Tornado Risk in Connecticut
All Connecticut counties ranked by FEMA National Risk Index tornado score
Tornado risk — violently rotating columns of air capable of catastrophic local damage — is rated for 9 of 9 Connecticut counties in FEMA's National Risk Index. Capitol Planning Region carries the state's highest tornado score at 90.5, with $8M in expected annual tornado losses.
1 Connecticut county is rated High or Very High for tornado, and expected annual losses from tornado total roughly $23M 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 | Capitol Planning Region | High | 0.33 / yr | $8M | |
| 2 | South Central Connecticut Planning Region | Medium | 0.17 / yr | $3M | |
| 3 | Naugatuck Valley Planning Region | Medium | 0.13 / yr | $3M | |
| 4 | Western Connecticut Planning Region | Medium | 0.20 / yr | $3M | |
| 5 | Southeastern Connecticut Planning Region | Low | 0.16 / yr | $2M | |
| 6 | Lower Connecticut River Valley Planning Region | Low | 0.14 / yr | $1M | |
| 7 | Northwest Hills Planning Region | Low | 0.25 / yr | $1M | |
| 8 | Greater Bridgeport Planning Region | Low | 0.07 / yr | $882K | |
| 9 | Northeastern Connecticut Planning Region | Low | 0.15 / yr | $660K |
9 Connecticut counties with measurable tornado risk. See the national tornado ranking or all Connecticut counties by overall risk.
Frequently Asked Questions
Which Connecticut county has the highest tornado risk?
Capitol Planning Region has the highest FEMA tornado risk score in Connecticut at 90.5 (High), with $8M in expected annual losses and about 0.33 events per year.
How many Connecticut counties face significant tornado risk?
9 Connecticut counties record measurable tornado risk in FEMA's National Risk Index; 1 of them are rated High or Very High.