Tornado Watch until 3A. Expect line of strong storms to pass through DFW between 4 and 8 A.M. Sunday. Sunday: Showers and thunderstorms, mainly before 1pm. Some storms could be severe, with heavy rain. High near 80. South wind 15 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.