Lightning triggered eight new wildfires in Yukon on Thursday, including a 25 hectare fire about 20 kilometres south of Dawson City.

With dry forests and more lightning forecast for Friday, Yukon Wildland Fire Management called in reinforcements from British Columbia. Twenty-one B.C. firefighters are expected to arrive in Whitehorse Friday afternoon and be deployed to districts they're most needed.

The 25 hectare fire near Bonanza Creek Road was one of four new fires reported Thursday in the Dawson City district. The other four are in the Mayo, Carmacks and Ross River areas.

Air tankers and ground crews are working to control and contain some of the fires. 

Fire information officer George Maratos said they will need the public's help as well.

"More lightning activity is predicted and hot temperatures so it is sort of a recipe for increased fire activity," he said.

"We're going to be sending our resources to any new lightning starts and the last thing you want to do is to have to pull those resources off a fire that was lightning-caused to go action a fire that was preventable."