1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-27, 00:00 UTC.
NATIONAL WEATHER SERVICE
SEA ICE AND ICEBERGS ISSUED BY SHN
PRESSURE HPA
BEAUFORT SCALE WINDS.
PART 1 GALE WARNING:
WARNING 439: STRONG BARIC GRADIENT MOV E WILL PROVOKE WINDS FORCE 8 FROM SECTOR
W WITH GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W) FROM 27/1200
PART 2 GENERAL SYNOPSIS AT 21:00UTC
HIGH 1023HPA RINCON BAHIA BLANCA COASTSINTSF MOV SE
LOW 1003HPA 41S 31W MOV NE DPN EXTENDS CFNT AT 37S 32W 35S 34W MOV NE
261400 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 5632S 04353W 28X25NM
D33B 5904S 04602W 21X12NM A76C 5435S 02625W 17X6NM A85 6021S 05214W 10X3NM
ICEBERG1 6033S 05216W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5710S 03836W 9X6NM
D33C 6157S 05414W 9X5NM ICEBERG2 5632S 04434W 5X3NM ICEBERG3 5857S 04749W 5X3NM
ICEBERG4 5706S 04811W 4X3NM ICEBERG5 5729S 04731W 3X1NM ICEBERG6 6029S 05224W
3X2NM 4.ICEBERGS AREA A5600S 02000W 5000S 02000W 5000S 03500W 5610S 03500W
B5610S 03500W 5000S 03500W 5500S 05000W 5940S 05000W C5940S 05000W 5700S 05000W
5800S 06716W 6120S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-28
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 4 WITH GUSTS PROB OF ISOL STORMS STARTING EARLY
MORNING VIS GOOD OCNL MODERATE
OUTER RIO DE LA PLATA: SECTOR E 4/5 WITH GUSTS PROB OF ISOL STORMS STARTING
EARLY MORNING VIS GOOD TO MODERATE
URUGUAY SOUTH EAST COASTS: SECTOR E 4/5 WITH GUSTS VIS GOOD
MAR DEL PLATA COASTS(3617S - 3830S): SECTOR E 4/5 WITH GUSTS PROB OF SH
STARTING EVENING VIS GOOD TO MODERATE
RINCON BAHIA BLANCA COASTS(3830S - 41S): NE 5 WITH GUSTS PROB OF RAIN STARTING
EARLY MORNING SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): NE 5 WITH GUSTS PROB OF RAIN STARTING
EARLY MORNING VIS MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): NE 4 PROB OF RAIN STARTING EARLY MORNING
SPELLS OF GOOD WEATHER VIS MODERATE
SOUTH PATAGONIA COASTS(48S - 54S): VRB 3 VEER NE 4 BY 27/2100 PROB OF ISOL
RAIN TOWARDS EVENING IMPR VIS GOOD OCNL MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4/5 PROB OF SH RAIN AND SNOW MIXTURE
VIS MODERATE
ISLAS MALVINAS COASTS: SECTOR W 4 PROB OF SH RAIN AND SNOW MIXTURE VIS
MODERATE
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 30W: NW 4 BACK SECTOR S 6 WITH GUSTS BY
27/2100 PROB OF ISOL RAIN STORMS VIS MODERATE OCNL POOR
W OF 30 - E OF 40W: SECTOR S 6/7 GUST WITH 8 INTENSITY PROB OF SH VIS POOR
W OF 40 - E OF 50W: SECTOR S 6 WITH GUSTS DECR VRB 3 BY 27/1200 PROB OF SH IMPR
TOWARDS THE END OF THE PERIOD VIS GOOD
REST OF THE AREA: SECTOR E 3/4 VIS GOOD
CENTRAL EAST AREA (40S- 50S AND 20W- 40W) E OF 30 - N OF 45S: NW 6 WITH GUSTS
BACK SECTOR S 6 GUST WITH 8 INTENSITY BY 27/1200 PROB OF RAIN VIS POOR
W OF 30 - N OF 45S: SECTOR S 6/5 WITH GUSTS PROB OF SH VIS POOR TO MODERATE
REST OF THE AREA: SW 6/4 WITH GUSTS PROB OF SH OF SNOW STARTING EARLY MORNING
IMPR VIS MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 6/5 WITH GUSTS DECR
VRB 3 BY 27/0900 PROB OF ISOL RAIN SPELLS OF GOOD WEATHER VIS GOOD OCNL
MODERATE
REST OF THE AREA: VRB 3 PROB OF ISOL RAIN VIS GOOD OCNL MODERATE
SOUTH EAST AREA (50S- 60S AND 20W- 40W) E OF 30W: SW 7 GUST WITH 8 INTENSITY
VEER SECTOR W 8 BY 27/1500 PROB OF SNOW FALL VIS POOR
REST OF THE AREA: SECTOR S 6 WITH GUSTS VEER SECTOR W 8 WITH GUSTS BY 27/0900
PROB OF SNOW FALL VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) N OF 55S: SECTOR W 5 PROB OF SH SPELLS
OF GOOD WEATHER VIS MODERATE
REST OF THE AREA: SECTOR W 7 GUST WITH 8 INTENSITY PROB OF SH OF SNOW VIS
POOR
DRAKE AREA (55S- 60S AND 60W- 67W): SECTOR W 6 WITH GUSTS PROB OF ISOL SNOW FALL
VIS MODERATE
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1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
00:00 UTC 27, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 STORM WARNING:
1187/2026 LOW 962HPA 71S 52W MOV E WEAKENING PROVOKES WINDS FORCE 10 FROM SW WITH GUST IN 66S-69S 61W-54W UNTIL 27/1200
