IDY21070 40:2:1:04:55S100E25060:01:00 SECURITE High Seas Weather Warning for METAREA 10 Issued by the Australian Government Bureau of Meteorology At 0015UTC 19 September 2026 GALE WARNING 8 FOR WESTERN AREA SITUATION AT 190000UTC Vigorous flow associated with trough 35S115E 39S116E. Forecast trough near 35S119E 37S119E 40S120E at 190600UTC, trough 35S122E 40S124E at 191200UTC, near 38S126E 41S128E at 191800UTC, and decaying thereafter. AREA AFFECTED Bounded by 38S112E 41S129E 35S127E 32S113E 38S112E. FORECAST Westerly quarter winds within 180nm west of trough, shifting northwesterly quarter within 120nm east of trough. Wind speeds 30/40 knots, easing below 34 knots throughout after 191800UTC. Rough to very rough seas. Moderate to heavy swell. PLEASE BE AWARE Wind and wave forecasts are averages. Wind gusts can be 40 per cent stronger than the forecast, and stronger still in squalls and thunderstorms. Maximum waves can be twice the forecast height. The next alert will be issued by 0700 UTC 19 September 2026