SAN DIEGO (FOX 5/KUSI) -- For the third day in a row this week, some schools are canceling classes due to strong winds and power outages. The following school districts will close on Thursday, Jan. 23: Mountain Empire Unified School District Warner Unified School District "The safety of students and school staff is of the utmost importance to San Diego County school districts," SDCOE said. Fire crews respond to brush fire in Rancho Bernardo; evacuations lifted A Red Flag Warning that went into effect Monday for San Diego County mountains and valleys has been extended until 8 p.m. Thursday. On Wednesday, a fire broke out in the Rancho Bernardo area, causing evacuations that were eventually lifted. In northern Los Angeles County, a fire exploded to over 9,400 acres near Castaic, forcing tens of thousands of evacuations and impacting traffic on Interstate 5.