Residents near raging fires west of Melbourne have been told it's not safe to leave their homes and to take shelter immediately.
A warning has been issued by the Country Fire Authority said people should stay within their homes as it is 'not safe for you to leave'.
Dramatic video footage shows massive flames and explosions emerging from a substation in Terang, while a grassfire burns out of control in Boorcan, 199km west of Melbourne.
Nearby resident Brett Gasper told the Herald Sun the scene of the fire caused a 'red sky and smell of smoke' which was 'daunting'.
A CFA spokesperson said people had been evacuated from nearby homes.
Lightning was reportedly seen in the area but the cause of the fires is not yet known.
Firefighters have been unable to stop the Terang fire which has travelled south-east across the Princes Highway.
Meanwhile a grassfire in Wallan in northern Melbourne was burning out of control on Saturday night and is raging along the Hume Freeway.
Earlier on Saturday, two grass fires were started near the Morack Golf Course, in the eastern suburbs, and Mill Park, in Melbourne's north, on Saturday afternoon as total fire bans covered much of the state.
Two fires in Melbourne are being investigated as deliberately lit as 31 fires burn across Victoria
Fire crews tackled the blazes before they could reach nearby homes and shopping centres
Meanwhile, a third grass fire at Gembrook, southeast of Melbourne, damaged two cottages before being bought under control.
All up, 31 fires broke out across the state on Saturday amid strong winds reaching 70km/h and temperatures forecast to reach 30 but with expectations it could reach 39C in the west.
The Bureau of Meteorology warned residents they were in for an uncomfortably warm night ahead of a cool change expected on Sunday.
'We forecast a minimum for example of 21C for Melbourne but really it's not really going to fall below 25C for any great length of time,' senior