Heat Wave Risk in Delaware
All Delaware counties ranked by FEMA National Risk Index heat wave score
Heat Wave risk — prolonged periods of extreme heat that threaten health and infrastructure — is rated for 3 of 3 Delaware counties in FEMA's National Risk Index. New Castle County carries the state's highest heat wave score at 95.3, with $7M in expected annual heat wave losses.
No Delaware county reaches the High band for heat wave, and expected annual losses from heat wave total roughly $12M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Heat Wave
| # | County | Heat Wave Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | New Castle County | Medium | 11.16 / yr | $7M | |
| 2 | Sussex County | Medium | 5.03 / yr | $2M | |
| 3 | Kent County | Medium | 5.25 / yr | $3M |
3 Delaware counties with measurable heat wave risk. See the national heat wave ranking or all Delaware counties by overall risk.
Frequently Asked Questions
Which Delaware county has the highest heat wave risk?
New Castle County has the highest FEMA heat wave risk score in Delaware at 95.3 (Medium), with $7M in expected annual losses and about 11.16 events per year.
How many Delaware counties face significant heat wave risk?
3 Delaware counties record measurable heat wave risk in FEMA's National Risk Index; 0 of them are rated High or Very High.