Flood Watch

* WHAT...Flash flooding caused by excessive rainfall is possible.

* WHERE...Grand Canyon, Kaibab Plateau, Marble and Glen Canyons.

* WHEN...From 11 AM MST /noon MDT/ this morning through this evening.

* IMPACTS...Flash flooding will be possible in creeks, normally dry washes, swimming holes, and over recently burned areas. Raging killer currents will be possible in side canyons and narrow slot canyons. Low-water crossings may be flooded.

* ADDITIONAL DETAILS... - Thunderstorms are expected to develop this afternoon and continue into the early evening hours across northwestern Arizona. With deep monsoonal moisture in place, any stronger storm will have the potential to produce heavy rainfall and cause flash flooding. - Some locations that may experience flooding include... Page area Slot Canyons, Supai, and the Grand Canyon National Park downstream of the Dragon Bravo Fire scar. - Additional information is available at weather.gov/flagstaff.