LaSalle County, Illinois: hazard risk
FEMA rates LaSalle County's overall risk Relatively Moderate (score 86.1 of 100, higher than 86% of rated U.S. counties); 2 of its 14 hazards are rated Relatively High or Very High, led by cold wave, strong wind. Its storm record holds 935 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 | 96.5 | $15M |
| Strong Wind | Relatively High | 85.5 | $1.7M |
| Riverine Flooding | Relatively Moderate | 88.2 | $33M |
| Drought | Relatively Moderate | 88.0 | $1.5M |
| Tornado | Relatively Moderate | 84.1 | $5.0M |
| Lightning | Relatively Moderate | 71.2 | $527K |
| Winter Weather | Relatively Moderate | 69.9 | $131K |
| Ice Storm | Relatively Moderate | 61.9 | $149K |
| Earthquake | Relatively Low | 82.4 | $2.2M |
| Heat Wave | Relatively Low | 69.7 | $909K |
| Landslide | Relatively Low | 69.0 | $5K |
| Hail | Relatively Low | 61.9 | $412K |
| Hurricane | Very Low | 30.3 | $15K |
| Wildfire | Very Low | 21.3 | $8K |
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 | 403 | 0 | $838K | 79th of 102 | 1533rd of 3,080 |
| Hail | 175 | 0 | $1.2M | 84th of 102 | 1867th of 3,080 |
| Floods | 81 | 1 | $113M | 81st of 102 | 1385th of 3,080 |
| Winter storms | 79 | 1 | $3K | 88th of 102 | 1962nd of 3,077 |
| Tornadoes | 67 | 10 | $18M | 78th of 102 | 1196th of 3,080 |
| High wind and dust storms | 32 | 0 | $512K | 52nd of 102 | 1499th of 3,080 |
| Extreme cold | 21 | 0 | – | 66th of 102 | 1238th of 3,076 |
| Drought | 17 | 0 | – | 79th of 102 | 1815th of 3,063 |
| Lightning | 15 | 0 | $214K | 12th of 102 | 534th of 3,080 |
| Heat | 12 | 0 | – | 91st of 102 | 1440th of 3,076 |
| Heavy rain | 10 | 0 | – | 43rd of 102 | 1215th 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 LaSalle County record: every hazard by year and month, the deadliest events and FEMA's declarations.