Tornado Risk in Delaware
All Delaware counties ranked by FEMA National Risk Index tornado score
Tornado risk — violently rotating columns of air capable of catastrophic local damage — is rated for 3 of 3 Delaware counties in FEMA's National Risk Index. New Castle County carries the state's highest tornado score at 88.1, with $7M in expected annual tornado losses.
No Delaware county reaches the High band for tornado, and expected annual losses from tornado total roughly $11M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Tornado
| # | County | Tornado Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | New Castle County | Medium | 0.26 / yr | $7M | |
| 2 | Kent County | Medium | 0.35 / yr | $3M | |
| 3 | Sussex County | Low | 0.34 / yr | $2M |
3 Delaware counties with measurable tornado risk. See the national tornado ranking or all Delaware counties by overall risk.
Frequently Asked Questions
Which Delaware county has the highest tornado risk?
New Castle County has the highest FEMA tornado risk score in Delaware at 88.1 (Medium), with $7M in expected annual losses and about 0.26 events per year.
How many Delaware counties face significant tornado risk?
3 Delaware counties record measurable tornado risk in FEMA's National Risk Index; 0 of them are rated High or Very High.