WOAU07 AMMC 072330 IDY21060 40:2:1:04:70S100E35060:01:00 SECURITE High Seas Weather Warning for METAREA 10 Issued by the Australian Government Bureau of Meteorology At 2330UTC 7 December 2025 GALE WARNING 7 FOR SOUTHEASTERN AND SOUTHERN AREAS SITUATION AT 080000UTC Forecast vigorous flow associated with a developing low 959hPa near 53S140E at 080600UTC, low 958hPa near 54S144E at 081200UTC, low 962hPa near 55S148E at 081800UTC, and low 966hPa near 57S151E at 090000UTC. AREA AFFECTED Bounded by 53S134E 56S156E 51S155E 49S146E 49S136E 53S134E. FORECAST Clockwise winds 30/40 knots developing within 240nm of low in northern semicircle from 080600UTC, expanding to 300nm of low by 081800UTC. 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 0700 UTC 08 December 2025