Walworth County, Wisconsin: hazard risk
FEMA rates Walworth County's overall risk Relatively Low (score 74.8 of 100, higher than 74% of rated U.S. counties); 1 of its 14 hazards are rated Relatively High or Very High, led by hail. Its storm record holds 1,038 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 | 94.8 | $3.3M |
| Tornado | Relatively Moderate | 88.2 | $7.5M |
| Cold Wave | Relatively Moderate | 88.0 | $7.0M |
| Strong Wind | Relatively Moderate | 81.1 | $1.6M |
| Lightning | Relatively Moderate | 75.4 | $711K |
| Riverine Flooding | Relatively Moderate | 73.2 | $18M |
| Heat Wave | Relatively Low | 74.0 | $1.3M |
| Landslide | Relatively Low | 65.2 | $5K |
| Winter Weather | Relatively Low | 53.5 | $85K |
| Ice Storm | Relatively Low | 44.6 | $78K |
| Drought | Relatively Low | 43.7 | $109K |
| Earthquake | Very Low | 52.1 | $358K |
| Wildfire | Very Low | 25.3 | $13K |
| Hurricane | Very Low | 12.6 | $3K |
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 | 326 | 0 | $12M | 6th of 72 | 546th of 3,080 |
| Winter storms | 225 | 1 | $39K | 12th of 72 | 188th of 3,077 |
| Hail | 135 | 0 | $4K | 17th of 72 | 1096th of 3,080 |
| High wind and dust storms | 62 | 0 | $2.2M | 8th of 72 | 288th of 3,080 |
| Heat | 45 | 1 | – | 7th of 72 | 356th of 3,076 |
| Tornadoes | 45 | 0 | $42M | 6th of 72 | 273rd of 3,080 |
| Extreme cold | 35 | 2 | $3K | 11th of 72 | 350th of 3,076 |
| Floods | 35 | 0 | $77M | 23rd of 72 | 1424th of 3,080 |
| Lightning | 22 | 0 | $810K | 12th of 72 | 250th of 3,080 |
| Drought | 18 | 0 | $891K | 20th of 72 | 1292nd of 3,063 |
| Heavy rain | 6 | 0 | $6K | 31st of 72 | 939th 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 Walworth County record: every hazard by year and month, the deadliest events and FEMA's declarations.