Moisture will increase across much of southern Arizona with high terrain storms and lower desert gusty, outflow winds and dust Tuesday afternoon/evening. The best chances for showers and thunderstorms will occur Wednesday with a 20-40% chance across south-central Arizona. The main impacts with any thunderstorm activity will be strong gusty winds, lightning, and blowing dust. Chances for showers and thunderstorms will linger into Thursday, but drier air surging into the area should end chances Thursday night into Friday.