1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
12:00 UTC 28, SEPTEMBER 2026.
NATIONAL WEATHER SERVICE (NWS)
SEA ICE AND ICEBERGS ISSUED BY SHN PRESSURE HPA BEAUFORT SCALE WINDS
PART 1 GALE WARNING:
1193/2026 STRONG BARIC GRADIENT SOUTHERN BELLINGSHAUSEN SEA MOV E DEEPENING WILL PROVOKE WINDS FORCE 8 WITH GUST IN 65S-69S 90W-70W FROM 28/1500 UNTIL 29/0900
PART 2 GENERAL SYNOPSIS AT 09:00UTC
LOW 971HPA 61S 32W MOV E WKN
RIDGE 65S 55W 67S 54W 69S 53W MOV E WKN
TROUGH 71S 86W 70S 78W 69S 72W MOV E DPN
271400 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 5620S 04337W 28X25NM D33B 5900S 04618W 21X12NM A76C 5443S 02610W 17X6NM A85 6017S 05201W 10X3NM ICEBERG1 6033S 05216W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5701S 03831W 9X6NM D33C 6154S 05402W 9X5NM ICEBERG2 5628S 04416W 5X3NM ICEBERG3 5857S 04745W 5X3NM ICEBERG4 5653S 04758W 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 2026-09-29
COASTAL AREAS:
SOUTHERN PORTION OF DRAKE STRAIT : SW 6/5 WITH GUSTS VEER SECTOR W 5 BY 28/2100 AFTERWARDS SECTOR W 6 WITH GUSTS BY 29/0900 PROB OF ISOL SNOW FALL WORSENING STARTING EARLY MORNING VIS GOOD TO MODERATE
MAR DE LA FLOTA COASTS W OF 60W: SW 4/5 VEER SECTOR W 5 BY 28/2100 PROB OF MIST PROB OFISOL SNOW FALL TEMPORARILY DISSIPATING DURING THE EVENING VIS GOOD TO MODERATE OCNL POOR
MAR DE LA FLOTA COASTS REST OF THE AREA: SECTOR S 4 INCR SECTOR W 6/7 WITH GUSTS BY 28/2100 PROB OF ISOL SNOW FALL WORSENING SLOWLY DURING THE EVENING VIS GOOD TO MODERATE
GERLACHE STRAIT : SECTOR W 3/4 INCR SECTOR W 5/6 WITH GUSTS BY 28/2100 PROB OF MIST PROB OFMOD SNOW FALL IMPR STARTING EARLY MORNING VIS POOR TO MODERATE OCNL VERY POOR
MARGARITA BAY : SECTOR N 4 INCR NW 6/7 WITH GUSTS BY 28/2100 AFTERWARDS SW 5 BY 29/0900 PROB OF FOG AND MIST IN PATCHES PROB OFMOD SNOW FALL IMPR TOWARDS THE END OF THE PERIOD VIS MODERATE TO POOR OCNL VERY POOR
EREBUS Y TERROR GULF : SECTOR N 3/4 INCR NW 6/7 WITH GUSTS BY 28/2100 AFTERWARDS SECTOR W 7 WITH GUSTS BY 29/0900 PROB OF ISOL SNOW FALL WORSENING DURING THE EARLY MORNING VIS GOOD TO MODERATE
OCEANIC AREAS:
NORTHER BELLINGSHAUSEN SEA (60-66S 70-90W): NW 5/6 WITH GUSTS DECR NW 5/4 BY 29/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EVENING VIS MODERATE TO GOOD
SOUTHERN BELLINGSHAUSEN SEA (66-73S 70-90W): NW 6/7 WITH GUSTS INCR NW 8 WITH GUSTS BY 28/1500 AFTERWARDS SECTOR W 5/6 WITH GUSTS BY 29/0900 PROB OF MOD SNOW FALL IMPR GRADUALLY TOWARDS THE END OF THE PERIOD VIS VERY POOR TO POOR
NORTHERN WEDDELL SEA W OF 35W: SECTOR S 4/5 VEER SECTOR W 3/4 BY 28/2100 AFTERWARDS NW 5/6 WITH GUSTS BY 29/0600 PROB OF MIST DISSIPATING STARTING EVENING VIS MODERATE TO GOOD
NORTHERN WEDDELL SEA REST OF THE AREA: SW 3 INCR SECTOR S 5/6 WITH GUSTS BY 29/0000 PROB OF MIST PROB OFISOL SNOW FALL IMPR STARTING EVENING VIS MODERATE TO GOOD
SOUTHERN WEDDELL SEA (68-78S 20-60W): SW 4/5 VEER SECTOR W 5 BY 29/0300 PROB OF ISOL SNOW FALL WORSENING TOWARDS THE END OF THE PERIOD VIS GOOD TO MODERATE=
1:31:06:01:00
SECURITE
WEATHER BULLETIN FOR SHIPPING - METAREA 6-
