 Highs in the 90s, heat index values pushing 100 plus. Storms erupt from 4 p.m. to 11 p.m., some with dangerous lightning, dusty winds and downpours, as well as hail. Behind that, though, cooler and less humid into the upper 80s on Thursday and Friday. I'm WTOP's Steve Prince of Valley. 88 now in Alexandria, heading down to the 70s tonight. You're listening to WTOP, Washington's news, traffic and weather station. WTOP News. Facts Matter.