Carroll County, Iowa: hazard risk
FEMA rates Carroll County's overall risk Relatively Low (score 57.6 of 100, higher than 57% of rated U.S. counties); 2 of its 14 hazards are rated Relatively High or Very High, led by hail, drought. Its storm record holds 691 events since 1950.
FEMA's rating for each hazard
These are FEMA's county-wide model ratings and this county's storm record. They are not an assessment of any property, address or building, and not insurance advice: a property's risk depends on its own elevation, construction and location.
FEMA gives each hazard its own rating, and a rating does not follow the score from one hazard to the next: a hazard with a higher score can carry a lower rating than another. The table sorts by FEMA's rating, then by score (0 to 100, the county against every other county for that hazard).
| Hazard | Risk rating | Score | Expected annual loss |
|---|---|---|---|
| Hail | Relatively High | 96.9 | $4.7M |
| Drought | Relatively High | 94.7 | $2.9M |
| Tornado | Relatively Moderate | 85.5 | $6.2M |
| Strong Wind | Relatively Moderate | 83.7 | $1.7M |
| Ice Storm | Relatively Moderate | 64.6 | $189K |
| Cold Wave | Relatively Low | 59.2 | $1.6M |
| Winter Weather | Relatively Low | 53.4 | $83K |
| Riverine Flooding | Relatively Low | 37.5 | $5.1M |
| Landslide | Very Low | 44.9 | $1K |
| Wildfire | Very Low | 28.5 | $15K |
| Lightning | Very Low | 21.9 | $87K |
| Heat Wave | Very Low | 20.4 | $74K |
| Earthquake | Very Low | 19.8 | $32K |
| Hurricane | Very Low | 19.4 | $6K |
Source: FEMA National Risk Index, December 2025 release. A model of future loss, not a count of past events. FEMA's National Risk Index map.
What the record holds
| Hazard | Records | Deaths | Damage | Rank in state | Rank in U.S. |
|---|---|---|---|---|---|
| Severe thunderstorm wind | 201 | 0 | $41M | 46th of 99 | 1637th of 3,080 |
| Hail | 143 | 0 | $1.8M | 49th of 99 | 1027th of 3,080 |
| Winter storms | 80 | 0 | $7.3M | 75th of 99 | 1101st of 3,077 |
| Floods | 61 | 0 | $34M | 48th of 99 | 841st of 3,080 |
| High wind and dust storms | 48 | 0 | $2.0M | 10th of 99 | 436th of 3,080 |
| Heavy rain | 42 | 0 | $14K | 38th of 99 | 217th of 3,080 |
| Drought | 37 | 0 | $148M | 21st of 99 | 691st of 3,063 |
| Tornadoes | 34 | 0 | $12M | 48th of 99 | 700th of 3,080 |
| Extreme cold | 27 | 0 | $5.9M | 50th of 99 | 523rd of 3,076 |
| Lightning | 7 | 0 | $698K | 12th of 99 | 583rd of 3,080 |
| Heat | 4 | 0 | $177K | 65th of 99 | 1711th of 3,076 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Carroll County record: every hazard by year and month, the deadliest events and FEMA's declarations.