1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 15, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1144/2026 STRONG BARIC GRADIENT NORTHERN WEDDELL SEA SOUTHERN WEDDELL SEA MOV NE DEEPENING PROVOKES WINDS FORCE 8 WITH GUST IN 63S-70S 50W-30W UNTIL 15/1800
1145/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 61S-64S 70W-63W UNTIL 16/0900
1146/2026 STRONG BARIC GRADIENT MARGARITA BAY GERLACHE STRAIT MOV NE DEEPENING PROVOKES WINDS FORCE 8 FROM SW WITH GUST IN 64S-69S 70W-65W UNTIL 16/0000
1147/2026 STRONG BARIC GRADIENT NORTHER BELLINGSHAUSEN SEA SOUTHERN BELLINGSHAUSEN SEA MOV NE DEEPENING PROVOKES WINDS FORCE 9 FROM SECTOR W WITH GUST IN 64S-73S 90W-70W UNTIL 14/1800
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 954HPA 72S 51W MOV E DPN
CFNT AT 60S 44W 63S 37W 67S 30W MOV E WKN
RIDGE 65S 90W 60S 81W MOV E INTSF
141400 UTC 1.SEA ICE LIMIT 5545S 02000W 5412S 02618W 5547S 03218W 5632S 03758W 5720S 04317W 5923S 04813W 6002S 05247W 6126S 05654W 6005S 06032W 6010S 06337W 6026S 06559W 6117S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5724S 04616W 28X25NM D33B 5923S 04801W 21X12NM A76C 5419S 02620W 17X6NM 3.ICEBERGS SMALLER THAN 10NM D32 5735S 03901W 9X6NM D33C 6157S 05414W 9X5NM ICEBERG1 5810S 04751W 5X3NM ICEBERG2 5958S 05149W 5X3NM ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5829S 05023W 3X1NM 4.ICEBERGS AREA A5616S 02000W 4901S 02000W 5200S 04009W 5820S 04000W B5820S 04000W 5317S 03933W 5903S 06716W 6145S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-16
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SW 6/7 GUST WITH 8 INTENSITY INCR SW 9 WITH GUSTS BY 15/0600 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 5/6 INCR SECTOR W 9 WITH GUSTS BY 15/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 6/7 GUST WITH 8 INTENSITY INCR SW 9 WITH GUSTS BY 15/0600 INCR PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 5/6 INCR SECTOR W 9 WITH GUSTS BY 15/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
GERLACHE STRAIT : SW 7 GUST WITH 8 INTENSITY INCR SW 8 WITH GUSTS BY 15/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
MARGARITA BAY : SECTOR W 6/7 WITH GUSTS INCR SW 8 WITH GUSTS BY 15/0600 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE
EREBUS Y TERROR GULF : SW 5/7 WITH GUSTS INCR SW 8 WITH GUSTS BY 15/1500 PROB OF MIST BLIZZARD PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: SW 5/6 WITH GUSTS VEER SECTOR W 7/8 WITH GUSTS BY 15/0900 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SW 7/8 WITH GUSTS VEER SECTOR W 9 WITH GUSTS BY 15/0600 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 7/8 WITH GUSTS BACK SW 7/5 WITH GUSTS BY 15/0900 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SECTOR W 6/7 WITH GUSTS BACK SW 5 BY 15/0300 AFTERWARDS NW 8 WITH GUSTS BY 15/0900 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 5/6 VEER NW 9 WITH GUSTS BY 15/0600 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 7 BACK SECTOR E 8 WITH GUSTS BY 15/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER TOWARDS THE END OF THE PERIOD VIS VERY POOR TO MODERATE OCNL GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-15, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 423: STRONG BARIC GRADIENT ON MOV NE WILL PROVOKE WINDS FORCE 8 FROM
SECTOR W WITH GUST BETWEEN 55S-60S 20W-60W FROM 15/1500
WARNING 422: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 FROM SECTOR W
WITH GUST BETWEEN 40S-50S AND 30W-60W
PART 2 GENERAL SYNOPSIS AT 21:00UTC
141400 UTC 1.SEA ICE LIMIT 5545S 02000W 5412S 02618W 5547S 03218W 5632S 03758W
5720S 04317W 5923S 04813W 6002S 05247W 6126S 05654W 6005S 06032W 6010S 06337W
6026S 06559W 6117S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5724S 04616W 28X25NM
D33B 5923S 04801W 21X12NM A76C 5419S 02620W 17X6NM 3.ICEBERGS SMALLER THAN 10NM
D32 5735S 03901W 9X6NM D33C 6157S 05414W 9X5NM ICEBERG1 5810S 04751W 5X3NM
ICEBERG2 5958S 05149W 5X3NM ICEBERG3 5621S 05024W 4X3NM ICEBERG4 5829S 05023W
3X1NM 4.ICEBERGS AREA A5616S 02000W 4901S 02000W 5200S 04009W 5820S 04000W
