IDY21080 40:2:1:04:70S075E35060:01:00 SECURITE High Seas Weather Warning for METAREA 10 Issued by the Australian Government Bureau of Meteorology At 0830UTC 29 April 2026 GALE WARNING 9 FOR WESTERN AND SOUTHERN AREAS SITUATION AT 290600UTC Vigorous flow associated with trough near 50S096E 53S104E. Forecast trough 47S097E 52S104E at 291200UTC, 43S102E 47S108E at 291800UTC, 40S114E 49S115E at 300000UTC, and 40S118E 46S119E at 300600UTC AREA AFFECTED Bounded by 46S087E 39S113E 50S113E 57S092E 46S087E. FORECAST Southwesterly quarter winds 30/40 knots within 300nm of trough initially, expanding to within 360nm east of trough by 300000UTC. 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 1300 UTC 29 April 2026