Extreme Heat Warning: Lower Washington County; Zion National Park; South Central Utah; Capitol Reef National Park and Vicinity; Western Canyonlands; Glen Canyon Recreation Area/Lake Powell

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Extreme Heat Warning — Lower Washington County; Zion National Park; South Central Utah; Capitol Reef National Park and Vicinity; Western Canyonlands; Glen Canyon Recreation Area/Lake Powell Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with temperatures up to 112 for lower Washington County, Zion National Park, and Glen Canyon Recreation Area and up to 105 elsewhere, with little relief overnight. * WHERE...Capitol Reef National Park and Vicinity, Glen Canyon Recreation Area/Lake Powell, South Central Utah, Western Canyonlands, Lower Washington County, and Zion National Park. * WHEN...Until 9 PM MDT Sunday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events.