Marysville, OH
Local storm history & FEMA National Risk Index data
Marysville is rated Very Low for overall natural hazard risk — among the lowest-risk counties in the country — based on FEMA's National Risk Index for Union County, OH. The county's highest-rated hazards are ice storm, hail, and winter weather.
Storm events near Marysville
NOAA-recorded tornado, hail, and flood events within 25 miles of Marysville's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Marysville 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 Union County's FEMA National Risk Index scores, covering Marysville along with the rest of the county, not a Marysville-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 4.1 | Very Low |
| Inland Flooding | 52.7 | Relatively Low |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 48.6 | Very Low |
| Heat Wave | 49.2 | Relatively Low |
| Tornado | 49.5 | Relatively Low |
| Avalanche | — | Not Applicable |
| Cold Wave | 21.8 | Very Low |
| Drought | 35.5 | Relatively Low |
| Hail | 61.5 | Relatively Low |
| Hurricane | 23 | Very Low |
| Ice Storm | 75 | Relatively Moderate |
| Landslide | 25.5 | Very Low |
| Lightning | 36.6 | Relatively Low |
| Strong Wind | 32.7 | Relatively Low |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 58.3 | Relatively Low |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Union County risk profile for disaster declarations, social vulnerability, and climate projection data.
More on Union County:
Frequently asked questions
What natural hazards is Marysville, OH at risk of?
Marysville is rated Very Low for overall natural hazard risk by FEMA's National Risk Index — among the lowest-risk counties in the country. The highest-rated hazards for Union County, where Marysville is located, are ice storm, hail, and winter weather.
What is Marysville's biggest natural hazard risk?
Ice Storm is the highest-rated hazard for Union County, where Marysville is located, scoring 75 out of 100 on FEMA's National Risk Index (rated "Relatively Moderate").
Is Marysville a high-risk area for natural disasters?
No — Marysville carries among the lowest-risk counties in the country for overall natural hazard risk, per FEMA's National Risk Index rating of "Very Low" for Union County.
Has Marysville had tornadoes, hail, or flooding?
NOAA has recorded 16 tornado, 74 hail, 130 inland flooding events within 25 miles of Marysville since 2016.