The Flash Flood Watch has been expanded to the north and runs until 5AM MST Wednesday. It now includes the Flagstaff area, Grand Canyon National Park, and Glen Canyon National Recreation Area. Excessive rainfall could make washes, slot canyons, and other vulnerable spots especially dangerous. Stay alert!
WHAT…Flash flooding caused by excessive rainfall is possible. * WHERE…Portions of the eastern and western Mogollon Rim, Coconino Plateau, Grand Canyon Country, Kaibab Plateau, Marble and Glen Canyons, and Oak Creek and Sycamore Canyons. * WHEN…Through late Tuesday night. * IMPACTS…Flash flooding will be possible in creeks, normally dry washes, swimming holes and over recently burned areas. Low-water crossings could also experience flash flooding, which would create deadly travel conditions. * ADDITIONAL DETAILS… – An increase in monsoonal moisture will result in more widespread thunderstorms with an increased risk for heavy rainfall, which may lead to flash flooding. – Visit www.weather.gov/safety/flood for more information on flood safety. PRECAUTIONARY/PREPAREDNESS ACTIONS… You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued.