Connecticut hail risk
Capitol Planning Region has the highest hail risk in Connecticut, scoring 81.6 out of 100 — rated "Relatively Moderate" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Capitol Planning Region | 81.6 | Relatively Moderate | 0 |
| 2 | Naugatuck Valley Planning Region | 54.4 | Relatively Low | 0 |
| 3 | Southeastern Connecticut Planning Region | 45.2 | Relatively Low | 0 |
| 4 | Northwest Hills Planning Region | 44.5 | Relatively Low | 0 |
| 5 | Western Connecticut Planning Region | 41.4 | Relatively Low | 0 |
| 6 | South Central Connecticut Planning Region | 37.1 | Relatively Low | 0 |
| 7 | Greater Bridgeport Planning Region | 21.8 | Very Low | 0 |
| 8 | Northeastern Connecticut Planning Region | 12.4 | Very Low | 0 |
| 9 | Lower Connecticut River Valley Planning Region | 11.1 | Very Low | 0 |
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 Connecticut:
Frequently asked questions
What is the highest hail risk county in Connecticut?
Capitol Planning Region, CT has the highest hail risk in Connecticut, with a FEMA National Risk Index score of 81.6 out of 100 (rated "Relatively Moderate").
What causes hail risk in Connecticut?
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.