IDY21040 40:2:1:04:70S100E35060:01:00 SECURITE High Seas Weather Warning for METAREA 10 Issued by the Australian Government Bureau of Meteorology At 1159UTC 30 September 2025 STORM FORCE WIND WARNING 5 FOR WESTERN AND SOUTHERN AREAS SITUATION AT 301200UTC Vigorous flow associated with cold front 41S082E 50S093E to low 975hPa near 50S089E. Forecast 42S088E 50S100E to low 969hPa near 51S094E at 301800UTC, 42S096E 49S105E to low 963hPa near 53S102E at 010000UTC, 42S103E 49S113E to low 957hPa near 54S107E at 010600UTC, and 44S113E 51S119E to low 952hPa near 55S112E at 011200UTC. AREA AFFECTED Bounded by 43S119E 55S128E 56S106E 52S080E 40S080E 43S119E. FORECAST Northwesterly quarter winds within 520nm east of front, shifting westerly quarter within 480nm west of front, and turning clockwise within 480nm of low. Wind speeds 34/47 knots, increasing to 45/55 knots within 360nm of low in the northern quadrant from 301500UTC. Very rough to high seas, rising 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 1900 UTC 30 September 2025