A fire now named the Summit Fire is burning in the San Bernardino National Forest near Forest Service Road 2N08 (to the south of the city of Big Bear Lake and west of the Snow Summit ski resort).
The fire appears to have started near Pine Knot Avenue and Knickerbocker Road around 12:30 p.m. Within an hour, the fire had grown to more than 10 acres, according to the San Bernardino County Fire Department. At last report, it had grown again to between 20 and 25 acres. It has a moderate rate of spread, and is being fueled by moderate to heavy forest growth.
There are mandatory evacuations for the area from Knickerbocker Road east to Georgia Road and south of Pennsylvania Road to the forest boundary.
08/24/15 Update (from InciWeb):