All known tornadoes from 1950 to Present are plotted on the maps below. Click on a county name to see a detailed map of all known tornado tracks in that county. Please read the important disclaimer below concerning the plotting of historical tornadoes. This data is considered "unofficial". For "official" statistics, contact the National Climatic Data Center, NCDC.
|Mercer County||Venango County||Forest County||Clarion County||Jefferson County|
|Lawrence County||Butler County||Armstrong County||Indiana County||Beaver County|
|Allegheny County||Westmoreland County||Washington County||Fayette County||Greene County|
|Coshocton County||Muskingum County||Tuscarawas County||Guernsey County|
|Noble County||Belmont County||Harrison County||Carroll County|
|Jefferson County||Columbiana County||Monroe County|
|Hancock County||Brooke County||Ohio County||Marshall County||Wetzel County|
|Marion County||Monongalia County||Preston County||Tucker County|
*Disclaimer: These tracks are approximate. Some starting and stopping points are not exact.
Climatology compiled by Tim Axford
NWS Pittsburgh, PA