FQAU23 AMMC 012100 IDY10220 SECURITE High Seas Forecast for Western METAREA 10 12S TO 30S BETWEEN 90E AND 125E, AND 30S TO 50S BETWEEN 80E AND 129E Issued by the Australian Government Bureau of Meteorology For 24 hours commencing 2300 UTC 1 July 2025 Part 1 Warnings Nil. Part 2 Situation at 011800 UTC Trough [1] 32S127E 39S130E 42S129E to low [1] 1011hPa near 43S125E, forecast trough [1] moving east of area thereafter. Cold front [1] near 45S082E 50S092E. Forecast near 44S117E 50S126E at 030000UTC. Trough [2] near 25S103E 30S107E 34S106E to low [2] 1009hPa near 35S101E. Forecast near 26S113E to low [2] 1006hPa near 36S117E to 36S121E at 030000UTC. Low [1] 1011hPa near 43S125E. Forecast low [1] 1009hPa near 45S127E at 020900UTC, then weakening thereafter. Forecast cold front [2] entering area from west near 30S080E 33S081E 35S080E at 021200UTC, and near 30S085E 35S084E 37S080E at 030000UTC. Part 3 Forecast Refer to latest warnings for boundary of affected area and type of weather system. South of line 44S080E 44S114E: Northwesterly quarter winds shifting southerly quarter west of front [1]. Wind speeds 25/33 knots. Rough to very rough seas. Moderate to heavy swell. Within 360nm of low [2] in the northwestern semicircle: Clockwise winds 25/33 knots. Rough to very rough seas. Moderate swell. West of line 38S085E 30S085E: Northeasterly quarter winds 25/33 knots east of cold front [2]. Rough to very rough seas. Moderate to heavy swell. Remainder: Winds not exceeding 25 knots. Moderate to rough seas. Moderate to heavy swell. Rain areas, scattered showers and isolated thunderstorms mostly within 180nm of fronts, troughs, and within 360nm of lows. 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 09:00 UTC Wednesday.