Severe thunderstorms are moving across the Valley from the west Friday afternoon, with the National Weather Service putting a thunderstorm watch and a heat advisory remaining in place after two separate thunderstorm warnings expired.

At 11:58 a.m. on Saturday, the National Weather Service released a severe thunderstorm warning in effect until 12:45 p.m. for Blair, Cambria, Centre, Clearfield and Huntingdon counties.

A Thursday evening storm system that briefly included a tornado warning southwest of Ottawa is on its way out of the region.

New Jersey homes and businesses are without power. See latest updates from JCP&L, PSE&G, Atlantic City Electric and Rockland utilities.

A severe thunderstorm warning was released by the National Weather Service on Friday at 3:47 p.m. in effect until 4:30 p.m. for Armstrong, Indiana and Westmoreland counties.

A Flash Flood Warning is in effect for the Chicago area as severe storms roll through, which also caused problems at O'Hare and Midway airports.