A few showers and storms will start to fire up midday. But it's really later this afternoon and evening that storms will become a bit more widespread and heavier, especially off to the south. This moves across Delaware later tonight with heavy rain downpours triggered even further north up toward the city.

Tuesday has been a hot and muggy one for the Philadelphia area with high temperatures in the 90s and the oppressive heat has given way to a round of scattered storms, some of which have turned severe in some places.