Rock Island County, Illinois: hazard risk
FEMA rates Rock Island County's overall risk Relatively Moderate (score 84.1 of 100, higher than 84% of rated U.S. counties); 5 of its 14 hazards are rated Relatively High or Very High, led by cold wave, strong wind, tornado. Its storm record holds 872 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 |
|---|---|---|---|
| Cold Wave | Relatively High | 95.7 | $11M |
| Strong Wind | Relatively High | 94.1 | $2.4M |
| Tornado | Relatively High | 91.0 | $6.8M |
| Winter Weather | Relatively High | 90.3 | $360K |
| Lightning | Relatively High | 89.5 | $1.0M |
| Heat Wave | Relatively Moderate | 93.4 | $4.0M |
| Hail | Relatively Moderate | 91.8 | $1.8M |
| Ice Storm | Relatively Moderate | 80.4 | $366K |
| Riverine Flooding | Relatively Moderate | 79.5 | $17M |
| Drought | Relatively Moderate | 70.5 | $464K |
| Landslide | Relatively Low | 84.0 | $23K |
| Earthquake | Relatively Low | 62.3 | $451K |
| Hurricane | Very Low | 13.8 | $3K |
| Wildfire | Very Low | 8.7 | $2K |
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 | 306 | 0 | $2.4M | 3rd of 102 | 247th of 3,080 |
| Winter storms | 154 | 1 | $9K | 9th of 102 | 230th of 3,077 |
| Hail | 152 | 0 | $898K | 12th of 102 | 378th of 3,080 |
| Floods | 120 | 2 | $6.3M | 13th of 102 | 183rd of 3,080 |
| Tornadoes | 41 | 0 | $49M | 6th of 102 | 136th of 3,080 |
| Extreme cold | 23 | 2 | $748K | 29th of 102 | 468th of 3,076 |
| High wind and dust storms | 17 | 0 | $490K | 34th of 102 | 1094th of 3,080 |
| Drought | 15 | 0 | $14M | 38th of 102 | 1233rd of 3,063 |
| Heavy rain | 14 | 0 | $13K | 16th of 102 | 438th of 3,080 |
| Lightning | 8 | 2 | $104K | 10th of 102 | 397th of 3,080 |
| Heat | 6 | 0 | – | 85th of 102 | 1211th of 3,076 |
| Landslides and avalanches | 1 | 0 | $32K | 1st of 102 | 247th of 2,278 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Rock Island County record: every hazard by year and month, the deadliest events and FEMA's declarations.