GALE WARNING:
1186/2026 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV E WEAKENING PROVOKES WINDS FORCE 9 FROM SECTOR W WITH GUST IN 66S-70S 90W-70W UNTIL 27/1500
1188/2026 STRONG BARIC GRADIENT SOUTHERN PORTION OF DRAKE STRAIT MAR DE LA FLOTA COASTS PROVOKES WINDS FORCE 8 FROM SECTOR W WITH GUST IN 60S-62S 60W-50W UNTIL 27/0900
PART 2 GENERAL SYNOPSIS AT 21:00UTC
RIDGE 61S 40W 64S 40W 67S 37W MOV E WKN
LOW 960HPA 71S 52W MOV E WKN
TROUGH 65S 51W 63S 50W 61S 48W MOV E WKN
LOW 976HPA 68S 71W MOV E WKN
261400 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 5632S 04353W 28X25NM D33B 5904S 04602W 21X12NM A76C 5435S 02625W 17X6NM A85 6021S 05214W 10X3NM ICEBERG1 6033S 05216W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5710S 03836W 9X6NM D33C 6157S 05414W 9X5NM ICEBERG2 5632S 04434W 5X3NM ICEBERG3 5857S 04749W 5X3NM ICEBERG4 5706S 04811W 4X3NM ICEBERG5 5729S 04731W 3X1NM ICEBERG6 6029S 05224W 3X2NM 4.ICEBERGS AREA A5600S 02000W 5000S 02000W 5000S 03500W 5610S 03500W B5610S 03500W 5000S 03500W 5500S 05000W 5940S 05000W C5940S 05000W 5700S 05000W 5800S 06716W 6120S 06716W
PART 3 FORECAST ISSUED 00:00 UTC VALID UNTIL 00:00 UTC 2026-09-28
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 50W: SECTOR W 6/7 WITH GUSTS BACK SW 6/5 BY 27/1200 AFTERWARDS SECTOR W 5 BY 27/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
SOUTHERN PORTION OF DRAKE STRAIT REST OF THE AREA: SECTOR W 10/8 WITH GUSTS BACK SW 6/7 WITH GUSTS BY 27/0900 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 5/6 WITH GUSTS DECR SECTOR W 4 BY 27/0900 AFTERWARDS SW 5 BY 27/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL WORSENING DURING THE EVENING VIS MODERATE TO POOR OCNL VERY POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 6 WITH GUSTS INCR SECTOR W 7/8 WITH GUSTS BY 27/0900 AFTERWARDS SW 5 BY 27/2100 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EARLY MORNING VIS MODERATE
GERLACHE STRAIT : SECTOR W 5 INCR NW 5/6 WITH GUSTS BY 27/0900 AFTERWARDS SW 5 BY 27/1800 PROB OF MIST PROB OFMOD SNOW FALL IMPR STARTING EVENING VIS VERY POOR TO POOR OCNL MODERATE
MARGARITA BAY : NW 6/7 WITH GUSTS BACK SECTOR W 6 BY 27/1200 AFTERWARDS SW 5 BY 27/2100 PROB OF FOG AND MIST IN PATCHES PROB OFMOD SNOW FALL IMPR GRADUALLY DURING THE EVENING VIS VERY POOR TO POOR OCNL MODERATE
EREBUS Y TERROR GULF N OF 66S: NW 4/5 BACK SECTOR W 5 BY 27/0900 AFTERWARDS SECTOR W 6 BY 27/1800 PROB OF MIST IMPR STARTING NOON VIS MODERATE TO GOOD
EREBUS Y TERROR GULF REST OF THE AREA: SECTOR W 7/8 WITH GUSTS DECR NW 5/4 BY 27/1200 PROB OF FOG AND MIST IN PATCHES PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE EVENING VIS MODERATE TO POOR
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA N OF 63S: SECTOR W 5/6 DECR NW 5/4 BY 27/1800 PROB OF MIST PROB OFISOL SNOW FALL SPELLS OF GOOD WEATHER STARTING NOON VIS MODERATE TO POOR OCNL GOOD
NORTHER BELLINGSHAUSEN SEA REST OF THE AREA: NW 5/6 BACK SECTOR W 6/7 WITH GUSTS BY 27/1200 AFTERWARDS SECTOR W 6 WITH GUSTS BY 27/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR DURING THE EVENING VIS MODERATE TO POOR
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NW 10 WITH GUSTS BACK SECTOR W 5/6 BY 27/1200 AFTERWARDS NW 4 BY 27/2100 PROB OF FOG PROB OFMOD SNOW FALL IMPR GRADUALLY STARTING EVENING VIS VERY POOR TO POOR
NORTHERN WEDDELL SEA W OF 35W: SECTOR N 4/5 BACK SECTOR W 5/6 BY 27/0900 AFTERWARDS NW 4 BY 27/2100 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR STARTING EARLY MORNING VIS POOR TO MODERATE OCNL VERY POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SW 4/5 VEER SECTOR W 4 BY 27/0900 AFTERWARDS SECTOR N 3 BY 27/2100 PROB OF ISOL SNOW FALL WORSENING SLOWLY TOWARDS THE END OF THE PERIOD VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR W 6/7 WITH GUSTS DECR NW 5 BY 27/1200 AFTERWARDS SECTOR S 4 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EVENING VIS MODERATE=