Southern states are expected to be hit by fierce winds and rain as a cold front moves across the country ahead of the weekend.
Thunder, hail, cold temperatures and wind gusts of over 100km/h are set to lash Victoria, South Australia and Tasmania on Friday.
The Bureau of Meteorology issued a severe weather warning for the south-eastern part of Victoria, including Gippsland, Wimmera and parts of East Gippsland, with destructive winds including peak gusts of above 125 km/h.
The winds are expected to ease after the cold front moves through by the weekend.
The cold front is expected to hit South Australia first as it moves in from 5am and a severe weather warning is also in place for damaging winds in Adelaide.
The same warning is in place in Tasmania, as well as one for abnormally high tides. A potential king tide could occur in the southeast at about 6pm on Friday.
Sea levels could exceed the highest tide of the year by 30 to 40 cm.
Windy over the country's southeast today as a cold front sweeps through. Chilly start for Perth as it sits in the wake of the cold front. Your forecast at https://t.co/pIVv1tfrIh pic.twitter.com/quDHqbQRtF
— Bureau of Meteorology, Australia (@BOM_au) August 9, 2018
State Emergency Services are advising people in affected areas to move their vehicles under cover or away from trees, secure or put away loose items around the house and keep clear of fallen power lines.
The cold front could also bring up to 30 millimetres of snow to alpine areas across the country.
There is also a wind warning on the Illawarra Coast, Batemans Coast and Eden Coast in NSW for Friday and Saturday.
Sydney warm on Saturday and cool on Sunday
While the mercury is set to hit 25 degrees in Sydney on Saturday, cooler weather will arrive by Sunday with a drop to 17 as the cold front moves in.
Melbourne will reach a top temperature of 13 on Saturday and 14 on Sunday, with the same forecast tops for Adelaide.
The weather is expected to ease across the country by the end of the weekend with temperatures forecast to be warmer early next week.
Meanwhile in Brisbane a sunny weekend is expected with top temperatures of 24 on both days. Perth will have a top of 17 on Saturday and 21 on Sunday.
A Severe Weather Warning for damaging wind gusts about much of #Tasmania today. Windiest period for Hobart between midday and 4pm, East Coast between midday till 5pm. Abnormally high tides also expected in southeast early in the evening. https://t.co/NHL3HY0zFO pic.twitter.com/hCJuan0yg6
— Bureau of Meteorology, Tasmania (@BOM_Tas) August 9, 2018