The thunderstorms could lead to localized flooding in areas with a 100% chance of precipitation, such as Window Rock, Page, and Prescott. Heavy rainfall in Phoenix and surrounding areas may disrupt travel and outdoor activities. Residents in cities like Yuma Mcas and Havasu City may experience scattered thunderstorms, which could still pose risks for those outdoors. High humidity levels may also contribute to discomfort, particularly in areas with higher temperatures like Yuma and Phoenix.