1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-21, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 430: LOW 993HPA AT 43S 62W MOV SE DEEPENING EXPECTED 45S 48W BY 21/2100
WILL PROVOKE WINDS FORCE 8 FROM SW WITH GUST IN OUTER RIO DE LA PLATA MAR DEL
PLATA COASTS FROM 21/1500
WARNING 429: STRONG BARIC GRADIENT 35S 45W 30S 50W PROVOKES WINDS FORCE 8 FROM N
WITH GUST
WARNING 428: LOW 993HPA AT 43S 62W MOV SE DEEPENING EXPECTED 45S 48W BY 21/2100
PROVOKES WINDS FORCE 9 FROM SECTOR S WITH GUST IN RINCON BAHIA BLANCA COASTS
PENINSULA DE VALDES COASTS GOLFO DE SAN JORGE COASTS CENTRAL WEST AREA (40S- 50S
AND 40W- 60W)
PART 2 GENERAL SYNOPSIS AT 21:00UTC
201400 UTC 1.SEA ICE LIMIT 5529S 02000W 5408S 02617W 5336S 03217W 5536S 03757W
5710S 04316W 5821S 04813W 5954S 05248W 6232S 05655W 6252S 06033W 6358S 06336W
6017S 06558W 6051S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5732S 04518W 28X25NM
D33B 5927S 04527W 21X12NM A76C 5430S 02626W 17X6NM A85 6110S 05345W 10X3NM
3.ICEBERGS SMALLER THAN 10NM D32 5737S 03815W 9X6NM D33C 6136S 05358W 9X5NM
ICEBERG1 5654S 04624W 5X3NM ICEBERG2 5910S 05042W 5X3NM ICEBERG3 5759S 04930W
4X3NM ICEBERG4 5820S 04807W 3X1NM ICEBERG5 6102S 05315W 10X3NM 4.ICEBERGS AREA
A5600S 02000W 5000S 02000W 5900S 04800W 5300S 04800W 5000S 04000W B5900S 06200W
6500S 06500W 5900S 04800W 5300S 04800W
LOW 993HPA 43S 62W MOV SE DPN EXP 45S 48W BY 21/2100 EXTENDS CFNT AT MOV NE
LOW 999HPA 35S 49W MOV SE WKN
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-22
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR W 5/6 WITH GUSTS BACK SW 7 GUST WITH 8 INTENSITY
BY 21/1200 PROB OF ISOL STORMS NXT ISOL RAIN VIS MODERATE OCNL POOR
OUTER RIO DE LA PLATA: W 5/6 WITH GUSTS BACK SW 8 WITH GUSTS BY 21/1500 PROB OF
ISOL STORMS NXT ISOL RAIN VIS POOR OCNL VERY POOR
URUGUAY SOUTH EAST COASTS: SECTOR W 4/6 WITH GUSTS PROB OF HVY STORMS NXT ISOL
RAIN VIS POOR OCNL MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR W 5/6 WITH GUSTS BACK SW 8 WITH
GUSTS BY 21/1200 PROB OF SH VIS POOR OCNL VERY POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR W 6/7 WITH GUSTS BACK SECTOR S
8 WITH GUSTS BY 21/1200 PROB OF SH VIS POOR OCNL VERY POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR S 7/8 WITH GUSTS PROB OF HVY
RAIN NXT SH VIS POOR OCNL VERY POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR S 8/7 WITH GUSTS PROB OF HVY RAIN
NXT SH VIS POOR OCNL VERY POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 7/6 WITH GUSTS PROB OF SH OF RAIN
SH OF SNOW VIS POOR
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 6/5 WITH GUSTS PROB OF SH OF RAIN SH
OF SNOW VIS POOR
ISLAS MALVINAS COASTS: SECTOR S 6 WITH GUSTS PROB OF SH OF RAIN SH OF SNOW VIS
POOR
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: SECTOR W 4 VEER SECTOR N 5/6 WITH
GUSTS VIS GOOD MODERATE
E OF 50W: SECTOR N 8 WITH GUSTS PROB OF HVY RAIN NXT STORMS VIS VERY POOR
REST OF THE AREA: SECTOR N 7 WITH GUSTS BACK SECTOR W 7 BY 21/0900 PROB OF ISOL
STORMS NXT SH VIS POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: SECTOR W 5 VEER
SECTOR N 5/6 WITH GUSTS VIS GOOD MODERATE
E OF 30 - N OF 45S: SECTOR N 6/8 WITH GUSTS PROB OF HVY RAIN STARTING EARLY
MORNING VIS POOR VERY POOR
REST OF THE AREA: NW 6/7 GUST WITH 8 INTENSITY PROB OF ISOL RAIN NXT HVY RAIN
VIS MODERATE VERY POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50 - N OF 45S: SECTOR N 6/8 WITH
GUSTS PROB OF RAIN NXT HVY RAIN VIS POOR VERY POOR
