IDY21000 40:2:1:04:70S075E35060:01:00 SECURITE High Seas Weather Warning for METAREA 10 Issued by the Australian Government Bureau of Meteorology, BNOC At 1141UTC 18 September 2021 GALE WARNING FOR WESTERN AND SOUTHERN AREAS SITUATION AT 1200UTC Vigorous northwesterly flow developing associated with a trough, forecast 31S069E 47S078E 53S087E at 190600UTC, 31S074E 53S089E at 191200UTC. AREA AFFECTED Bounded by 36S080E 50S099E 54S099E 55S093E 48S080E 36S080E. FORECAST Northwesterly quarter winds 30/40 knots developing by 182100UTC. Winds expanding to within 420nm east of trough by 190600UTC. Rough to very rough seas. Moderate 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 1800 UTC 18 September 2021