IDY21050 40:2:1:04:70S100E35060:01:00 SECURITE High Seas Weather Warning for METAREA 10 Issued by the Australian Government Bureau of Meteorology At 0000UTC 19 September 2026 STORM FORCE WIND WARNING 6 FOR WESTERN, SOUTHEASTERN AND SOUTHERN AREAS SITUATION AT 190000UTC Vigorous flow associated with cold front 42S107E to low 956hPa near 56S120E. Forecast 40S110E 50S122E to low 949hPa near 58S126E at 190600UTC, 46S123E 52S130E to low 949hPa near 58S134E at 191200UTC, cold front 53S138E to low 943hPa near 60S143E to strengthening warm front 60S148E 57S155E at 191800UTC, and cold front 56S146E to low 940hPa near 61S147E to warm front near 61S155E 58S160E at 200000UTC. AREA AFFECTED Bounded by 43S107E 54S160E 62S160E 60S136E 52S110E 43S107E. FORECAST Northwesterly quarter winds within 600nm east of cold front, shifting southwesterly quarter within 600nm west of cold front. Northeasterly quarter winds developing within 90nm south of warm front at 191800UTC. Wind speeds 34/47 knots. Wind speeds increasing to 45/55 knots within 180nm of low in northern quadrant from 191200UTC to 191800UTC. Very rough to high seas, increasing to very high in storm force winds. 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