A tornado warning is in effect until 9:15 p.m. in New Castle County, Delaware.

Rounds of violent storms that arrived during the peak afternoon commuting period Tuesday set off four tornado warnings, took down trees, and flooded roadways across the region — with a sequel possible later in the week.

Severe storms dumped a lot of rain on the Philadelphia region Wednesday night, prompting tornado warnings and flash floods. Some people had to be rescued from their cars.