Several neighborhoods in Riverside County, including Amorose, Alberhill, Glen Eden, Grace, Matri, Rice and portions of Glen Ivy, Horsethief, Laguna, McVicker and Withrow, were ordered to evacuate quickly on Wednesday evening. Before the storm. The National Meteorological Service warned that stronger showers and isolated thunderstorms starting in the middle of the morning and continuing in the early afternoon would recover in the evening and could bring precipitation rates up to a minimum. inch per hour. These speeds can cause mudslides and debris flows.