Brown County, Ohio: hazard risk
FEMA rates Brown County's overall risk Relatively Low (score 62.6 of 100, higher than 62% of rated U.S. counties); 1 of its 14 hazards are rated Relatively High or Very High, led by strong wind. Its storm record holds 607 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 |
|---|---|---|---|
| Strong Wind | Relatively High | 84.3 | $1.2M |
| Lightning | Relatively Moderate | 75.5 | $472K |
| Riverine Flooding | Relatively Moderate | 75.0 | $13M |
| Ice Storm | Relatively Moderate | 64.9 | $129K |
| Landslide | Relatively Low | 85.8 | $26K |
| Earthquake | Relatively Low | 65.8 | $490K |
| Heat Wave | Relatively Low | 64.9 | $564K |
| Tornado | Relatively Low | 57.5 | $1.2M |
| Drought | Relatively Low | 53.2 | $140K |
| Winter Weather | Relatively Low | 51.7 | $53K |
| Cold Wave | Relatively Low | 47.1 | $659K |
| Hail | Relatively Low | 39.6 | $136K |
| Wildfire | Very Low | 60.7 | $68K |
| Hurricane | Very Low | 26.8 | $9K |
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 | 251 | 0 | $2.4M | 41st of 88 | 493rd of 3,080 |
| Winter storms | 124 | 0 | $941K | 22nd of 88 | 477th of 3,077 |
| Floods | 111 | 4 | $14M | 24th of 88 | 380th of 3,080 |
| Hail | 66 | 0 | $177K | 64th of 88 | 1567th of 3,080 |
| Tornadoes | 27 | 1 | $57M | 16th of 88 | 641st of 3,080 |
| High wind and dust storms | 12 | 0 | $7.2M | 81st of 88 | 1601st of 3,080 |
| Heat | 7 | 0 | – | 17th of 88 | 1192nd of 3,076 |
| Extreme cold | 4 | 0 | $806K | 77th of 88 | 1954th of 3,076 |
| Heavy rain | 3 | 0 | $1K | 32nd of 88 | 1219th of 3,080 |
| Drought | 2 | 0 | – | 72nd of 88 | 2259th of 3,063 |
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.