The fire department ordered the evacuation of four homes at Matthews Ranch on Matthews Ranch Road. One mobile home at Matthews Ranch has been destroyed.
Silverwood Lake Park is under voluntary evacuation orders. The fires began on the northbound 15 between Kenwood Avenue and Cleghorn Road about 1 p.m. According to the U.S. Forest Service, the Ken Fire has burned about 250 acres and is 10 percent contained. The Swarthout Fire burned about three acres.
Flames were reportedly jumping onto the freeway. Two northbound lanes were closed, but all southbound lanes remained open.
Caltrans advised commuters to avoid the area because heavy delays were expected.