Delaware County, Oklahoma: hazard risk
FEMA rates Delaware County's overall risk Relatively Moderate (score 82.7 of 100, higher than 82% of rated U.S. counties); 2 of its 14 hazards are rated Relatively High or Very High, led by ice storm, strong wind. Its storm record holds 782 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 | Very High | 98.1 | $1.8M |
| Strong Wind | Relatively High | 90.3 | $1.3M |
| Heat Wave | Relatively Moderate | 92.0 | $2.2M |
| Wildfire | Relatively Moderate | 90.8 | $936K |
| Tornado | Relatively Moderate | 87.0 | $3.5M |
| Riverine Flooding | Relatively Moderate | 86.5 | $17M |
| Winter Weather | Relatively Moderate | 80.6 | $131K |
| Cold Wave | Relatively Moderate | 74.1 | $1.6M |
| Lightning | Relatively Moderate | 71.5 | $320K |
| Drought | Relatively Moderate | 64.1 | $228K |
| Landslide | Relatively Low | 75.2 | $6K |
| Hail | Relatively Low | 72.5 | $382K |
| Earthquake | Relatively Low | 60.5 | $282K |
| Hurricane | Very Low | 44.6 | $27K |
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 | 270 | 0 | $3.3M | 30th of 77 | 1257th of 3,080 |
| Hail | 261 | 0 | $1.2M | 50th of 77 | 399th of 3,080 |
| Tornadoes | 66 | 0 | $39M | 28th of 77 | 282nd of 3,080 |
| Winter storms | 52 | 0 | $93M | 22nd of 77 | 1949th of 3,077 |
| Floods | 44 | 1 | $376K | 25th of 77 | 1418th of 3,080 |
| Drought | 42 | 0 | – | 69th of 77 | 817th of 3,063 |
| Heat | 26 | 1 | – | 64th of 77 | 689th of 3,076 |
| Wildfires | 14 | 0 | $62K | 10th of 77 | 147th of 2,972 |
| High wind and dust storms | 5 | 0 | $24K | 67th of 77 | 2552nd of 3,080 |
| Lightning | 2 | 0 | $165K | 48th of 77 | 1683rd 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.