"City of San Diego and Central Zone companies are on-scene of a vegetation fire in the area of Highway 52 and Mast Blvd. The fire is no threat to the community but smoke will likely drift through the area. Lakeside Brush 1 is assisting with fire. There are closures on Highway 52 (expect delays)."
There were no reports of structural threats, according to California Highway Patrol.
CHP reported at 4:30 p.m. that "they are about to reopen the lanes."
From Facebook @ 4:30 pm: "Traffic coming east is already backed up on the 52 all the way back to Hwy 15 according to the wife."