Heat Wave Risk in Connecticut
All Connecticut 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 9 of 9 Connecticut counties in FEMA's National Risk Index. Capitol Planning Region carries the state's highest heat wave score at 96.4, with $9M in expected annual heat wave losses.
No Connecticut county reaches the High band for heat wave, and expected annual losses from heat wave total roughly $18M 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 | Capitol Planning Region | Medium | 6.67 / yr | $9M | |
| 2 | South Central Connecticut Planning Region | Medium | 5.01 / yr | $2M | |
| 3 | Western Connecticut Planning Region | Medium | 5.47 / yr | $2M | |
| 4 | Naugatuck Valley Planning Region | Medium | 5.48 / yr | $2M | |
| 5 | Greater Bridgeport Planning Region | Low | 5.55 / yr | $1M | |
| 6 | Southeastern Connecticut Planning Region | Low | 4.46 / yr | $1M | |
| 7 | Northeastern Connecticut Planning Region | Low | 5.98 / yr | $529K | |
| 8 | Lower Connecticut River Valley Planning Region | Low | 4.90 / yr | $311K | |
| 9 | Northwest Hills Planning Region | Very Low | 4.39 / yr | $184K |
9 Connecticut counties with measurable heat wave risk. See the national heat wave ranking or all Connecticut counties by overall risk.
Frequently Asked Questions
Which Connecticut county has the highest heat wave risk?
Capitol Planning Region has the highest FEMA heat wave risk score in Connecticut at 96.4 (Medium), with $9M in expected annual losses and about 6.67 events per year.
How many Connecticut counties face significant heat wave risk?
9 Connecticut counties record measurable heat wave risk in FEMA's National Risk Index; 0 of them are rated High or Very High.