You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.

* WHAT...Flash flooding caused by excessive rainfall continues to be possible. * WHERE...Portions of northwest Arizona, including the following areas, Lake Havasu and Fort Mohave, Lake Mead National Recreation Area, Northwest Deserts and Northwest Plateau, southeast California, including the following areas, Eastern Mojave Desert and San Bernardino County-Upper Colorado River Valley, and southern Nevada, including the following areas, Lake Mead National Recreation Area, Las Vegas Valley, Northeast Clark County, Sheep Range, Southern Clark County, Spring Mountains-Red Rock Canyon and Western Clark and Southern Nye County. * WHEN...Through this 11:00 pm PDT/MST tonight. * 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... - Anomalous moisture combined with modest instability will help to fuel another round isolated-to-scattered showers and thunderstorms capable of producing moderate-to-heavy rain across southern Nevada, northwest Arizona, and the Mojave Preserve this afternoon and evening. - http://www.weather.gov/safety/flood