 A thunderstorm watch has now been posted until 10 o'clock along with an excessive heat warning until 8 p.m. We'll see showers and thunderstorms develop along a line that's going to have the potential to become strong to severe. Most of the storms across the metro area will happen during the dinnertime hour until about 10 o'clock this evening. That's when most should be gone. Temperatures will stay very warm and humid overnight. Tomorrow we're in the upper 80s to middle 90s. Chance for a few showers lower to middle 80s on Friday. I'm 7 News meteorologist Steve Rudin in the First Alert Weather Center.