A Flash Flood Watch will be in is in effect for the Navajo and Hopi nations, as well as the Grand Canyon, today until midnight tonight. The National Weather Service says an abundance of moisture exists and storms that develop today will be slow moving. Storms could produce rain amounts of one-to-two inches per hour. If you have plans to be outdoors on the reservations today, especially in canyons, keep an eye on the weather. Head to higher ground and stay clear of creeks and washes. Also don’t cross flooded areas in your vehicle.