Flash Flood in La Paz County, Arizona

US-95 near Milepost 69 was flooded. Timing estimated from radar. No damages or injuries were reported.

A very moist (PWATs 2.0+ inches) and unstable (MLCAPE 2000-3000 J/KG) air mass led to be a very conducive environment for vigorous thunderstorm activity across portions of southwest Arizona. A cluster of thunderstorms developed near Yuma during the mid-afternoon hours leading to flash flooding and damaging winds across the Fortuna Hills area. Thereafter, additional storm complexes developed during the late afternoon and evening hours across portions of Yuma and La Paz Counties, likely due to the combination of terrain lift as well as colliding outflows from the storms that developed earlier in the afternoon across portions of Imperial and Riverside Counties.