The heavy rainfall is expected to cause flash flooding in low-lying areas, river valleys, and regions with poor drainage. Areas such as the Little Colorado River Valley, Oak Creek and Sycamore Canyons, and the Mogollon Rim are particularly vulnerable. Flash flooding poses a significant risk to life and property, especially for those traveling or residing in flood-prone zones. Motorists are advised to avoid driving through flooded roadways, as water levels can rise rapidly and unexpectedly.