Delaware County, Ohio: hazard risk
FEMA rates Delaware County's overall risk Relatively Low (score 78.8 of 100, higher than 78% of rated U.S. counties); 2 of its 14 hazards are rated Relatively High or Very High, led by winter weather, ice storm. Its storm record holds 603 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 |
|---|---|---|---|
| Winter Weather | Relatively High | 87.8 | $603K |
| Ice Storm | Relatively High | 86.8 | $1.2M |
| Hail | Relatively Moderate | 89.4 | $2.9M |
| Riverine Flooding | Relatively Moderate | 86.4 | $49M |
| Tornado | Relatively Moderate | 81.5 | $7.4M |
| Lightning | Relatively Moderate | 79.6 | $1.2M |
| Strong Wind | Relatively Moderate | 78.3 | $2.1M |
| Heat Wave | Relatively Low | 76.6 | $2.2M |
| Earthquake | Relatively Low | 66.2 | $1.1M |
| Cold Wave | Relatively Low | 40.9 | $1.2M |
| Landslide | Very Low | 47.2 | $2K |
| Hurricane | Very Low | 27.3 | $20K |
| Wildfire | Very Low | 26.7 | $21K |
| Drought | Very Low | 14.4 | $732 |
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 | 265 | 0 | $2.6M | 34th of 88 | 368th of 3,080 |
| Winter storms | 124 | 0 | $990K | 19th of 88 | 404th of 3,077 |
| Hail | 95 | 0 | $104M | 33rd of 88 | 895th of 3,080 |
| Floods | 72 | 0 | $740K | 45th of 88 | 615th of 3,080 |
| High wind and dust storms | 15 | 2 | $25M | 70th of 88 | 1345th of 3,080 |
| Tornadoes | 14 | 4 | $28M | 49th of 88 | 1603rd of 3,080 |
| Heat | 5 | 0 | – | 30th of 88 | 1391st of 3,076 |
| Heavy rain | 5 | 0 | $1K | 19th of 88 | 936th of 3,080 |
| Extreme cold | 4 | 0 | $806K | 69th of 88 | 1866th of 3,076 |
| Drought | 2 | 0 | – | 64th of 88 | 2230th of 3,063 |
| Lightning | 2 | 0 | $1.2M | 58th of 88 | 1834th 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 Delaware County record: every hazard by year and month, the deadliest events and FEMA's declarations.