Periodically the area has been subject to wildfires that force thousands to evacuate . The most recent are the December 2017 Lilac Fire and the May 2014 San Diego County wildfires ; before them was the Witch Creek Fire in 2007 and the Cedar Fire in 2003 . California defines a fire season in which fires are most likely to occur , usually between late July and late October ( which are the driest months of the area ) . Signs posted in numerous spots of the county provide information on the level of threats from fires based on weather conditions
May 2014 San Diego County wildfires
May 2014 San Diego County wildfires
San Diego County, California