Brown County, Wisconsin: hazard risk
FEMA rates Brown County's overall risk Relatively Moderate (score 90.0 of 100, higher than 90% of rated U.S. counties); 4 of its 15 hazards are rated Relatively High or Very High, led by cold wave, hail, lightning. Its storm record holds 609 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 | 98.1 | $25M |
| Hail | Relatively High | 95.7 | $4.1M |
| Lightning | Relatively High | 95.0 | $2.3M |
| Tornado | Relatively High | 93.4 | $12M |
| Riverine Flooding | Relatively Moderate | 91.9 | $57M |
| Winter Weather | Relatively Moderate | 83.9 | $313K |
| Heat Wave | Relatively Low | 76.0 | $1.5M |
| Ice Storm | Relatively Low | 47.8 | $95K |
| Coastal Flooding | Relatively Low | 46.4 | $69K |
| Strong Wind | Relatively Low | 31.0 | $367K |
| Landslide | Very Low | 57.8 | $3K |
| Earthquake | Very Low | 35.3 | $139K |
| Wildfire | Very Low | 33.8 | $22K |
| Hurricane | Very Low | 26.1 | $12K |
| Drought | No Rating | 0.0 | $0 |
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 | 190 | 1 | $2.1M | 16th of 72 | 1332nd of 3,080 |
| Hail | 129 | 0 | $32K | 20th of 72 | 1265th of 3,080 |
| Winter storms | 96 | 1 | $830K | 33rd of 72 | 828th of 3,077 |
| Floods | 37 | 0 | $2.5M | 15th of 72 | 1153rd of 3,080 |
| High wind and dust storms | 34 | 0 | $710K | 19th of 72 | 674th of 3,080 |
| Tornadoes | 30 | 0 | $37M | 13th of 72 | 798th of 3,080 |
| Extreme cold | 22 | 6 | – | 23rd of 72 | 621st of 3,076 |
| Heat | 19 | 0 | – | 22nd of 72 | 675th of 3,076 |
| Lightning | 16 | 0 | $454K | 11th of 72 | 235th of 3,080 |
| Heavy rain | 9 | 0 | $234K | 17th of 72 | 545th of 3,080 |
| Drought | 8 | 0 | – | 56th of 72 | 1811th of 3,063 |
| Rip currents and high surf | 1 | 0 | $1K | 8th of 72 | 185th 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 Brown County record: every hazard by year and month, the deadliest events and FEMA's declarations.