A large dust storm rolling through the Phoenix area has obscured visibility and created dangerous driving conditions Tuesday evening. The storm is traveling northwest at 30 miles per hour, according to the National Weather Service. It has already gone through much of the southeast Valley after originating near Tucson. Phoenix Sky Harbor International Airport had to shut down about an hour, causing some flight delays. In Chandler, winds toppled nine trees at the intersection of Chandler and Arizona avenues. Police officers used chainsaws and a tow truck to clear the debris. The storm also caused power outages in some areas. In Tempe, officers were directing traffic at intersections in blackout areas, according to police Lt. Scott Smith. The storm brought down some in live wires in Tempe, and one started a fire near Rural and Southern, Smith said. The blaze was quickly extinguished. In Chandler, winds toppled nine trees at the intersection of Chandler and Arizona avenues. Police officers used chainsaws and a tow truck to clear the debris. Reporter Laurie Merrill contributed to this article.





















