* WHAT…Heat index values up to 108 expected.
* WHERE…Portions of central, east central, south central, and
southeast South Dakota.
* WHEN…From noon Friday to 8 PM CDT Saturday.
* IMPACTS…Hot temperatures and high humidity may cause heat
illnesses.
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Wind Advisory issued June 20 at 4:23AM MST until June 20 at 8:00PM MST by NWS Flagstaff AZ
* WHAT...Southwest winds 20 to 30 mph with gusts up to 45 mph expected. * WHERE...Navajo Nation in Arizona, and Little Colorado River Valley. * WHEN...From 8 AM MST /9 AM MDT/ this morning to 8 PM MST /9 PM MDT/ this evening. * IMPACTS...Gusty winds will blow around unsecured objects. Tree limbs could snap resulting in a few power outages. Travel will be difficult, especially for high profile vehicles.
Extreme Heat Warning issued June 20 at 4:23AM MST until June 20 at 7:00PM MST by NWS Flagstaff AZ
* WHAT...Dangerously hot conditions below 4000 feet, with daytime temperatures ranging from 99 degrees at Havasupai Gardens, to 109 degrees at Phantom Ranch. * WHERE...Lower elevations of the Grand Canyon. * WHEN...Until 7 PM MST this evening. * IMPACTS...Most individuals will be at risk for heat-related illnesses without effective cooling or adequate hydration, especially with prolonged outdoor exposure.