E OF 50 - S OF 45S: SECTOR N 7 WITH GUSTS BACK SECTOR S 8 WITH GUSTS PROB OF
RAIN NXT HVY RAIN VIS POOR VERY POOR
REST OF THE AREA: SECTOR S 7/9 WITH GUSTS PROB OF HVY RAIN SH VIS VERY POOR
OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 5/6 WITH GUSTS BACK SECTOR S 6
WITH GUSTS PROB OF SH OF RAIN SH OF SNOW VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR S 6/7 WITH GUSTS PROB OF SH OF
RAIN SH OF SNOW VIS POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SW 5 VEER SECTOR W 5/6 WITH GUSTS PROB OF SH
OF SNOW STARTING EARLY MORNING VIS MODERATE POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 21, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1
NO WARNINGS
PART 2 GENERAL SYNOPSIS AT 21:00UTC
LOW 976HPA 71S 38W MOV E WKN
RIDGE 60S 70W 64S 68W 68S 58W MOV E WKN
LOW 975HPA 71S 73W MOV E DPN EXTENDS CFNT AT 71S 73W 68S 72W 63S 82W MOV E
201400 UTC 1.SEA ICE LIMIT 5529S 02000W 5408S 02617W 5336S 03217W 5536S 03757W 5710S 04316W 5821S 04813W 5954S 05248W 6232S 05655W 6252S 06033W 6358S 06336W 6017S 06558W 6051S 06716W 2.ICEBERGS GREATER THAN 10NM A81 5732S 04518W 28X25NM D33B 5927S 04527W 21X12NM A76C 5430S 02626W 17X6NM A85 6110S 05345W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5737S 03815W 9X6NM D33C 6136S 05358W 9X5NM ICEBERG1 5654S 04624W 5X3NM ICEBERG2 5910S 05042W 5X3NM ICEBERG3 5759S 04930W 4X3NM ICEBERG4 5820S 04807W 3X1NM ICEBERG5 6102S 05315W 10X3NM 4.ICEBERGS AREA A5600S 02000W 5000S 02000W 5900S 04800W 5300S 04800W 5000S 04000W B5900S 06200W 6500S 06500W 5900S 04800W 5300S 04800W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-22
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 5 WITH GUSTS VEER NW 6/7 WITH GUSTS BY 21/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SW 4/5 WITH GUSTS VEER SECTOR W 6/7 WITH GUSTS BY 21/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING STARTING NOON VIS MODERATE TO VERY POOR
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 5 WITH GUSTS VEER NW 6/7 WITH GUSTS BY 21/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SW 4/5 WITH GUSTS VEER SECTOR W 6/7 WITH GUSTS BY 21/1200 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING STARTING NOON VIS MODERATE TO VERY POOR
GERLACHE STRAIT : NE 4/3 BACK SECTOR W 4/5 BY 21/1500 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR
MARGARITA BAY : NE 5/7 BACK NW 5/4 BY 21/1500 PROB OF MIST PROB OFISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS MODERATE TO POOR
EREBUS Y TERROR GULF : SW 3/4 VEER NW 4/5 BY 21/1500 PROB OF FOG AND MIST IN PATCHES WORSENING TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE OCNL VERY POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 64S: NW 5/7 WITH GUSTS BACK SW 6/5 BY 21/1200 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS POOR TO MODERATE
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: SECTOR W 5/6 WITH GUSTS BACK SW 6/5 BY 21/0900 PROB OF MIST PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SECTOR W 5/6 BACK SW 6 WITH GUSTS BY 21/1200 PROB OF FOG AND MIST IN PATCHES SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO MODERATE
NORTHERN WEDDELL SEA N OF 64S: SECTOR W 3/4 VEER SECTOR N 4/5 BY 21/1500 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: NW 4/5 BACK SECTOR W 4/3 BY 21/1200 PROB OF FOG AND MIST IN PATCHES IMPR STARTING EARLY MORNING VIS VERY POOR TO MODERATE OCNL GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SE 3/4 BACK SECTOR E 5/4 BY 21/1500 PROB OF MIST VIS GOOD TO MODERATE=