An updated tornado warning was issued by the National Weather Service on Tuesday at 5:52 p.m. in effect until 6:30 p.m. for Bucks, Montgomery and Philadelphia counties.

People in the warning area are urged to seek immediate shelter inside a sturdy building and to stay away from windows in case a tornado touches down.

The stark warning about the threat of a tornado concerns Washington DC, and the surrounding areas, such as the state of Pennsylvania and its large cities like Philadelphia

A tornado warning issued for Bucks, Montgomery, Chester, and Delaware counties, and Philadelphia has expired. No tornados have been confirmed to have touched down as of Tuesday afternoon.

On Tuesday at 5:19 p.m. the National Weather Service released a tornado warning in effect until 5:45 p.m. for Bucks County.

Flood waters are subsiding after Wednesday's rain, but there are more storm chances in the Philly region on Thursday.

This time-lapse video from our Society Hill Sky 6 camera shows the storm that hit Philadelphia on Tuesday evening.