474 WWUS75 KFGZ 040901 NPWFGZ URGENT - WEATHER MESSAGE National Weather Service Flagstaff AZ 201 AM MST Fri Jun 4 2021 AZZ006-042115- /O.CON.KFGZ.EH.W.0002.000000T0000Z-210606T0300Z/ Grand Canyon Country- Including the cities of Grand Canyon Village, Supai, and North Rim 201 AM MST Fri Jun 4 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MST SATURDAY BELOW 4000 FEET... * WHAT...Dangerously hot conditions with temperatures up to 110 below 4000 feet. * WHERE...Lower elevations of the Grand Canyon, including Phantom Ranch and the Colorado River. * WHEN...Until 8 PM MST Saturday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working outdoors or participating in outdoor activities. 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. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ For more information from the National Weather Service visit https://weather.gov/flagstaff