PHOENIX - With Arizona's active monsoon season comes dangerous walls of dust over the state, clouding drivers' vision and blanketing cars and homes.The Arizona Department of Transportation says to stop driving and turn off your lights if the dust becomes too thick to see safely.On Tuesday, parts of Arizona, including the Phoenix area experienced a wall of dust moving in and high winds.Wind gusts up to 50 mph are being felt in Chandler, Queen Creek and Mesa on Tuesday night.There are isolated thunderstorms over the central part of the state, the National Weather Service says, but will die out after about two hours.Dust storm over downtown Phoenix "Most Valley residents know how quickly and furiously storms can move in and out, bringing.