Ontario, OR
Local storm history & FEMA National Risk Index data
Ontario 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 Malheur County, OR. The county's highest-rated hazards are wildfire, winter weather, and landslide.
Storm events near Ontario
NOAA-recorded tornado, hail, and flood events within 25 miles of Ontario's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Ontario 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 Malheur County's FEMA National Risk Index scores, covering Ontario along with the rest of the county, not a Ontario-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 91.4 | Relatively Moderate |
| Inland Flooding | 52 | Relatively Low |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 71.6 | Relatively Low |
| Heat Wave | 59.4 | Relatively Low |
| Tornado | 8.8 | Very Low |
| Avalanche | 70 | Relatively Low |
| Cold Wave | 10.4 | Very Low |
| Drought | 23.7 | Very Low |
| Hail | 55 | Relatively Low |
| Hurricane | — | Not Applicable |
| Ice Storm | 15.5 | Very Low |
| Landslide | 77.8 | Relatively Low |
| Lightning | 29.3 | Relatively Low |
| Strong Wind | 15.5 | Very Low |
| Tsunami | — | Not Applicable |
| Volcanic Activity | 52.8 | Very Low |
| Winter Weather | 81.5 | Relatively Moderate |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Malheur County risk profile for disaster declarations, social vulnerability, and climate projection data.
More on Malheur County:
Frequently asked questions
What natural hazards is Ontario, OR at risk of?
Ontario 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 Malheur County, where Ontario is located, are wildfire, winter weather, and landslide.
What is Ontario's biggest natural hazard risk?
Wildfire is the highest-rated hazard for Malheur County, where Ontario is located, scoring 91.4 out of 100 on FEMA's National Risk Index (rated "Relatively Moderate").
Is Ontario a high-risk area for natural disasters?
No — Ontario 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 Malheur County.
Has Ontario had tornadoes, hail, or flooding?
NOAA has recorded 7 hail, 9 inland flooding events within 25 miles of Ontario since 2016.