1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 17, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1157/2026 STRONG BARIC GRADIENT MAR DE LA FLOTA COASTS SOUTHERN PORTION OF DRAKE STRAIT MOV NE DEEPENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH GUST IN 60S-64S 62W-50W FROM 17/0600 UNTIL 18/0900
1158/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 65S-72S 90W-70W UNTIL 18/0000
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 979HPA 61S 49W MOV E DPN
LOW 962HPA 73S 52W MOV E WKN
HIGH 981HPA 60S 40W MOV E WKN
RIDGE 63S 90W 62S 80W 61S 75W MOV E INTSF
161400 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 5741S 04600W 28X25NM D33B 5927S 04732W 21X12NM A76C 5428S 02631W 17X6NM 3.ICEBERGS SMALLER THAN 10NM D32 5736S 03857W 9X6NM ICEBERG1 5742S 04757W 5X3NM ICEBERG2 5953S 05104W 5X3NM ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5814S 05005W 3X1NM 4.ICEBERGS AREA A5516S 02000W 5001S 02000W 5000S 03909W 5820S 04000W B5820S 04000W 5000S 03933W 6103S 06716W 6145S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-18
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 5/6 WITH GUSTS VEER SECTOR W 6 WITH GUSTS BY 17/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 7 WITH GUSTS INCR SECTOR W 8 WITH GUSTS BY 17/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 5/6 WITH GUSTS VEER SECTOR W 6 WITH GUSTS BY 17/1200 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 7 WITH GUSTS INCR SECTOR W 8 WITH GUSTS BY 17/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
GERLACHE STRAIT : SE 3/4 VEER SECTOR W 4/5 BY 17/1500 PROB OF MIST PROB OFISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
MARGARITA BAY : SECTOR N 3/4 BACK NW 5/6 BY 17/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
EREBUS Y TERROR GULF : SW 5/4 VEER NW 5/4 BY 17/1800 PROB OF FOG AND MIST IN PATCHES WORSENING TOWARDS NIGTH VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 3/4 VEER SECTOR W 5/7 WITH GUSTS BY 17/0900 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EVENING VIS GOOD TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 7 WITH GUSTS INCR SECTOR W 9 WITH GUSTS BY 17/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 6/7 WITH GUSTS VEER NW 8 WITH GUSTS BY 17/1200 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO VERY POOR
NORTHERN WEDDELL SEA N OF 64S: SECTOR W 3/4 VEER NW 5/6 WITH GUSTS BY 17/0900 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 GUST WITH 8 INTENSITY VEER SECTOR W 5/4 WITH GUSTS BY 17/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL 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 SECTOR E 5/4 BY 17/1500 PROB OF MIST VIS GOOD TO MODERATE=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-17, 00:00 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 MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST IN CENTRAL WEST AREA (40S- 50S AND 40W- 60W)
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1026HPA 35S 50W MOV NE INTSF
CFNT AT 45S 20W 42S 24W 37S 29W MOV E
LOW 1002HPA 39S 23W MOV E DPN
LOW 993HPA 52S 62W MOV NE WKN EXP 50S 43W BY 18/0000 EXTENDS CFNT AT PENINSULA
DE VALDES COASTS EXP RINCON BAHIA BLANCA COASTS BY 17/1200
161400 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 5741S 04600W 28X25NM
D33B 5927S 04732W 21X12NM A76C 5428S 02631W 17X6NM 3.ICEBERGS SMALLER THAN 10NM
D32 5736S 03857W 9X6NM ICEBERG1 5742S 04757W 5X3NM ICEBERG2 5953S 05104W 5X3NM
ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5814S 05005W 3X1NM 4.ICEBERGS AREA A5516S