2026-09-28, 12:00 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 PROVOKES WINDS FORCE 8 FROM SECTOR W WITH
GUST IN SOUTH EAST AREA (50S- 60S AND 20W- 40W)
PART 2 GENERAL SYNOPSIS AT 09:00UTC
271400 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 5620S 04337W 28X25NM
D33B 5900S 04618W 21X12NM A76C 5443S 02610W 17X6NM A85 6017S 05201W 10X3NM
ICEBERG1 6033S 05216W 10X3NM 3.ICEBERGS SMALLER THAN 10NM D32 5701S 03831W 9X6NM
D33C 6154S 05402W 9X5NM ICEBERG2 5628S 04416W 5X3NM ICEBERG3 5857S 04745W 5X3NM
ICEBERG4 5653S 04758W 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
HIGH 1026HPA 44S 50W EXTENDS RIDGE AT 44S 50W 51S 63W 55S 70W
LOW 1002HPA 38S 20W MOV SE DPN
PART 3 FORECAST ISSUED 12:00 UTC VALID UNTIL 12:00 UTC 2026-09-29
COASTAL AREAS:
INNER RIO DE LA PLATA: SECTOR E 3/4 VEER SECTOR S 4/5 WITH GUSTS BY 29/1200 PROB
OF DRIZZLE RAIN DURING THE MORNING NEXT RAIN STORMS VIS MODERATE TO POOR
OUTER RIO DE LA PLATA: E 4 BACK SECTOR S 5/6 WITH GUSTS BY 29/1200 PROB OF ISOL
RAIN NXT PROB OF RAIN STORMS STARTING NIGTH VIS MODERATE TO POOR
URUGUAY SOUTH EAST COASTS: NE 5 WITH GUSTS PROB OF MIST DRIZZLE NXT PROB OF RAIN
STORMS STARTING EARLY MORNING VIS MODERATE TO POOR
MAR DEL PLATA COASTS(3617S - 3830S): NE 4/5 BACK VRB 3 BY 29/0300 PROB OF
DRIZZLE RAIN NXT PROB OFHVY RAIN STORMS STARTING EARLY MORNING VIS MODERATE TO
POOR
RINCON BAHIA BLANCA COASTS(3830S - 41S): SECTOR N 3/4 VEER VRB 3 BY 28/1800
VEER SECTOR S 3/4 BY 29/0600 PROB OF ISOL RAIN STARTING NIGTH VIS GOOD OCNL
MODERATE
PENINSULA DE VALDES COASTS(41S - 45S): VRB 3 VEER SECTOR S 4 BY 29/0000 INCR
4/5 BY 29/0900 PROB OF SH RAIN VIS MODERATE OCNL POOR
GOLFO DE SAN JORGE COASTS(45S - 48S): E 4/5 PROB OF RAIN VIS MODERATE OCNL
POOR
SOUTH PATAGONIA COASTS(48S - 54S): SECTOR N 3/4 PROB OF MIST FOG PATCHES
DRIZZLE VIS POOR
FIN DEL MUNDO COASTS(54S - 55S): VRB 3 VEER SECTOR N BY 28/1800 PROB OF MIST
FOG PATCHES STARTING NIGTH VIS GOOD TO MODERATE
ISLAS MALVINAS COASTS: SECTOR W 3 VEER VRB BY 28/2100 VIS GOOD
OCEANIC AREAS:
NORTH AREA (35S- 40S AND 20W- 55W) E OF 40W: SECTOR S 7/5 WITH GUSTS PROB OF SH
IMPR GRADUALLY VIS POOR TO MODERATE
REST OF THE AREA: SECTOR E 3/4 BACK NE 5/6 WITH GUSTS BY 29/0000 PROB OF RAIN
STORMS STARTING EARLY MORNING VIS GOOD TO POOR
CENTRAL EAST AREA (40S- 50S AND 20W- 40W): SECTOR S 6/5 VEER SW BY 29/0000 VIS
MODERATE
CENTRAL WEST AREA (40S- 50S AND 40W- 60W) E OF 50W: VRB 3 VIS GOOD
REST OF THE AREA: VRB 3/4 VEER SECTOR E 5/6 WITH GUSTS BY 28/1800 PROB OF HVY
RAIN STORMS STARTING EVENING VIS MODERATE TO POOR
SOUTH EAST AREA (50S- 60S AND 20W- 40W): SECTOR W 6/7 GUST WITH 8 INTENSITY BACK
SW 7/5 WITH GUSTS BY 28/2100 VIS VERY POOR TO POOR
SOUTH WEST AREA (50S- 60S AND 40W- 60W) S OF 55S: SW 7/6 WITH GUSTS DECR 6/5 BY
28/2100 VEER SECTOR W BY 29/0300 VIS POOR
REST OF THE AREA: SECTOR W 5/6 WITH GUSTS BACK SW 4/3 BY 29/0000 VIS MODERATE
TO GOOD
DRAKE AREA (55S- 60S AND 60W- 67W): SW 5/4 VEER SECTOR W 4/3 BY 29/0000 VIS
GOOD
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