IDY21091 40:2:1:04:70S125E35045:01:00 SECURITE High Seas Weather Warning for METAREA 10 Issued by the Australian Government Bureau of Meteorology At 1751UTC 5 October 2025 STORM FORCE WIND WARNING 11 FOR SOUTHEASTERN AND SOUTHERN AREAS SITUATION AT 051800UTC Vigorous flow associated with trough 39S140E to low 956hPa near 52S146E. Forecast trough 38S145E 48S150E to low 955hPa near 53S150E at 051800UTC, 36S149E 47S156E to low 947hPa near 53S155E at 060000UTC, 41S160E to low 950hPa near 55S159E at 060600UTC, and 46S166E to low 951hPa near 55S164E at 061200UTC, and 49S174E to low 950hPa near 56S168E. AREA AFFECTED Bounded by 44S136E 50S136E 60S160E 42S162E 36S151E 39S143E 44S136E. FORECAST Northwesterly quarter winds shifting southwesterly quarter west of trough tending clockwise within 240nm of low. Wind speeds 34/47 knots within 480nm west of trough and within 300nm east of trough, and 240nm of the western semicircle of low. Wind speeds increasing to 40/50 knots within 180nm of the northern semicircle of low, shifting to within 180nm of the northwestern semicircle from 060300UTC. Winds easing below 48 knots by 061200UTC, and throughout area by 061800UTC. Very rough to high seas, rising to very high seas with 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 0100 UTC 06 October 2025