Harrison County, Iowa: hazard risk
FEMA rates Harrison County's overall risk Very Low (score 31.3 of 100, higher than 31% of rated U.S. counties). Its storm record holds 698 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 |
|---|---|---|---|
| Drought | Relatively Moderate | 86.4 | $1.3M |
| Hail | Relatively Moderate | 86.4 | $1.3M |
| Strong Wind | Relatively Moderate | 55.9 | $627K |
| Landslide | Relatively Low | 84.6 | $27K |
| Tornado | Relatively Low | 60.1 | $1.7M |
| Ice Storm | Relatively Low | 53.7 | $96K |
| Riverine Flooding | Relatively Low | 37.0 | $4.2M |
| Winter Weather | Relatively Low | 36.0 | $37K |
| Cold Wave | Relatively Low | 29.1 | $379K |
| Wildfire | Very Low | 59.8 | $80K |
| Heat Wave | Very Low | 19.4 | $56K |
| Lightning | Very Low | 16.4 | $55K |
| Earthquake | Very Low | 11.8 | $12K |
| Hurricane | No Rating | 0.0 | $0 |
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. |
|---|---|---|---|---|---|
| Hail | 218 | 0 | $171K | 15th of 99 | 620th of 3,080 |
| Severe thunderstorm wind | 210 | 0 | $2.2M | 36th of 99 | 1494th of 3,080 |
| Winter storms | 90 | 0 | $1.7M | 82nd of 99 | 1202nd of 3,077 |
| Extreme cold | 50 | 0 | – | 12th of 99 | 293rd of 3,076 |
| Tornadoes | 34 | 2 | $10M | 76th of 99 | 1178th of 3,080 |
| Floods | 31 | 0 | $111M | 93rd of 99 | 1759th of 3,080 |
| High wind and dust storms | 24 | 0 | – | 71st of 99 | 1251st of 3,080 |
| Heat | 21 | 0 | – | 17th of 99 | 797th of 3,076 |
| Drought | 10 | 0 | – | 93rd of 99 | 1832nd of 3,063 |
| Heavy rain | 9 | 0 | – | 67th of 99 | 787th of 3,080 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Harrison County record: every hazard by year and month, the deadliest events and FEMA's declarations.