Union County, Ohio: hazard risk
FEMA rates Union County's overall risk Very Low (score 32.7 of 100, higher than 32% of rated U.S. counties). Its storm record holds 433 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 |
|---|---|---|---|
| Ice Storm | Relatively Moderate | 75.0 | $524K |
| Hail | Relatively Low | 61.5 | $722K |
| Winter Weather | Relatively Low | 58.3 | $155K |
| Riverine Flooding | Relatively Low | 52.7 | $13M |
| Tornado | Relatively Low | 49.5 | $2.2M |
| Heat Wave | Relatively Low | 49.2 | $647K |
| Lightning | Relatively Low | 36.6 | $255K |
| Drought | Relatively Low | 35.5 | $78K |
| Strong Wind | Relatively Low | 32.7 | $588K |
| Earthquake | Very Low | 48.6 | $459K |
| Landslide | Very Low | 25.5 | $364 |
| Hurricane | Very Low | 23.0 | $14K |
| Cold Wave | Very Low | 21.8 | $467K |
| Wildfire | Very Low | 4.1 | $2K |
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 | 147 | 0 | $1.3M | 66th of 88 | 819th of 3,080 |
| Winter storms | 118 | 0 | $49K | 21st of 88 | 420th of 3,077 |
| Hail | 67 | 0 | $108K | 56th of 88 | 1434th of 3,080 |
| Floods | 59 | 0 | $5.7M | 57th of 88 | 736th of 3,080 |
| High wind and dust storms | 16 | 0 | $7.7M | 66th of 88 | 1241st of 3,080 |
| Tornadoes | 12 | 0 | $3.0M | 59th of 88 | 1771st of 3,080 |
| Heat | 5 | 0 | – | 29th of 88 | 1362nd of 3,076 |
| Extreme cold | 4 | 0 | $806K | 68th of 88 | 1845th of 3,076 |
| Drought | 2 | 0 | – | 62nd of 88 | 2223rd of 3,063 |
| Heavy rain | 2 | 0 | – | 46th of 88 | 1398th 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 Union County record: every hazard by year and month, the deadliest events and FEMA's declarations.