683 WWUS75 KFGZ 210416 NPWFGZ URGENT - WEATHER MESSAGE National Weather Service Flagstaff AZ 916 PM MST Sat Jun 20 2026 AZZ006-221715- /O.UPG.KFGZ.XH.A.0001.260622T1700Z-260624T0200Z/ /O.NEW.KFGZ.XH.W.0004.260622T1700Z-260624T0200Z/ Grand Canyon Country- Including the cities of Supai, Grand Canyon Village, Tusayan, and Grand Canyon North Rim 916 PM MST Sat Jun 20 2026 ...EXTREME HEAT WARNING IN EFFECT FROM 10 AM MONDAY TO 7 PM MST TUESDAY BELOW 4000 FEET... * WHAT...Dangerously hot conditions expected below 4000 feet, with daytime temperatures ranging from 101 degrees at Havasupai Gardens, to 112 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...From 10 AM Monday to 7 PM MST Tuesday. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take action when you see symptoms of heat exhaustion and heat stroke. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. Stay cool, stay hydrated, stay informed. && $$ Konieczny