 I'm Dave Doldine, WTOP Traffic. Let's go to the P.J. Fitzpatrick Home Improvement Weather Desk for your home's windows. Trust P.J. Fitzpatrick. On to 7 News First Alert Meteorologist Steve Rudin. A severe thunderstorm watch for the entire WTOP listening area. On top of that, an excessive heat warning for the metro in southern Maryland and a heat advisory elsewhere, both until 8 p.m. Watching a line of strong to severe storms that will likely impact the DMV moving through dinnertime into evening tomorrow.