Thursday is a First Alert 6 Weather Day with returning storm potential late this evening. The evening round will likely develop to the NW around 7PM and at this point we see the highest tornado concern and large hail

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.

A tornado watch issued earlier Wednesday evening for Rocky View County, including Airdrie and Crossfield, was lifted just before 8 p.m., according to Environment Canada. The watch had been issued at 5:25 p.

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.

Strong thunderstorms are expected to start firing up in the early evening Wednesday. And some storms could dump 2 to 3 inches of rain in one hour, forecasters say.

A tornado watch issued earlier Wednesday evening for Rocky View County, including Airdrie and Crossfield, was lifted just before 8 p.m., according to Environment Canada. The watch had been issued at 5:25 p.

In Bowie, Maryland, a breathtaking video of an ominous shelf cloud emerged on social media. Shelf clouds, which often appear along the leading edge of thunderstorms, form when cool air rushes out from a storm and forces the warm, moist air ahead of it to rise, creating a distinctive, rolling cloud formation, The Washington Post reported.

Environment and Climate Change Canada has issued a tornado watch for Cochrane and surrounding areas as conditions are favourable for the development of severe thunderstorms that could produce isolated tornadoes.

An updated tornado warning was released by the NWS Raleigh NC on Sunday at 6:58 p.m. in effect until 7:30 p.m. for Alamance and Orange counties.

The tornado warnings in Atlantic and Ocean counties in New Jersey are no longer in effect on Wednesday night. Earlier Wednesday, a tornado warning in New Castle County, Delaware, expired at around 9:15 p.m. A severe thunderstorm watch was in effect across much of the Philadelphia region for Wednesday evening.