Nampa, ID
Local storm history & FEMA National Risk Index data
Nampa is rated Relatively Low for overall natural hazard risk — lower risk than most US counties — based on FEMA's National Risk Index for Canyon County, ID. The county's highest-rated hazards are winter weather, wildfire, and heat wave.
Storm events near Nampa
NOAA-recorded tornado, hail, and flood events within 25 miles of Nampa's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Nampa 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 Canyon County's FEMA National Risk Index scores, covering Nampa along with the rest of the county, not a Nampa-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 92.5 | Relatively Moderate |
| Inland Flooding | 80.3 | Relatively Moderate |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 78.8 | Relatively Low |
| Heat Wave | 89.5 | Relatively Moderate |
| Tornado | 20.8 | Very Low |
| Avalanche | 5.6 | Very Low |
| Cold Wave | 26 | Relatively Low |
| Drought | 20.9 | Very Low |
| Hail | 46.7 | Relatively Low |
| Hurricane | — | Not Applicable |
| Ice Storm | 73.8 | Relatively Moderate |
| Landslide | 31.7 | Very Low |
| Lightning | 84.9 | Relatively High |
| Strong Wind | 68.4 | Relatively Moderate |
| Tsunami | — | Not Applicable |
| Volcanic Activity | 68.7 | Very Low |
| Winter Weather | 97 | Very High |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Canyon County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Canyon County:
More on Canyon County:
Frequently asked questions
What natural hazards is Nampa, ID at risk of?
Nampa 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 Canyon County, where Nampa is located, are winter weather, wildfire, and heat wave.
What is Nampa's biggest natural hazard risk?
Winter Weather is the highest-rated hazard for Canyon County, where Nampa is located, scoring 97 out of 100 on FEMA's National Risk Index (rated "Very High").
Is Nampa a high-risk area for natural disasters?
No — Nampa carries lower risk than most US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively Low" for Canyon County.
Has Nampa had tornadoes, hail, or flooding?
NOAA has recorded 2 tornado, 12 hail, 18 inland flooding events within 25 miles of Nampa since 2016.