NWS / NOAA weather: Extreme Heat Warning issued July 5 at 11:29AM MST until July 8 at 8:00PM MST by NWS Flagstaff AZ
* WHAT...For the Extreme Heat Warning below 4000 feet, dangerously
hot conditions expected below 4000 feet, with daytime temperatures
ranging from 98 degrees at Havasupai Gardens, to 112 degrees at
Phantom Ranch. For the Extreme Heat Watch below 4000 feet,
dangerously hot conditions possible below 4000 feet, with daytime
temperatures ranging from 99 degrees at Havasupai Gardens, to 113
degrees at Phantom Ranch.
* WHERE...Lower elevations of the Grand Canyon.
* WHEN...For the Extreme Heat Warning, from 10 AM Monday to 8 PM MST
Wednesday. For the Extreme Heat Watch, from Wednesday evening
through Saturday evening.
* IMPACTS...Most individuals will be at risk for heat-related
illnesses without effective cooling or adequate hydration,
especially with prolonged outdoor exposure.
Source: NWS / NOAA weather.