Hillsboro, OR
Local storm history & FEMA National Risk Index data
Hillsboro is rated Relatively High for overall natural hazard risk — higher risk than most US counties — based on FEMA's National Risk Index for Washington County, OR. The county's highest-rated hazards are earthquake, heat wave, and inland flooding.
Storm events near Hillsboro
NOAA-recorded tornado, hail, and flood events within 25 miles of Hillsboro's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Hillsboro 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 Washington County's FEMA National Risk Index scores, covering Hillsboro along with the rest of the county, not a Hillsboro-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 50.9 | Very Low |
| Inland Flooding | 93.9 | Relatively High |
| Coastal Flooding | 0 | No Rating |
| Earthquake | 99 | Relatively High |
| Heat Wave | 96.6 | Relatively High |
| Tornado | 53.1 | Relatively Low |
| Avalanche | 10.2 | Very Low |
| Cold Wave | 90.1 | Relatively High |
| Drought | 12.2 | Very Low |
| Hail | 29.8 | Very Low |
| Hurricane | — | Not Applicable |
| Ice Storm | 91.4 | Relatively High |
| Landslide | 85.8 | Relatively Low |
| Lightning | 81.7 | Relatively Moderate |
| Strong Wind | 80.1 | Relatively Moderate |
| Tsunami | — | Not Applicable |
| Volcanic Activity | 89.3 | Relatively Low |
| Winter Weather | 75.2 | Relatively Moderate |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Washington County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Washington County:
More on Washington County:
Frequently asked questions
What natural hazards is Hillsboro, OR at risk of?
Hillsboro is rated Relatively High for overall natural hazard risk by FEMA's National Risk Index — higher risk than most US counties. The highest-rated hazards for Washington County, where Hillsboro is located, are earthquake, heat wave, and inland flooding.
What is Hillsboro's biggest natural hazard risk?
Earthquake is the highest-rated hazard for Washington County, where Hillsboro is located, scoring 99 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Hillsboro a high-risk area for natural disasters?
Yes — Hillsboro carries higher risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively High" for Washington County.
Has Hillsboro had tornadoes, hail, or flooding?
NOAA has recorded 10 tornado, 2 hail, 26 inland flooding events within 25 miles of Hillsboro since 2016.