Delaware, OH
Local storm history & FEMA National Risk Index data
Delaware is rated Relatively Low for overall natural hazard risk — lower risk than most US counties — based on FEMA's National Risk Index for Delaware County, OH. The county's highest-rated hazards are hail, winter weather, and ice storm.
Storm events near Delaware
NOAA-recorded tornado, hail, and flood events within 25 miles of Delaware's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Delaware itself, not the whole county.
County-wide hazard risk
Every other hazard FEMA and NOAA track — including drought — is only scored at the county level. These are Delaware County's FEMA National Risk Index scores, covering Delaware along with the rest of the county, not a Delaware-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 26.7 | Very Low |
| Inland Flooding | 86.4 | Relatively Moderate |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 66.2 | Relatively Low |
| Heat Wave | 76.6 | Relatively Low |
| Tornado | 81.5 | Relatively Moderate |
| Avalanche | — | Not Applicable |
| Cold Wave | 40.9 | Relatively Low |
| Drought | 14.4 | Very Low |
| Hail | 89.4 | Relatively Moderate |
| Hurricane | 27.3 | Very Low |
| Ice Storm | 86.8 | Relatively High |
| Landslide | 47.2 | Very Low |
| Lightning | 79.6 | Relatively Moderate |
| Strong Wind | 78.3 | Relatively Moderate |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 87.8 | Relatively High |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Delaware County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Delaware County:
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Frequently asked questions
What natural hazards is Delaware, OH at risk of?
Delaware is rated Relatively Low for overall natural hazard risk by FEMA's National Risk Index — lower risk than most US counties. The highest-rated hazards for Delaware County, where Delaware is located, are hail, winter weather, and ice storm.
What is Delaware's biggest natural hazard risk?
Hail is the highest-rated hazard for Delaware County, where Delaware is located, scoring 89.4 out of 100 on FEMA's National Risk Index (rated "Relatively Moderate").
Is Delaware a high-risk area for natural disasters?
No — Delaware carries lower risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively Low" for Delaware County.
Has Delaware had tornadoes, hail, or flooding?
NOAA has recorded 18 tornado, 104 hail, 138 inland flooding events within 25 miles of Delaware since 2016.