1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-26, 12:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 438: STRONG BARIC GRADIENT MOV E PROVOKES WINDS FORCE 8 WITH GUST
BETWEEN 40S-60S AND 20W-30W UNTIL 26/2100
PART 2 GENERAL SYNOPSIS AT 09:00UTC
251400 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 5646S 04403W 28X25NM
D33B 5914S 04541W 21X12NM A76C 5435S 02625W 17X6NM A85 6027S 05226W 10X3NM
ICEBERG1 6041S 05226W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5716S 03845W 9X6NM
D33C 6157S 05422W 9X5NM ICEBERG2 5630S 04458W 5X3NM ICEBERG3 5852S 04802W 5X3NM
ICEBERG4 5723S 04826W 4X3NM ICEBERG5 5729S 04731W 3X1NM ICEBERG6 6054S 05305W
3X2NM 4.ICEBERGS AREA A5610S 02000W 5000S 02000W 5000S 03500W 5610S 03500W
B5610S 03500W 5000S 03500W 5400S 05000W 5930S 05000W C5930S 05000W 5400S 05000W
5900S 06716W 6045S 06716W
LOW 998HPA 44S 44W MOV NE DPN EXTENDS CFNT AT 41S 51W 42S 49W 43S 46W MOV NE
LOW 989HPA 47S 33W MOV E WKN EXTENDS CFNT AT 35S 42W 40S 38W 46S 34W MOV E
CFNT AT 53S 38W 55S 31W 58S 26W MOV E
HIGH 1018HPA 39S 58W MOV SE INTSF EXP 42S 54W BY 27/1200
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-27
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 4 WITH GUSTS PROB OF ISOL RAIN TOWARDS THE END
OF THE PERIOD VIS GOOD TO MODERATE
OUTER RIO DE LA PLATA: SECTOR E 4/5 WITH GUSTS PROB OF ISOL RAIN TOWARDS THE END
OF THE PERIOD VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR E 3/4 WITH GUSTS VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR S 3 BACK SECTOR E 4 WITH GUSTS BY
26/1500 PROB OF ISOL RAIN TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): NE 4/5 WITH GUSTS PROB OF ISOL SH
RAIN TOWARDS NIGTH VIS GOOD TO MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): NE 3/5 WITH GUSTS PROB OF ISOL SH RAIN
TOWARDS NIGTH VIS GOOD TO MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR N 3/4 WITH GUSTS PROB OF ISOL SH
RAIN TOWARDS NIGTH VIS GOOD TO MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR S 4 WITH GUSTS BACK SECTOR N WITH
GUSTS BY 26/1500 PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS GOOD OCNL
MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR S 4 WITH GUSTS BACK SECTOR W BY
26/1500 PROB OF ISOL RAIN SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS
MODERATE TO GOOD
ISLAS MALVINAS COASTS: SECTOR S 4 WITH GUSTS BACK SECTOR W BY 26/1500 PROB OF
ISOL RAIN TOWARDS NIGTH VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR W 7 WITH GUSTS BACK SECTOR S
WITH GUSTS BY 27/0000 PROB OF RAIN STORMS VIS POOR
W OF 40 - E OF 50W: SECTOR S 7/4 WITH GUSTS PROB OF ISOL SH RAIN IMPR TOWARDS
THE END OF THE PERIOD VIS POOR TO GOOD
REST OF THE AREA: SECTOR S 7/3 WITH GUSTS BACK SECTOR E 4 WITH GUSTS BY 27/0300
PROB OF ISOL RAIN TOWARDS EVENING IMPR VIS MODERATE TO GOOD OCNL POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30W: NW 8 WITH GUSTS BACK SECTOR
S 7 WITH GUSTS BY 26/2100 PROB OF RAIN RAIN AND SNOW MIXTURE VIS VERY POOR TO
POOR
: SECTOR S 6/7 WITH GUSTS PROB OF RAIN RAIN AND SNOW MIXTURE VIS POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 7/4 WITH GUSTS PROB
OF ISOL SH SNOW FALL SPELLS OF GOOD WEATHER VIS POOR TO MODERATE OCNL GOOD
REST OF THE AREA: SECTOR S 6/3 WITH GUSTS PROB OF ISOL RAIN SPELLS OF GOOD
WEATHER VIS MODERATE OCNL GOOD
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR S 6/7 WITH GUSTS VEER SECTOR W
WITH GUSTS BY 27/0300 PROB OF RAIN AND SNOW MIXTURE SNOW FALL VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W): SECTOR S 7/6 WITH GUSTS VEER SECTOR W 7
