State + disaster type
Tornado history in Pennsylvania
Pennsylvania has 15 county-level tornado declarations across 15 counties. Allegheny County leads with 1 declarations. Total tracked FEMA obligations for tornado events in this state: $0.
This page shows every Pennsylvania county in Pennsylvania that has at least one FEMA tornado declaration on record, ranked by how many times that hazard type triggered federal aid. Counties near the top of this list have recurring exposure to tornado events — useful context for anyone evaluating property risk, insurance needs, or emergency planning in the area.
For the full national view of tornado declarations across all states, see the tornado disaster type page. For all hazard types in Pennsylvania, see the Pennsylvania state page.
Tornado in Pennsylvania
Counties ranked by tornado declaration count
| # | County | Declarations | Tracked aid |
|---|---|---|---|
| 1 | Allegheny County | 1 | $0 |
| 2 | Armstrong County | 1 | $0 |
| 3 | Beaver County | 1 | $0 |
| 4 | Clearfield County | 1 | $0 |
| 5 | Crawford County | 1 | $0 |
| 6 | Erie County | 1 | $0 |
| 7 | Forest County | 1 | $0 |
| 8 | Indiana County | 1 | $0 |
| 9 | Lycoming County | 1 | $0 |
| 10 | McKean County | 1 | $0 |
| 11 | Mercer County | 1 | $0 |
| 12 | Northumberland County | 1 | $0 |
| 13 | Union County | 1 | $0 |
| 14 | Venango County | 1 | $0 |
| 15 | Westmoreland County | 1 | $0 |