 Save even more with the Easy Rewards program at Staples. I'm Dave Doldine, WTOP Traffic. This simmering forecast from 7 News First Alert meteorologist Steve Rudin. Hot and humid as we move into the evening along with a severe thunderstorm watch until 10 o'clock. I do suspect parts of it will come down ahead of time. Looking at a line of strong thunderstorms just around dinner time.