1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 27, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1189/2026 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
1190/2026 STRONG BARIC GRADIENT EREBUS Y TERROR GULF MOV E WEAKENING WILL PROVOKE WINDS FORCE 8 FROM SECTOR W WITH GUST IN 66S-68S 60W-50W FROM 27/1800 UNTIL 28/0600
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 962HPA 68S 39W MOV E WKN
TROUGH 65S 43W 65S 33W 61S 33W MOV E WKN
LOW 968HPA 69S 62W MOV NE 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 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-28
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT W OF 60W: SECTOR W 5/6 DECR SW 5/4 BY 28/0300 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 7/6 DECR SW 6/5 BY 28/0600 PROB OF MIST IMPR DURING THE MORNING VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS W OF 60W: SECTOR W 5/6 BACK SW 5/4 BY 28/0600 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING NOON VIS MODERATE TO GOOD
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR W 6/7 DECR SECTOR W 5 BY 27/1800 AFTERWARDS SW 5/5 BY 28/0600 PROB OF MIST IMPR DURING THE MORNING VIS GOOD TO MODERATE
GERLACHE STRAIT : SECTOR W 5/6 BACK SW 5/4 BY 28/0000 AFTERWARDS SECTOR W 3 BY 28/0900 PROB OF FOG AND MIST IN PATCHES PROB OFINTERMITTENT SNOW FALL IMPR STARTING EARLY MORNING VIS POOR TO MODERATE OCNL VERY POOR
MARGARITA BAY : SECTOR W 5/6 WITH GUSTS BACK SW 6 BY 27/2100 AFTERWARDS SECTOR W 4 BY 28/0600 PROB OF MIST PROB OFINTERMITTENT SNOW FALL IMPR GRADUALLY STARTING EARLY MORNING VIS POOR TO MODERATE
EREBUS Y TERROR GULF N OF 66S: NW 4 BACK SW 5/6 WITH GUSTS BY 28/0000 AFTERWARDS SECTOR S 4 BY 28/0600 PROB OF MIST DISSIPATING DURING THE MORNING VIS MODERATE TO GOOD
EREBUS Y TERROR GULF REST OF THE AREA: SECTOR W 5 INCR SW 7/8 WITH GUSTS BY 27/2100 AFTERWARDS SECTOR S 5 BY 28/0600 PROB OF MIST DISSIPATING STARTING EARLY MORNING VIS MODERATE TO GOOD
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): SECTOR W 6/7 DECR NW 5/6 BY 27/2100 PROB OF ISOL SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS MODERATE
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): SW 7/8 WITH GUSTS DECR NW 5 BY 28/0000 AFTERWARDS NW 6/7 WITH GUSTS BY 28/0900 PROB OF MIST PROB OFMOD SNOW FALL WORSENING STARTING NIGTH VIS MODERATE TO POOR OCNL VERY POOR
NORTHERN WEDDELL SEA W OF 35W: SECTOR W 6/7 WITH GUSTS BACK SW 6 WITH GUSTS BY 28/0300 PROB OF ISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS MODERATE TO POOR
NORTHERN WEDDELL SEA REST OF THE AREA: SECTOR N 6/7 WITH GUSTS BACK NW 6 BY 28/0300 PROB OF INTERMITTENT SNOW FALL SPELLS OF GOOD WEATHER DURING THE NIGTH VIS MODERATE
SOUTHERN WEDDELL SEA (68-78S 20-60W): SECTOR S 5/6 WITH GUSTS INCR SW 6/7 WITH GUSTS BY 27/2100 PROB OF MIST DISSIPATING DURING THE MORNING VIS MODERATE TO GOOD=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 27, SEPTEMBER 2026.
