Arizona Weather Force has issued a Severe Thunderstorm Watch, effective Sunday May the 4th be with you.
An upper level low will bring stronger lifting and instability to the northern half of the state. This includes Havasu and Phoenix, northward to the high country to Prescott and the Mogollon Rim.
Instability is high enough to warrant damaging winds and hail … along with isolated tornado dynamics …
Raiden Storm
Master General Meteorologist