Winnebago County, Wisconsin: hazard risk
FEMA rates Winnebago County's overall risk Relatively Moderate (score 86.8 of 100, higher than 86% of rated U.S. counties); 4 of its 14 hazards are rated Relatively High or Very High, led by cold wave, strong wind, tornado. Its storm record holds 591 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 | 95.3 | $14M |
| Strong Wind | Relatively High | 94.4 | $3.3M |
| Tornado | Relatively High | 91.3 | $9.4M |
| Lightning | Relatively High | 82.9 | $989K |
| Hail | Relatively Moderate | 93.8 | $2.9M |
| Riverine Flooding | Relatively Moderate | 89.3 | $43M |
| Winter Weather | Relatively Moderate | 77.7 | $218K |
| Heat Wave | Relatively Low | 75.0 | $1.4M |
| Ice Storm | Relatively Low | 49.8 | $99K |
| Wildfire | Very Low | 40.2 | $31K |
| Earthquake | Very Low | 33.0 | $116K |
| Drought | Very Low | 26.1 | $18K |
| Landslide | Very Low | 21.3 | $157 |
| Hurricane | Very Low | 16.9 | $5K |
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 | 193 | 2 | $17M | 11th of 72 | 839th of 3,080 |
| Hail | 143 | 0 | $31M | 3rd of 72 | 388th of 3,080 |
| Winter storms | 88 | 1 | – | 29th of 72 | 732nd of 3,077 |
| High wind and dust storms | 32 | 2 | $403K | 16th of 72 | 565th of 3,080 |
| Tornadoes | 31 | 1 | $50M | 9th of 72 | 511th of 3,080 |
| Floods | 20 | 0 | $34M | 28th of 72 | 1656th of 3,080 |
| Extreme cold | 13 | 0 | – | 31st of 72 | 832nd of 3,076 |
| Heat | 13 | 1 | – | 24th of 72 | 775th of 3,076 |
| Heavy rain | 11 | 0 | – | 7th of 72 | 393rd of 3,080 |
| Drought | 9 | 0 | – | 50th of 72 | 1618th of 3,063 |
| Lightning | 9 | 0 | $971K | 15th of 72 | 405th of 3,080 |
| Rip currents and high surf | 4 | 0 | – | 4th of 72 | 121st of 2,080 |
Source: NOAA NCEI Storm Events Database, 1950 to 2026-06-30; damage in 2025 dollars. Search the record at NCEI.
The full Winnebago County record: every hazard by year and month, the deadliest events and FEMA's declarations.