"The hazards associated with these thunderstorms are frequent lightning, severe thunderstorm wind gusts, hail, and several tornadoes," National Weather Service warns

The main threat for severe weather is flooding, and a flood watch remains in effect. One to two inches of rain is expected, with localized areas of up to four inches. Areas that receive higher totals may experience flash flooding. Urban, low-lying, and poor drainage areas are the most likely areas to see flash flooding.

A round of severe weather prompted several severe thunderstorm and tornado watches and warnings across the Pittsburgh area on Sunday afternoon. The last tornado warnings in the Pittsburgh viewing area,