Warren County, Iowa: hazard risk
FEMA rates Warren County's overall risk Very Low (score 36.1 of 100, higher than 36% of rated U.S. counties); 1 of its 14 hazards are rated Relatively High or Very High, led by drought. Its storm record holds 1,065 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 High | 91.7 | $3.2M |
| Tornado | Relatively Moderate | 65.9 | $3.6M |
| Lightning | Relatively Moderate | 60.5 | $560K |
| Strong Wind | Relatively Moderate | 55.0 | $1.0M |
| Landslide | Relatively Low | 72.4 | $12K |
| Heat Wave | Relatively Low | 65.5 | $1.2M |
| Ice Storm | Relatively Low | 51.3 | $148K |
| Hail | Relatively Low | 49.2 | $416K |
| Cold Wave | Relatively Low | 47.6 | $1.4M |
| Riverine Flooding | Relatively Low | 35.9 | $6.9M |
| Winter Weather | Relatively Low | 25.7 | $39K |
| Wildfire | Very Low | 59.4 | $132K |
| Earthquake | Very Low | 20.5 | $49K |
| Hurricane | Very Low | 7.6 | $1K |
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 | 338 | 0 | $3.4M | 2nd of 99 | 195th of 3,080 |
| Severe thunderstorm wind | 233 | 0 | $4.8M | 30th of 99 | 1398th of 3,080 |
| Floods | 138 | 0 | $47M | 20th of 99 | 422nd of 3,080 |
| Heavy rain | 123 | 0 | $18K | 8th of 99 | 85th of 3,080 |
| Winter storms | 78 | 0 | $14M | 76th of 99 | 1137th of 3,077 |
| Tornadoes | 48 | 0 | $29M | 8th of 99 | 224th of 3,080 |
| Drought | 30 | 0 | $156M | 43rd of 99 | 924th of 3,063 |
| Extreme cold | 24 | 0 | $5.9M | 65th of 99 | 609th of 3,076 |
| High wind and dust storms | 24 | 0 | $1.4M | 62nd of 99 | 1027th of 3,080 |
| Lightning | 6 | 1 | $427K | 15th of 99 | 683rd of 3,080 |
| Heat | 4 | 0 | $177K | 67th of 99 | 1713th 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 Warren County record: every hazard by year and month, the deadliest events and FEMA's declarations.