Delaware hail risk
Sussex County has the highest hail risk in Delaware, scoring 60.4 out of 100 — rated "Relatively Low" by FEMA's National Risk Index. Recorded hail events across Delaware have decreased 15% over the past five years compared to the prior five-year period.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | Sussex County | 60.4 | Relatively Low | 17 |
| 2 | Kent County | 45.9 | Relatively Low | 12 |
| 3 | New Castle County | 24.2 | Very Low | 19 |
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 Delaware:
Frequently asked questions
What is the highest hail risk county in Delaware?
Sussex County, DE has the highest hail risk in Delaware, with a FEMA National Risk Index score of 60.4 out of 100 (rated "Relatively Low").
What causes hail risk in Delaware?
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.