IDY10250 SECURITE High Seas Forecast for Southern METAREA 10 SOUTHERN AREA: 50S80E TO 50S160E TO ICE EDGE Issued by the Australian Government Bureau of Meteorology For 24 hours commencing 1100 UTC 18 November 2025 Part 1 Warnings Refer to latest warnings for details of the area affected. Melbourne Gale Warning 5. Melbourne Gale Warning 8. Melbourne Gale Warning 10. Part 2 Situation at 180600 UTC Low [1] 964hPa near 53S158E. Forecast low [1] 966hPa moving east of area thereafter near 55S162E at 181200UTC. Trough [1] near 50S142E to low [2] 958hPa near 55S142E. Forecast 50S151E 56S158E to low 966hPa near 61S159E at 191200UTC. Cold front near 51S087E 58S095E 62S095E. Forecast near 54S096E 60S102E at 181800UTC, and then weakening thereafter. Part 3 Forecast Refer to latest warnings for boundary of affected area and type of weather system. East of line 50S113E 62S112E, outside of warning areas: Westerly quarter winds, shifting northwesterly quarter within 360nm east of trough southeasterly quarter southwest of trough, and turning clockwise within 540nm of low [1], and within 240nm of low [2]. Wind speeds 20/33 knots. Rough to very rough seas. Moderate to heavy swell. West of line 55S080E 55S086E 62S094E: Northwesterly quarter winds 20/30 knots. Rough seas. Moderate swell. Remainder: Winds not exceeding 25 knots. Moderate to rough seas. Moderate to heavy swell. Rain areas, scattered showers and isolated thunderstorms mostly within 240nm of front, trough, within 480nm of lows and north of line 53S111E 53S102E. Visibility reducing below 2nm in precipitation. Part 4 Ice edge Approximately 62S080E 63S090E 62S100E 62S110E 62S130E 60S150E 62S160E. 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 Tuesday.