IDY10210 SECURITE Updated High Seas Forecast for South Eastern METAREA 10 SOUTH EASTERN AREA: COAST AT 25S TO 25S170E TO 29S170E TO 45S160E TO 50S160E TO 50S129E TO COAST AT 129E Issued by the Australian Government Bureau of Meteorology For 24 hours commencing 1100 UTC 10 December 2025 Part 1 Warnings Nil. Part 2 Situation at 100600 UTC Cold front [1] 43S146E 50S152E. Forecast near 45S159E 50S164E at 110000UTC. Forecast cold front [2] entering from west near 46S126E 50S129E at 110900UTC. Forecast near 46S129E 50S132E at 111200UTC. Trough forecast to develop near 32S152E 35S154E at 101500UTC, slow moving. Part 3 Forecast South of line 46S129E 47S144E 42S149E 42S162E: Westerly quarter winds, shifting northwesterly quarter within 240nm east of cold fronts and southwesterly quarter within 240nm west of cold front [1]. Wind speeds 20/33 knots. Rough to very rough seas. Moderate to heavy swell. Remainder: Winds not exceeding 25 knots. Moderate to rough seas. Low to moderate swell. Rain areas, scattered showers and isolated thunderstorms mostly within 120nm of trough and front. Visibility reducing below 2nm in precipitation. 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. WEATHER MELBOURNE The next routine forecast will be issued at 20:00 UTC Wednesday.