Environment & Climate · World & National · North America

Extreme Heat Warning issued September 10 at 8:17PM MST until September 11 at 8:00PM MST by NWS Phoenix AZ

* WHAT...Dangerously hot and humid conditions. Afternoon temperatures 105 to 109 expected. Major Heat Risk. * WHERE...The Yuma area. * WHEN...Until 8 PM MST Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat events. Overexposure can cause heat cramps and heat exhaustion to develop and