From 2026-03-19T11:00:00-07:00 until 2026-03-22T20:00:00-07:00* WHERE...Portions of south central and southwest Arizona.
* WHEN...From Thursday morning through Sunday, March 22.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Afternoon high temperatures between 103 and
109 degrees.