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Extreme Heat Warning issued March 20 at 5:35PM MST until March 22 at 8:00PM MST by NWS Flagstaff AZ

NWS Active Alerts report on Extreme Heat Warning issued March 20 at 5:35PM MST until March 22 at 8:00PM MST by NWS Flagstaff AZ.

Developing Major update Updated Mar 21, 2026, 12:35 AM UTC
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NWS Active Alerts: Extreme Heat Warning issued March 20 at 5:35PM MST until March 22 at 8:00PM MST by NWS Flagstaff AZ.

First seen Mar 20, 2026, 6:17 PM UTC Latest source Mar 21, 2026, 12:35 AM UTC