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 NOT CHANGE PROVOKES WINDS FORCE 8 FROM
SECTOR W WITH GUST BETWEEN 55S-60S AND 20W-60W
PART 2 GENERAL SYNOPSIS AT 09:00UTC
HIGH 1024HPA 43S 56W MOV E NC EXP 43S 43W BY 28/1200
LOW 1003HPA 40S 27W MOV E WKN EXTENDS CFNT35S 29W 37S 28W 40S 27W MOV E
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
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-28
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 4 WITH GUSTS PROB OF SH STORMS NEXT IMPR TOWARDS
THE END OF THE PERIOD VIS POOR TO MODERATE
OUTER RIO DE LA PLATA: SECTOR E 5/6 WITH GUSTS PROB OF SH STORMS NEXT IMPR
TOWARDS THE END OF THE PERIOD VIS POOR TO MODERATE
URUGUAY SOUTH EAST COASTS: NE 4/6 WITH GUSTS PROB OF ISOL SH RAIN TOWARDS
EVENING VIS GOOD TO MODERATE
MAR DEL PLATA COASTS(3617S - 3830S): NE 4/5 WITH GUSTS PROB OF ISOL RAIN
STORMS DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): NE 4/6 WITH GUSTS LOW PROB OF RAIN
SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
PENINSULA DE VALDES COASTS(41S - 45S): SECTOR E 6/4 WITH GUSTS LOW PROB OF
RAIN SPELLS OF GOOD WEATHER VIS POOR OCNL MODERATE
GOLFO DE SAN JORGE COASTS(45S - 48S): SECTOR E 4/5 WITH GUSTS PROB OF ISOL
RAIN SH SPELLS OF GOOD WEATHER VIS MODERATE OCNL POOR
SOUTH PATAGONIA COASTS(48S - 54S): NE 4 WITH GUSTS PROB OF ISOL RAIN DURING
THE EVENING VIS GOOD TO MODERATE
FIN DEL MUNDO COASTS(54S - 55S): SECTOR W 4 WITH GUSTS VEER SECTOR N 3 BY
28/0000 PROB OF ISOL RAIN NEXT IMPR DURING THE EVENING VIS MODERATE TO GOOD
ISLAS MALVINAS COASTS: SECTOR S 3 LOW PROB OF ISOL RAIN NEXT IMPR DURING THE
EVENING VIS MODERATE TO GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR S 7 WITH GUSTS PROB OF RAIN
VIS POOR
NORTH AREA (35S- 40S AND 20W- 55W) W OF 40 - E OF 50W: SECTOR S 4 BACK SECTOR E
BY 27/2100 PROB OF ISOL RAIN NEXT IMPR TOWARDS THE END OF THE PERIOD VIS
MODERATE TO GOOD
NORTH AREA (35S- 40S AND 20W- 55W) REST OF THE AREA: SECTOR E 3/5 WITH GUSTS
PROB OF RAIN TOWARDS THE END OF THE PERIOD VIS GOOD TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR S 6/5 WITH GUSTS PROB OF ISOL
RAIN SNOW FALL VIS MODERATE OCNL POOR
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: SECTOR S 3/4 PROB OF ISOL
SNOW FALL VIS MODERATE OCNL GOOD
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) REST OF THE AREA: SECTOR S 3 BACK
SECTOR N 5 WITH GUSTS BY 27/1500 PROB OF RAIN TOWARDS EVENING VIS GOOD TO
MODERATE OCNL POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) S OF 55S: SECTOR W 8 WITH GUSTS PROB OF
SNOW FALL SPELLS OF GOOD WEATHER VIS VERY POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W) REST OF THE AREA: SECTOR W 7 GUST WITH 8
INTENSITY PROB OF SNOW FALL SPELLS OF GOOD WEATHER VIS POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55S: SECTOR W 8 WITH GUSTS PROB OF
SNOW FALL SPELLS OF GOOD WEATHER VIS VERY POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) REST OF THE AREA: SECTOR W 6 WITH GUSTS
PROB OF SNOW FALL SPELLS OF GOOD WEATHER VIS POOR OCNL MODERATE
DRAKE AREA (55S- 60S AND 60W- 67W): SW 6/4 WITH GUSTS PROB OF ISOL RAIN SNOW
FALL VIS MODERATE
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