- Hot temperatures, 105-110° for lower elevation areas, expected today and tomorrow.
- An Excessive Heat Warning is valid for areas below 4000′ in the Grand Canyon, Marble/Glen Canyons, and the valleys of Yavapai County from 10 AM MST Today – 8 PM MST Friday.
- Isolated showers/thunderstorms possible across the higher elevations today, becoming more focused over eastern Arizona Friday through the weekend.
- Storms are likely to be high-based, with gusty winds and little rain – posing a threat of lightning caused fire starts.