02000W 5001S 02000W 5000S 03909W 5820S 04000W B5820S 04000W 5000S 03933W 6103S
06716W 6145S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-18
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 5 BACK SECTOR N 5/4 BY 17/0600 VIS GOOD
OUTER RIO DE LA PLATA: SECTOR E 5 BACK SECTOR N 5/4 BY 17/0600 VIS GOOD
URUGUAY SOUTH EAST COASTS: SECTOR E 5 BACK SECTOR N 5/4 BY 17/0600 VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR N 6/5 WITH GUSTS DECR VRB 4/3 BY
17/2100 VIS GOOD
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 6 GUST WITH 8 INTENSITY BACK
SECTOR S 5 WITH GUSTS BY 17/1200 BACK SECTOR E BY 17/2100 VIS MODERATE TO GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 6 WITH GUSTS DECR VRB 4 BY
17/1500 VEER SECTOR N 5 WITH GUSTS BY 17/2100 VIS MODERATE TO GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR W 6 GUST WITH 8 INTENSITY VEER
SECTOR N 5 BY 17/2100 VIS MODERATE TO GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR W 6 GUST WITH 8 INTENSITY VEER
SECTOR N 5 BY 17/2100 LOW PROB OF ISOL RAIN IMPR STARTING EARLY MORNING VIS
MODERATE TO GOOD
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 5/4 DECR VRB 3 BY 17/1800 LOW PROB
OF ISOL RAIN IMPR DURING THE MORNING VIS MODERATE TO GOOD
ISLAS MALVINAS COASTS: SECTOR W 6/5 WITH GUSTS PROB OF RAIN IMPR STARTING
EVENING VIS MODERATE OCNL POOR TO GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR S 6/5 WITH GUSTS PROB OF
RAIN STORMS SPELLS OF GOOD WEATHER VIS POOR TO MODERATE OCNL GOOD
W OF 35 - E OF 50W: SECTOR S 6/5 WITH GUSTS VEER SECTOR W 6 WITH GUSTS BY
17/0600 LOW PROB OF ISOL RAIN VIS MODERATE OCNL GOOD
REST OF THE AREA: NW 5/6 WITH GUSTS BACK W VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 50 - N OF 45S: SW 7/6 GUST WITH 8
INTENSITY VEER W BY 17/1200 PROB OF RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL
MODERATE
E OF 30 - S OF 45S: SECTOR S 6 WITH GUSTS VEER SECTOR W BY 17/0300 LOW PROB OF
RAIN AND SNOW MIXTURE SPELLS OF GOOD WEATHER VIS MODERATE
REST OF THE AREA: W 6 WITH GUSTS VEER NW 7 GUST WITH 8 INTENSITY BY 17/2100
PROB OF ISOL RAIN VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: W 6 WITH GUSTS
VEER NW 8 WITH GUSTS BY 17/1200 BACK W 7/6 WITH GUSTS BY 17/2100 PROB OF ISOL
RAIN NXT RAIN VIS MODERATE TO VERY POOR
E OF 50 - S OF 45S: W 6 WITH GUSTS VEER NW 7 GUST WITH 8 INTENSITY BY 17/0900
BACK W 8 WITH GUSTS BY 17/1800 PROB OF RAIN STARTING EARLY MORNING VIS MODERATE
TO VERY POOR
REST OF THE AREA: NW 8 WITH GUSTS BACK W 6/5 WITH GUSTS BY 17/0900 PROB OF ISOL
RAIN IMPR STARTING EVENING VIS VERY POOR TO MODERATE OCNL GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 57S: SECTOR W 7/6 GUST WITH 8
INTENSITY PROB OF RAIN AND SNOW MIXTURE VIS POOR OCNL VERY POOR
REST OF THE AREA: SECTOR S 4 VEER SECTOR W 5/6 WITH GUSTS BY 17/0900 PROB OF
SNOW FALL STARTING EARLY MORNING VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) E OF 50 - N OF 55S: SECTOR W 7/6 GUST
WITH 8 INTENSITY BACK SECTOR S BY 17/1500 PROB OF RAIN AND SNOW MIXTURE IMPR
TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
W OF 50 - N OF 55S: NW 6 WITH GUSTS BACK SECTOR S BY 17/0600 PROB OF RAIN IMPR
TOWARDS THE END OF THE PERIOD VIS MODERATE
REST OF THE AREA: SECTOR W 6/7 GUST WITH 8 INTENSITY PROB OF SNOW FALL VIS POOR
OCNL VERY POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR S 5 WITH GUSTS VEER SECTOR W 6 WITH
GUSTS BY 17/1200 LOW PROB OF ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE
OCNL GOOD
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