Extreme Heat Watch: Lower Yampa River Basin; Central Yampa River Basin; Upper Yampa River Basin; Grand Valley; Debeque to Silt Corridor; Central Colorado River Basin; Central Gunnison and Uncompahgre River Basin; Upper Gunnison River Valley; Paradox Valley/Lower Dolores River; Four Corners/Upper Dolores River; Animas River Basin; San Juan River Basin; Southeast Utah; Eastern Uinta Basin; Arches/Grand Flat; Canyonlands/Natural Bridges

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Extreme Heat Watch — Lower Yampa River Basin; Central Yampa River Basin; Upper Yampa River Basin; Grand Valley; Debeque to Silt Corridor; Central Colorado River Basin; Central Gunnison and Uncompahgre River Basin; Upper Gunnison River Valley; Paradox Valley/Lower Dolores River; Four Corners/Upper Dolores River; Animas River Basin; San Juan River Basin; Southeast Utah; Eastern Uinta Basin; Arches/Grand Flat; Canyonlands/Natural Bridges Severity: Severe. Certainty: Likely. * WHAT...Dangerously hot conditions with temperatures up to 108 possible. * WHERE...Portions of northwest, southwest, and west central Colorado and east central, northeast, and southeast Utah. * WHEN...From Saturday afternoon through Sunday evening. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.