PHILADELPHIA (AP) - The National Weather Service has confirmed three tornadoes spawned by strong storms Thursday in Pennsylvania.

Forecasters say a category EF-1 tornado with winds of at least 105 mph struck near Reading, ripping the roof off an elementary school and tearing through classrooms.

An EF-1 tornado also touched down Thursday near Montoursville and an EF-0 tornado touched down in Selinsgrove, both in central Pennsylvania.

An EF-0 tornado has winds of 65-85 mph. An EF-1 tornado has winds of 86-110 mph.

Forecasters say the tornado near Montoursville snapped and uprooted trees and caused damage to outbuildings.

They say the Selinsgrove twister tracked along a creek and caused damage to trees and crops before lifting when it reached the Susquehanna River.