Severe Thunderstorm Warning Severe Thunderstorm Warning issued August 9 at 9:08PM MST until August 9 at 10:00PM MST by NWS Tucson AZ Effective 9:08 PM MST, Sun Aug 9 through 10:00 PM MST, Sun Aug 9 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