 6/7 WITH GUSTS PROB
OF ISOL SNOW FALL TOWARDS THE END OF THE PERIOD VIS POOR
REST OF THE AREA: SECTOR W 7/6 WITH GUSTS BACK VRB /3 BY 17/0000 VIS VERY POOR
TO GOOD
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR W 6/7 WITH GUSTS DECR
6/5 BY 17/0900 BACK SECTOR S 5/4 BY 17/1200 PROB OF DRIZZLE RAIN STARTING NIGTH
VIS VERY POOR TO MODERATE
REST OF THE AREA: SECTOR W 6/7 VIS VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6/5 WITH GUSTS BACK SECTOR S 4/3 BY
16/2100 INCR 4/5 BY 17/1200 VIS GOOD
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 16, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1155/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST BACK IN 60S-65S 50W-30W UNTIL 16/1500
1156/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV NE DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH GUST IN 62S-72S 90W-70W FROM 17/0000 UNTIL 17/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 956HPA 62S 33W MOV E DPN
LOW 946HPA 68S 32W MOV E WKN
HIGH 978HPA 65S 55W MOV E INTSF
RIDGE 63S 90W 65S 85W 68S 80W MOV E INTSF
151400 UTC 1.SEA ICE LIMIT 5527S 02000W 5408S 02618W 5439S 03218W 5557S 03757W 5658S 04316W 5914S 04813W 5921S 05247W 6157S 05654W 6223S 06033W 5937S 06337W 6115S 06559W 6053S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5733S 04608W 28X25NM D33B 5926S 04753W 21X12NM A76C 5424S 02626W 17X6NM 3.ICEBERGS SMALLER THAN 10NM D32 5736S 03857W 9X6NM D33C 6157S 05414W 9X5NM ICEBERG1 5801S 04806W 5X3NM ICEBERG2 5956S 05143/W 5X3NM ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5829S 05023W 3X1NM 4.ICEBERGS AREA A5516S 02000W 5001S 02000W 5000S 03909W 5820S 04000W B5820S 04000W 5000S 03933W 6103S 06716W 6145S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-17
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 5/6 WITH GUSTS VEER SECTOR W 5 BY 17/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 7/5 WITH GUSTS BACK SW 5/4 WITH GUSTS BY 17/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 5/6 WITH GUSTS VEER SECTOR W 5 BY 17/0300 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS POOR TO MODERATE OCNL GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 7/5 WITH GUSTS BACK SW 5/4 WITH GUSTS BY 17/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS POOR TO MODERATE
GERLACHE STRAIT : SW 6 WITH GUSTS DECR SW 5/4 BY 16/2100 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING NIGTH VIS GOOD TO MODERATE
MARGARITA BAY : NW 3/4 VEER SECTOR N 5/6 BY 17/0000 PROB OF MIST PROB OFINTERMITTENT SNOW FALL VIS GOOD TO MODERATE OCNL POOR
EREBUS Y TERROR GULF : SECTOR W 5/4 BACK SW 5 BY 16/2100 PROB OF MIST VIS MODERATE TO GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SECTOR W 5/4 DECR SW 5/4 BY 16/1800 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 5/6 INCR SECTOR W 8 WITH GUSTS BY 16/2100 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 6/5 WITH GUSTS VEER SECTOR W 5/6 WITH GUSTS BY 16/1800 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR DURING THE NIGTH VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SECTOR W 7/8 WITH GUSTS BACK SW 6/5 WITH GUSTS BY 16/1800 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SW 7/8 WITH GUSTS VEER SECTOR W 5 WITH GUSTS BY 17/0000 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 3/4 BACK NE 5/7 BY 16/1800 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE MORNING VIS GOOD TO MODERATE OCNL POOR=