Delaware strong wind risk
New Castle County has the highest strong wind risk in Delaware, scoring 88.3 out of 100 — rated "Relatively High" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
NOAA events 2016–2026 |
|---|---|---|---|---|
| 1 | New Castle County | 88.3 | Relatively High | 0 |
| 2 | Sussex County | 85.6 | Relatively High | 0 |
| 3 | Kent County | 60 | Relatively Moderate | 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.
Strong Wind risk nationally:
Other hazard risks in Delaware:
Frequently asked questions
What is the highest strong wind risk county in Delaware?
New Castle County, DE has the highest strong wind risk in Delaware, with a FEMA National Risk Index score of 88.3 out of 100 (rated "Relatively High").
What causes strong wind risk in Delaware?
Strong wind risk covers non-convective, non-tropical sustained high winds — including derechos and general high-wind events, but excluding tornado and hurricane winds. High scores appear in mountain passes, coastal headlands, and open plains where topography amplifies wind speeds. Damage concentrates on utility infrastructure, trees, and lightweight structures.