GUST WITH 8 INTENSITY BY 26/1800 PROB OF ISOL RAIN SNOW FALL SPELLS OF GOOD
WEATHER VIS POOR OCNL MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SW 5/6 WITH GUSTS PROB OF ISOL RAIN SNOW
FALL VIS MODERATE OCNL POOR
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 26, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1184/2026 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV E WEAKENING PROVOKES WINDS FORCE 9 WITH GUST IN 66S-70S 90W-70W FROM 26/1800
1185/2026 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV E WEAKENING PROVOKES WINDS FORCE 9 FROM SECTOR W WITH GUST IN 68S-70S 90W-70W UNTIL 27/1800
PART 2 GENERAL SYNOPSIS AT 09:00UTC
RIDGE 62S 50W 65S 51W 71S 49W MOV E WKN
STRONG BARIC GRADIENT 62S 82W 64S 78W 66S 73W MOV E WKN
LOW 976HPA 68S 71W MOV E WKN
251400 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 5646S 04403W 28X25NM D33B 5914S 04541W 21X12NM A76C 5435S 02625W 17X6NM A85 6027S 05226W 10X3NM ICEBERG1 6041S 05226W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5716S 03845W 9X6NM D33C 6157S 05422W 9X5NM ICEBERG2 5630S 04458W 5X3NM ICEBERG3 5852S 04802W 5X3NM ICEBERG4 5723S 04826W 4X3NM ICEBERG5 5729S 04731W 3X1NM ICEBERG6 6054S 05305W 3X2NM 4.ICEBERGS AREA A5610S 02000W 5000S 02000W 5000S 03500W 5610S 03500W B5610S 03500W 5000S 03500W 5400S 05000W 5930S 05000W C5930S 05000W 5400S 05000W 5900S 06716W 6045S 06716W
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-27
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 55W: SECTOR W 4/5 INCR SW 6 BY 27/0000 PROB OF FOG PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS GOOD TO MODERATE OCNL POOR
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR N 3 BACK SECTOR W 5/6 BY 26/1800 AFTERWARDS SW 6/7 WITH GUSTS BY 27/0900 PROB OF ISOL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 55W: SW 3/5 VEER SECTOR W 4/6 BY 26/1800 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS POOR TO MODERATE OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR N 3/4 BACK SECTOR W 5/6 WITH GUSTS BY 26/2100 AFTERWARDS SW 4 BY 27/0600 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NIGTH VIS MODERATE TO GOOD
GERLACHE STRAIT : SECTOR N 5/6 BACK SW 5/4 BY 26/2100 AFTERWARDS SECTOR W 5/6 BY 27/0900 PROB OF FOG PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO POOR
MARGARITA BAY : NW 6/7 WITH GUSTS BACK SECTOR W 5 BY 27/2100 AFTERWARDS NW 4/5 BY 27/0900 PROB OF MIST PROB OFMOD SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS VERY POOR TO POOR
EREBUS Y TERROR GULF : SECTOR N 4/5 BACK NW 5 BY 26/2100 AFTERWARDS SECTOR W 5/6 BY 27/0300 PROB OF FOG AND MIST IN PATCHES WORSENING STARTING EVENING VIS MODERATE OCNL POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR W 5/6 VEER NW 4/6 BY 27/0300 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NW 8 WITH GUSTS INCR NW 10 WITH GUSTS BY 27/0000 AFTERWARDS SECTOR W 10 WITH GUSTS BY 27/0900 PROB OF FOG PROB OFMOD SNOW FALL IMPR GRADUALLY STARTING EARLY MORNING VIS VERY POOR TO POOR
NORTHERN WEDDELL SEA W OF 35W: SW 4/5 VEER SECTOR N 4/5 BY 26/2100 AFTERWARDS SECTOR W 5/6 PROB OF MIST PROB OFINTERMITTENT SNOW FALL WORSENING STARTING EARLY MORNING VIS MODERATE TO POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR W 4 BACK SW 4/3 AFTERWARDS SECTOR W 4 BY 27/0900 PROB OF MIST PROB OFISOL SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR
SOUTHERN WEDDELL SEA (68-78S 20-60W): SW 4/5 VEER SECTOR N 5/6 BY 27/0000 AFTERWARDS SECTOR N 4 BY 27/0900 PROB OF ISOL SNOW FALL IMPR STARTING EVENING VIS MODERATE TO GOOD=