Wild bushfires have injured five firefighters and destroyed property in the Grampians National Park as emergency services say it has reached the town of Pomonal.
The Country Fire Authority said it had received initial reports of property loss, but the extent of the damage is yet to be confirmed.
Four water bombing aircraft, 32 fire trucks and 120 firefighters have been deployed to the Grampians and fire authorities say conditions are starting to ease.
State Response Controller Garry Cook said the improved weather conditions were helping fire crews working on the two main fires at Bellfield and Pomonal.
"Conditions have certainly eased from what they were yesterday. The wind has moved around to the south, conditions are cooler, the humidity is up a lot higher than it was yesterday," he told the ABC.
Country Fire Authority Chief Officer Jason Heffernan said several blazes were sparked by a band of dry lightning which moved across the state on Tuesday.
Due to emergency bushfire activity, Grampians (Gariwerd) National Park is closed to all visitors until further notice.
A Total Fire Ban and Catastrophic Fire Danger Rating is in place until midnight Tuesday February 13.
Visitors are asked to remain away from the National Park as emergency services respond to the emergency situation. All walks, campgrounds and visitor sites are closed, including the Grampians Peaks Trail.