Pennsylvania hail risk
Philadelphia County has the highest hail risk in Pennsylvania, scoring 95.1 out of 100 — rated "Relatively High" by FEMA's National Risk Index. NOAA has recorded 1,308 hail events across Pennsylvania over the past decade.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Philadelphia County | 95.1 | Relatively High | 16 |
| 2 | Westmoreland County | 85.8 | Relatively Moderate | 67 |
| 3 | Lancaster County | 83.4 | Relatively Moderate | 33 |
| 4 | Washington County | 82.7 | Relatively Moderate | 63 |
| 5 | Mercer County | 75.9 | Relatively Moderate | 36 |
| 6 | Fayette County | 74.7 | Relatively Moderate | 24 |
| 7 | Beaver County | 73.7 | Relatively Moderate | 30 |
| 8 | Cambria County | 72 | Relatively Low | 7 |
| 9 | Berks County | 67.7 | Relatively Low | 61 |
| 10 | Greene County | 62.1 | Relatively Low | 9 |
| 11 | Somerset County | 62.1 | Relatively Low | 1 |
| 12 | Chester County | 61.2 | Relatively Low | 24 |
| 13 | Franklin County | 59.7 | Relatively Low | 14 |
| 14 | Crawford County | 58.1 | Relatively Low | 26 |
| 15 | Luzerne County | 53 | Relatively Low | 22 |
| 16 | Indiana County | 52.4 | Relatively Low | 40 |
| 17 | Erie County | 51.9 | Relatively Low | 26 |
| 18 | Lawrence County | 49.7 | Relatively Low | 44 |
| 19 | Blair County | 44.2 | Relatively Low | 7 |
| 20 | Montgomery County | 42.7 | Relatively Low | 60 |
| 21 | Bucks County | 40.1 | Relatively Low | 35 |
| 22 | Lehigh County | 38.8 | Relatively Low | 38 |
| 23 | Lebanon County | 36.9 | Relatively Low | 12 |
| 24 | Armstrong County | 36.4 | Relatively Low | 32 |
| 25 | Bedford County | 33.4 | Very Low | 3 |
| 26 | Adams County | 32.7 | Very Low | 10 |
| 27 | Allegheny County | 31.3 | Very Low | 143 |
| 28 | Lackawanna County | 27.2 | Very Low | 20 |
| 29 | Northampton County | 26.7 | Very Low | 21 |
| 30 | Butler County | 26.2 | Very Low | 80 |
| 31 | Centre County | 26 | Very Low | 20 |
| 32 | Mifflin County | 25 | Very Low | 4 |
| 33 | Dauphin County | 23.7 | Very Low | 18 |
| 34 | York County | 23.2 | Very Low | 28 |
| 35 | Bradford County | 19.7 | Very Low | 12 |
| 36 | Huntingdon County | 19.5 | Very Low | 6 |
| 37 | Northumberland County | 19.5 | Very Low | 8 |
| 38 | Wayne County | 19 | Very Low | 4 |
| 39 | Clearfield County | 18.3 | Very Low | 5 |
| 40 | Schuylkill County | 18.2 | Very Low | 6 |
| 41 | Fulton County | 17.5 | Very Low | 6 |
| 42 | Jefferson County | 17.4 | Very Low | 29 |
| 43 | Lycoming County | 17 | Very Low | 8 |
| 44 | Monroe County | 16.7 | Very Low | 4 |
| 45 | Venango County | 16.3 | Very Low | 14 |
| 46 | Susquehanna County | 15.6 | Very Low | 14 |
| 47 | Carbon County | 15.5 | Very Low | 6 |
| 48 | Juniata County | 15 | Very Low | 5 |
| 49 | Cumberland County | 14.3 | Very Low | 5 |
| 50 | Tioga County | 13.4 | Very Low | 4 |
| 51 | Delaware County | 13.3 | Very Low | 26 |
| 52 | Columbia County | 13 | Very Low | 4 |
| 53 | Clarion County | 12.1 | Very Low | 25 |
| 54 | Snyder County | 11.5 | Very Low | 8 |
| 55 | Pike County | 10.8 | Very Low | 4 |
| 56 | Union County | 9.8 | Very Low | 3 |
| 57 | McKean County | 7.7 | Very Low | 9 |
| 58 | Warren County | 7.7 | Very Low | 6 |
| 59 | Clinton County | 6.7 | Very Low | 7 |
| 60 | Elk County | 5.9 | Very Low | 3 |
| 61 | Montour County | 5.3 | Very Low | 1 |
| 62 | Wyoming County | 5.1 | Very Low | 5 |
| 63 | Potter County | 4.9 | Very Low | 3 |
| 64 | Perry County | 3.7 | Very Low | 5 |
| 65 | Forest County | 3.4 | Very Low | 5 |
| 66 | Sullivan County | 3.4 | Very Low | 3 |
| 67 | Cameron County | 1.9 | Very Low | 1 |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Hail risk nationally:
Other hazard risks in Pennsylvania:
Frequently asked questions
What is the highest hail risk county in Pennsylvania?
Philadelphia County, PA has the highest hail risk in Pennsylvania, with a FEMA National Risk Index score of 95.1 out of 100 (rated "Relatively High").
What causes hail risk in Pennsylvania?
Hail risk reflects expected annual losses from damaging hailstones to structures, vehicles, and crops. High scores cluster in the central plains and Front Range — a corridor sometimes called "Hail Alley" — where large-diameter hail is most frequent. Hail causes over $10 billion in US property damage in active years, much of it to roofs, vehicles, and crops.