Clarion County
Pennsylvania — Natural Disaster Risk Assessment
Very LowComposite Risk Score
National percentile: 30th
Clarion County faces very low composite natural disaster risk (NRI Risk Index score 30.0, 30th national percentile), driven primarily by lightning and landslide exposure. Expected annual loss across all 18 hazard types is $9M.
Source: FEMA National Risk Index v1.20 · Updated December 2025
Top Hazards
All 18 Hazard Risks
| Lightning | Medium | 38.45 / yr | $670K |
| Landslide | Low | 0.63 / yr | $5K |
| Hurricane | Low | 0.03 / yr | $266K |
| Riverine Flood | Low | 1.54 / yr | $6M |
| Strong Wind | Low | 2.26 / yr | $415K |
| Avalanche | Very Low | 0.01 / yr | $245 |
| Cold Wave | Low | 3.84 / yr | $479K |
| Earthquake | Very Low | 0.00 / yr | $82K |
| Winter Weather | Low | 15.74 / yr | $28K |
| Tornado | Low | 0.22 / yr | $414K |
| Ice Storm | Very Low | 0.42 / yr | $15K |
| Wildfire | Very Low | 0.00 / yr | $5K |
| Heat Wave | Very Low | 0.63 / yr | $23K |
| Hail | Very Low | 2.55 / yr | $35K |
| Coastal Flood | Very Low | 0.00 / yr | $0 |
| Drought | Very Low | 0.00 / yr | $0 |
| Tsunami | Very Low | 0.00 / yr | $0 |
| Volcanic Activity | Very Low | 0.00 / yr | $0 |
Frequently Asked Questions
What is the overall natural disaster risk for Clarion County?
Clarion County has a composite FEMA National Risk Index score of 30.0 out of 100, placing it in the Very Low category and the 30th national percentile. This combines Expected Annual Loss, Social Vulnerability, and Community Resilience across 18 hazard types.
What are the top natural hazards in Clarion County?
The three highest-rated hazards are Lightning (Medium, $670K EAL), Landslide (Low, $5K EAL), Hurricane (Low, $266K EAL). These account for most of the county's expected annual losses.
How does Clarion County compare to other Pennsylvania counties?
Clarion County ranks #61 of 67 Pennsylvania counties for overall natural disaster risk, with a very low rating.
What does Expected Annual Loss (EAL) mean?
EAL is FEMA's estimate of average annual dollar losses from natural hazards, calculated from historical event data and exposure models. Clarion County's $9M EAL is a statistical average, not a guarantee for any specific year or address.