Two National Weather Service offices have issued extreme heat warnings covering most of Utah's southern national parks and recreation areas, and the numbers that matter are not the daytime highs.
The Salt Lake City office issued a warning running from noon Friday until 9 p.m. MDT Sunday, covering Lower Washington County, Zion National Park, south-central Utah, Capitol Reef National Park and vicinity, western Canyonlands, and Glen Canyon National Recreation Area including Lake Powell. Communities in the warning area include St. George, Hurricane, Ivins, Springdale, Kanab, Escalante, Torrey, Loa, Hanksville, Bullfrog and Big Water. Forecast highs reach 107, with overnight lows in the upper 60s to mid 70s.
