 Severe thunderstorm threat has ended. Maybe a leftover shower or storm before midnight. Otherwise, warm and muggy with patchy fog. On Wednesday, Heat Advisory posted also a storm alert. So patchy fog in the morning, hot and humid. Temperatures mid-90s, feeling like 100-plus. Late-day storms from 4 to 11 o'clock. Behind that cold front, though, cooler and less humid on Thursday and Friday. Highs in the upper 80s, maybe a stray shower Thursday. I'm WTOP's Steve Prince of Alley.