At 5:50 p.m. on Wednesday, the National Weather Service released an updated tornado watch in effect until 8 p.m. for Westmoreland County.

A passenger captured a massive tornado from a plane window as her flight flew into Denver International Airport in Colorado. Video footage captured by Kristelle Nielsen on May 18 shows the plane descending as dark clouds cover the sky with a huge tornado circling at a distance.

Breaking: Sequoyah Quinton reports live sighting of a large tornado near Kiowa power plant. Caution advised in the area. Live updates.

The National Weather Service has issued a tornado watch for several counties in western Pennsylvania on Wednesday.

A tornado watch has been issued for all 13 counties in the Huntsville viewing area until 10:00 PM tonight.

The following counties are under the watch: Bureau, Christian, Cumberland, Edgar, Fulton, Knox, Macon, McDonough, Morgan, Piatt, Schuyler, Tazewell, Woodford, Cass, Clark, DeWitt, Effingham, Henry, Livingston, Marshall, McLean, Moultrie, Putnam, Shelby, Vermilion, Champaign, Coles, Douglas, Ford, Iroquois, Logan, Mason, Peoria, Stark, and Warren.

At 7:28 p.m. on Tuesday, the NWS Morristown TN issued an updated tornado watch in effect until Wednesday at 2 a.m. for Cherokee County.

The National Weather Service has issued a tornado warning for the eastern portion of Butler County, as well as a portion of Armstrong County. The tornado watch took effect at 4:33 p.m. Wednesday, May