Unusually hot weather, a drought in Southern California, and the Santa Anna winds contributed to a series of forest fires that burned over 500,000 acres of land. The Witch Creek Fire started in the early afternoon on October 21; the Guejito Fire started early in the predawn hours of October 22. The two fires merged during the early daylight hours of October 22, 2007. Before the end, seven separate fires had burned, 365 homes were destroyed, and every citizen in the city of San Diego was impacted in some way. During the San Diego Wildfires of 2007, mobile command centers were used to enable communications and continued public safety operations for the affected areas from Santa Barbara county to the U.S.-Mexico border. Not one life was lost within the city of San Diego.