Ammon, ID
Local storm history & FEMA National Risk Index data
Ammon is rated Relatively Moderate for overall natural hazard risk — near the middle compared to other US counties — based on FEMA's National Risk Index for Bonneville County, ID. The county's highest-rated hazards are earthquake, avalanche, and landslide.
Storm events near Ammon
NOAA-recorded tornado, hail, and flood events within 25 miles of Ammon's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Ammon 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 Bonneville County's FEMA National Risk Index scores, covering Ammon along with the rest of the county, not a Ammon-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 90.3 | Relatively Moderate |
| Inland Flooding | 78.6 | Relatively Moderate |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 94.2 | Relatively Moderate |
| Heat Wave | 81.2 | Relatively Moderate |
| Tornado | 16.2 | Very Low |
| Avalanche | 94.2 | Relatively High |
| Cold Wave | 93 | Relatively High |
| Drought | 19.4 | Very Low |
| Hail | 84.9 | Relatively Moderate |
| Hurricane | — | Not Applicable |
| Ice Storm | 26.8 | Very Low |
| Landslide | 94.2 | Relatively Moderate |
| Lightning | 89.5 | Relatively High |
| Strong Wind | 43.9 | Relatively Low |
| Tsunami | — | Not Applicable |
| Volcanic Activity | 72.3 | Very Low |
| Winter Weather | 66.2 | Relatively Moderate |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Bonneville County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Bonneville County:
More on Bonneville County:
Frequently asked questions
What natural hazards is Ammon, ID at risk of?
Ammon is rated Relatively Moderate for overall natural hazard risk by FEMA's National Risk Index — near the middle compared to other US counties. The highest-rated hazards for Bonneville County, where Ammon is located, are earthquake, avalanche, and landslide.
What is Ammon's biggest natural hazard risk?
Earthquake is the highest-rated hazard for Bonneville County, where Ammon is located, scoring 94.2 out of 100 on FEMA's National Risk Index (rated "Relatively Moderate").
Is Ammon a high-risk area for natural disasters?
Somewhat — Ammon carries near the middle compared to other US counties for overall natural hazard risk, per FEMA's National Risk Index rating of "Relatively Moderate" for Bonneville County.
Has Ammon had tornadoes, hail, or flooding?
NOAA has recorded 3 tornado, 19 hail, 13 inland flooding events within 25 miles of Ammon since 2016.