Ohio's tornado season is from March through May, according to Cassady. That doesn't mean tornadoes only occur in those months ...

Number of tornadoes recorded that day in Ohio, Pennsylvania, New York and Ontario. 10: Duration of tornado outbreak that day ...

The outbreak produced Pennsylvania's first and only F5 tornado, a violent twister that came out of eastern Ohio and crossed ...

News has collected several never-before-seen photos of the aftermath of the tornado. We've included those photos with ...

This weekend, the 40th anniversary of the pounding tornadoes that walloped the Mahoning and Shenango valleys, conjures up a wide swath ...

Keystone State, including the first and only F5. This WTAE archive video shows some of the widespread damage in Pennsylvania.

A warm spring day turned to terror for residents of Pennsylvania, Ohio and southern Ontario 40 years ago this weekend.

One of the deadliest storms in Pennsylvania's history impacted Beaver County, claiming the lives of three residents and ...

According to data from the National Oceanic and Atmospheric Administration, Fairfield County has only been hit with F0 and F1 ...

Rated an F5 with estimated wind speeds of up to 318 mph, the tornado was responsible for 18 deaths and 310 injuries.

Mississippi and lower Ohio valleys through the Southeast once again Tuesday and into early Wednesday morning, causing damage ...

A tornado outbreak that swept through the Ohio Valley Friday night left multiple people dead and several seriously injured in ...