B5820S 04000W 5317S 03933W 5903S 06716W 6145S 06716W
LOW 975HPA 52S 32W MOV E WKN EXP 55S 20W BY 15/0900 EXTENDS CFNT AT 53S 25W 50S
25W 47S 37W ASOCIATED WITH OFNT AT 53S 25W 54S 31W 52S 37W
LOW 993HPA 47S 47W MOV E NC EXP 47S 27W BY 16/0000 EXTENDS CFNT AT 47S 47W 43S
53W 40S 59W MOV NE
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-16
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR W 3/4 BACK SE 4/5 WITH GUSTS BY 15/1800 VIS GOOD
OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR W 4/5 BACK SECTOR S 5 WITH GUSTS BY 15/1500 LOW
PROB OF ISOL RAIN STARTING EVENING VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR W 4/5 BACK SECTOR S 5 WITH GUSTS BY 15/1500
LOW PROB OF ISOL RAIN STARTING EVENING VIS GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR W 5 WITH GUSTS BACK SECTOR S 6/5
WITH GUSTS BY 15/0900 PROB OF SCT SH RAIN SPELLS OF GOOD WEATHER VIS GOOD TO
MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR S 5/6 GUST WITH 8 INTENSITY
DECR 5/4 BY 15/1200 DECR VRB 3 BY 15/2100 PROB OF SCT SH RAIN IMPR STARTING
EVENING VIS POOR TO GOOD
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 7/6 GUST WITH 8 INTENSITY DECR
4/3 BY 15/0900 BACK SECTOR N 5 WITH GUSTS BY 15/2100 PROB OF ISOL RAIN AND SNOW
MIXTURE IMPR STARTING NOON VIS POOR TO GOOD
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 7/6 GUST WITH 8 INTENSITY VEER
SECTOR W 5/4 BY 15/0900 VEER SECTOR N 5 BY 15/2100 PROB OF RAIN AND SNOW MIXTURE
IMPR STARTING EARLY MORNING VIS POOR TO GOOD
SOUTH PATAGONIA COASTS(48S - 54S): SW 6/5 WITH GUSTS VEER SECTOR W 4 BY
15/1500 VEER SECTOR N 5 WITH GUSTS BY 15/2100 PROB OF ISOL SNOW FALL IMPR DURING
THE EARLY MORNING VIS MODERATE TO GOOD
FIN DEL MUNDO COASTS(54S - 55S): SW 6 GUST WITH 8 INTENSITY VEER W 5 BY
15/1500 PROB OF ISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS MODERATE OCNL
POOR TO GOOD
ISLAS MALVINAS COASTS: SW 6 GUST WITH 8 INTENSITY VEER W 5 BY 15/1500 PROB OF
ISOL SNOW FALL IMPR DURING THE EARLY MORNING VIS MODERATE OCNL POOR TO GOOD.
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 35W: SECTOR W 5/6 WITH GUSTS VEER NW 6/7
GUST WITH 8 INTENSITY BY 15/1800 PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS
MODERATE
E OF 45W: NW 5/7 GUST WITH 8 INTENSITY BACK SECTOR S 6 GUST WITH 8 INTENSITY BY
15/1800 PROB OF HVY RAIN STORMS VIS POOR
REST OF THE AREA: SECTOR W 6 GUST WITH 8 INTENSITY BACK SECTOR S 6/5 GUST WITH
8 INTENSITY BY 15/1500 PROB OF SH RAIN STARTING EARLY MORNING VIS POOR OCNL
MODERATE
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) N OF 45S: NW 7/8 WITH GUSTS PROB OF SH
RAIN VIS POOR OCNL MODERATE
E OF 30 - S OF 45S: SECTOR W 8 WITH GUSTS DECR VRB 6 BY 15/1800 BACK SW 5/4
WITH GUSTS BY 15/2100 PROB OF RAIN VIS POOR
REST OF THE AREA: SECTOR W 8 WITH GUSTS BACK SECTOR S 6 GUST WITH 8 INTENSITY
BY 15/0900 DECR 5/4 PROB OF RAIN AND SNOW MIXTURE NEXT ISOL SNOW FALL VIS POOR
TO MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) N OF 45S: SECTOR W 8 WITH GUSTS BACK
SECTOR S 7/6 GUST WITH 8 INTENSITY PROB OF SH RAIN NEXT ISOL SNOW FALL VIS POOR
OCNL MODERATE
REST OF THE AREA: S 7/6 GUST WITH 8 INTENSITY VEER SW 6/5 WITH GUSTS BY 15/1500
PROB OF ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS POOR TO MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) N OF 55S: SECTOR S 6/5 WITH GUSTS VEER W
6/7 GUST WITH 8 INTENSITY BY 15/1500 PROB OF ISOL SNOW FALL IMPR STARTING NOON
VIS MODERATE OCNL POOR
REST OF THE AREA: SECTOR W 5/6 GUST WITH 8 INTENSITY INCR 8 WITH GUSTS BY
15/1800 LOW PROB OF ISOL SNOW FALL VIS MODERATE OCNL POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SW 6 GUST WITH 8 INTENSITY
PROB OF ISOL SNOW FALL SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
REST OF THE AREA: SW 6/7 GUST WITH 8 INTENSITY VEER W 8 WITH GUSTS BY 15/1500
LOW PROB OF ISOL SNOW FALL VIS MODERATE OCNL POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SW 6/7 GUST WITH 8 INTENSITY VEER W 7 GUST
WITH 8 INTENSITY BY 15/1500 LOW PROB OF ISOL SNOW FALL VIS MODERATE OCNL POOR
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