Somerton, AZ
Local storm history & FEMA National Risk Index data
Somerton 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 Yuma County, AZ. The county's highest-rated hazards are earthquake, heat wave, and inland flooding.
Storm events near Somerton
NOAA-recorded tornado, hail, and flood events within 25 miles of Somerton's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Somerton 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 Yuma County's FEMA National Risk Index scores, covering Somerton along with the rest of the county, not a Somerton-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 59.2 | Very Low |
| Inland Flooding | 91 | Relatively Moderate |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 98.4 | Relatively High |
| Heat Wave | 96.7 | Relatively High |
| Tornado | 14 | Very Low |
| Avalanche | — | Not Applicable |
| Cold Wave | 0 | No Rating |
| Drought | 74.8 | Relatively Moderate |
| Hail | 16.8 | Very Low |
| Hurricane | 22.7 | Very Low |
| Ice Storm | — | Not Applicable |
| Landslide | 45.9 | Very Low |
| Lightning | 43.4 | Relatively Low |
| Strong Wind | 61.2 | Relatively Moderate |
| Tsunami | — | Not Applicable |
| Volcanic Activity | 59.9 | Very Low |
| Winter Weather | 1.1 | Very Low |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Yuma County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Yuma County:
More on Yuma County:
Frequently asked questions
What natural hazards is Somerton, AZ at risk of?
Somerton 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 Yuma County, where Somerton is located, are earthquake, heat wave, and inland flooding.
What is Somerton's biggest natural hazard risk?
Earthquake is the highest-rated hazard for Yuma County, where Somerton is located, scoring 98.4 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Somerton a high-risk area for natural disasters?
Somewhat — Somerton 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 Yuma County.
Has Somerton had tornadoes, hail, or flooding?
NOAA has recorded 42 inland flooding events within 25 miles of Somerton since 2016.