Officials said Saturday that the EF-1 tornado touched down at about 5:25 p.m. Friday near Ligonier in Westmoreland County about 50 miles southwest of Pittsburgh.
They said the storm was packing maximum winds of 105 mph and traveled a path up to 300 yards wide for about eight miles.
The weather service says preliminary information is that 27 structures, 14 mobile homes and two businesses were damaged. High winds tore the roof off one home. No injuries were reported.
Forecasters said the tornado is the 37th to affect Westmoreland County since 1800 - which ties the county with Crawford County for having had the most tornadoes in Pennsylvania.
