* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...A portion of northwest Arizona, including the following area, Northwest Plateau. * WHEN...Through Thursday afternoon. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. Low-water crossings may be flooded. * ADDITIONAL DETAILS... - Multiple rounds of showers and thunderstorms are expected to impact portions of northern Mohave County through Thursday. Storms will be accompanied by heavy rainfall, and a flash flooding threat may evolve for areas that experience multiple rounds of heavy rain. - http://www.weather.gov/safety/flood