Severe Thunderstorm Warning Severe Thunderstorm Warning issued August 5 at 8:50PM MST until August 5 at 9:30PM MST by NWS Tucson AZ Effective 8:50 PM MST, Wed Aug 5 through 9:30 PM MST, Wed Aug 5 Seek shelter inside a well-built structure and stay away from windows. This storm is capable of producing damaging winds and large hail. https://www.weather.gov/twc/ #Thunderstorm #SevereThunderstormWarning