Moshannon State Forest, PA Tornado May 1985

A tornado moved one mile south of Penfield to seven miles north of Lock Haven.  Ten houses were destroyed or damaged. About 88,000 trees were destroyed in Pennsylvania State Forest land.  In Clinton County, this tornado also took down a large metal fire tower and at least one cabin.  Golf ball size hail fell near Avis.  This tornado carved a 75 mile long path of damage; at times this path was 1.5 miles wide.

Source: NCDC Storm Data: May 1985; Volume 27, Number 5

The scar from this tornado can still be seen in satellite imagery.  In this Bing map, you can see the scar extending from south of Hollywood, PA to northeast of Jersey Shore, PA.