Strong surface high pressure over the western United States forced Santa Ana winds through and below passes and canyons. In Riverside County, a dozen power poles snapped like toothpicks near Corona cutting power to dozens of rural customers. In Riverside, a tree crushed a parked vehicle, and damaged a home. In Mira Loma, 12 power poles blew down, cutting power to hundreds, and forced the closure of Hamner Avenue for two days. In addition, heavy blowing dust and debris restricted visibility, creating hazardous driving conditions on the I-15.