Strong Wind Risk in Idaho
All Idaho counties ranked by FEMA National Risk Index strong wind score
Strong Wind risk — damaging straight-line winds outside of tornadoes and hurricanes — is rated for 44 of 44 Idaho counties in FEMA's National Risk Index. Ada County carries the state's highest strong wind score at 91.8, with $4M in expected annual strong wind losses.
1 Idaho county is rated High or Very High for strong wind, and expected annual losses from strong wind total roughly $11M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Strong Wind
| # | County | Strong Wind Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Ada County | High | 0.33 / yr | $4M | |
| 2 | Canyon County | Medium | 0.34 / yr | $1M | |
| 3 | Elmore County | Low | 0.32 / yr | $688K | |
| 4 | Bonneville County | Low | 0.76 / yr | $612K | |
| 5 | Kootenai County | Low | 0.24 / yr | $449K | |
| 6 | Twin Falls County | Low | 0.31 / yr | $414K | |
| 7 | Bingham County | Low | 0.93 / yr | $322K | |
| 8 | Gem County | Low | 0.32 / yr | $233K | |
| 9 | Boise County | Low | 0.29 / yr | $225K | |
| 10 | Cassia County | Low | 0.51 / yr | $244K | |
| 11 | Washington County | Low | 0.23 / yr | $151K | |
| 12 | Blaine County | Low | 0.53 / yr | $226K | |
| 13 | Bonner County | Low | 0.20 / yr | $176K | |
| 14 | Jerome County | Low | 0.43 / yr | $128K | |
| 15 | Madison County | Low | 0.69 / yr | $187K | |
| 16 | Latah County | Low | 0.24 / yr | $207K | |
| 17 | Minidoka County | Low | 0.68 / yr | $159K | |
| 18 | Custer County | Very Low | 0.25 / yr | $82K | |
| 19 | Gooding County | Very Low | 0.38 / yr | $110K | |
| 20 | Payette County | Very Low | 0.32 / yr | $137K | |
| 21 | Bannock County | Very Low | 0.75 / yr | $123K | |
| 22 | Jefferson County | Very Low | 0.90 / yr | $133K | |
| 23 | Owyhee County | Very Low | 0.19 / yr | $49K | |
| 24 | Lincoln County | Very Low | 0.52 / yr | $68K | |
| 25 | Franklin County | Very Low | 0.58 / yr | $104K | |
| 26 | Bear Lake County | Very Low | 0.40 / yr | $101K | |
| 27 | Power County | Very Low | 0.82 / yr | $67K | |
| 28 | Nez Perce County | Very Low | 0.19 / yr | $84K | |
| 29 | Fremont County | Very Low | 0.49 / yr | $78K | |
| 30 | Benewah County | Very Low | 0.26 / yr | $49K | |
| 31 | Butte County | Very Low | 0.76 / yr | $51K | |
| 32 | Valley County | Very Low | 0.14 / yr | $52K | |
| 33 | Idaho County | Very Low | 0.15 / yr | $35K | |
| 34 | Oneida County | Very Low | 0.69 / yr | $57K | |
| 35 | Shoshone County | Very Low | 0.20 / yr | $32K | |
| 36 | Caribou County | Very Low | 0.63 / yr | $47K | |
| 37 | Boundary County | Very Low | 0.12 / yr | $28K | |
| 38 | Teton County | Very Low | 0.45 / yr | $43K | |
| 39 | Lemhi County | Very Low | 0.20 / yr | $25K | |
| 40 | Clearwater County | Very Low | 0.20 / yr | $19K | |
| 41 | Adams County | Very Low | 0.14 / yr | $11K | |
| 42 | Lewis County | Very Low | 0.19 / yr | $11K | |
| 43 | Camas County | Very Low | 0.29 / yr | $9K | |
| 44 | Clark County | Very Low | 0.62 / yr | $10K |
44 Idaho counties with measurable strong wind risk. See the national strong wind ranking or all Idaho counties by overall risk.
Frequently Asked Questions
Which Idaho county has the highest strong wind risk?
Ada County has the highest FEMA strong wind risk score in Idaho at 91.8 (High), with $4M in expected annual losses and about 0.33 events per year.
How many Idaho counties face significant strong wind risk?
44 Idaho counties record measurable strong wind risk in FEMA's National Risk Index; 1 of them are rated High or Very High.