Dust Storm Warning Dust Storm Warning issued August 23 at 5:40PM MST until August 23 at 6:45PM MST by NWS Tucson AZ Effective 5:40 PM MST, Sun Aug 23 through 6:45 PM MST, Sun Aug 23 Motorists should not drive into a dust storm. PULL ASIDE STAY ALIVE! https://www.weather.gov/twc/ #Dust #DustStormWarning