 And this is blocking the left lane and right lane, either side, alternating mobile closures. The WTOP Traffic Center is presented by Window Nation. Buy two windows, get two free. Visit windownation.com. I'm Ken Berger, WTOP Traffic. Next to Veronica Johnson, 7 News First Alert Chief Meteorologist. And partly sunny skies. There is a chance for a little pop-up thunderstorm, especially out in western Maryland. Temperatures will drop through the 90s into the 80s. And by morning, 75 to 80 degrees. Your high temperature Tuesday afternoon.