Casa Grande, AZ
Local storm history & FEMA National Risk Index data
Casa Grande 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 Pinal County, AZ. The county's highest-rated hazards are heat wave, wildfire, and lightning.
Storm events near Casa Grande
NOAA-recorded tornado, hail, and flood events within 25 miles of Casa Grande's center, 2016–2026 — the only hazards NOAA reports with exact coordinates, so these counts are specific to Casa Grande 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 Pinal County's FEMA National Risk Index scores, covering Casa Grande along with the rest of the county, not a Casa Grande-specific figure.
| Hazard | NRI score | Rating |
|---|---|---|
| Wildfire | 98 | Relatively High |
| Inland Flooding | 96.4 | Relatively High |
| Coastal Flooding | — | Not Applicable |
| Earthquake | 79.8 | Relatively Low |
| Heat Wave | 98.9 | Relatively High |
| Tornado | 37.1 | Relatively Low |
| Avalanche | 26.2 | Very Low |
| Cold Wave | 3.4 | Very Low |
| Drought | 95.7 | Relatively High |
| Hail | 82.3 | Relatively Moderate |
| Hurricane | 18.8 | Very Low |
| Ice Storm | — | Not Applicable |
| Landslide | 50.8 | Very Low |
| Lightning | 97 | Very High |
| Strong Wind | 75.3 | Relatively Moderate |
| Tsunami | — | Not Applicable |
| Volcanic Activity | — | Not Applicable |
| Winter Weather | 15.6 | Very Low |
Source: FEMA National Risk Index v1.20.0, December 2025. See the methodology page for definitions, or the full Pinal County risk profile for disaster declarations, social vulnerability, and climate projection data.
Other cities in Pinal County:
More on Pinal County:
Frequently asked questions
What natural hazards is Casa Grande, AZ at risk of?
Casa Grande 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 Pinal County, where Casa Grande is located, are heat wave, wildfire, and lightning.
What is Casa Grande's biggest natural hazard risk?
Heat Wave is the highest-rated hazard for Pinal County, where Casa Grande is located, scoring 98.9 out of 100 on FEMA's National Risk Index (rated "Relatively High").
Is Casa Grande a high-risk area for natural disasters?
Somewhat — Casa Grande 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 Pinal County.
Has Casa Grande had tornadoes, hail, or flooding?
NOAA has recorded 8 tornado, 12 hail, 63 inland flooding events within 25 miles of Casa Grande since 2016.