Casa Grande, Arizona: natural disaster risk
How exposed Casa Grande is to floods, storms and other hazards, from FEMA and NOAA records for Pinal County.
Casa Grande is a city of 60,905 people in Pinal County, Arizona. FEMA's National Risk Index rates Pinal County relatively moderate for natural hazards overall, about average for the US. The costliest hazards there are inland flooding, heat wave and wildfire, with about $137 million in expected losses a year across the county. The weather service has logged 740 storm reports in the county since 1955, including 30 tornadoes and 162 floods. About 0.5% of homes in the county carry federal flood insurance.
Risk figures are for Pinal County. FEMA National Risk Index December 2025; NOAA Storm Events; US Census Bureau ACS 2020 to 2024. Updated November 6, 2026.
Top risks in Casa Grande
Full Pinal County report ›- Check the FEMA flood map for your address, and ask the seller or landlord about past flooding.
- Price a flood policy now. Most new federal policies take 30 days to start.
- Check that cooling works before summer.
- Know where the nearest cooling center is.
- Clear dry plants and debris within 5 feet of the house.
- Get home insurance quotes early; availability varies by area.
All hazards
| Hazard | Rating | A year |
|---|---|---|
| Inland flooding | $92M | |
| Heat wave | $24M | |
| Wildfire | $12M | |
| Drought | $3M | |
| Lightning | $2M | |
| Earthquake | $2M | |
| Strong wind | $1M | |
| Hail | $954K | |
| Tornado | $712K | |
| Winter weather | $12K | |
| Hurricane | $5K | |
| Cold wave | $1K |
Homes in Casa Grande
Older homes and mobile homes usually take more damage in storms, floods and earthquakes. Ask about roof age, flood history and retrofits before you buy or rent.
Strongest tornadoes in Pinal County
More cities in Pinal County
Common questions about Casa Grande
Is Casa Grande safe from natural disasters?
Casa Grande is in Pinal County, which FEMA's National Risk Index rates relatively moderate overall, about average for the US. The biggest hazards are inland flooding, heat wave, wildfire. No place is free of risk, so check the flood map and insurance for any home you consider.
What natural disasters happen in Casa Grande?
By expected yearly losses in Pinal County, the top hazards are inland flooding (High), heat wave (High), wildfire (High). Pinal County has been part of 21 federal disaster or emergency declarations for natural events.
Does Casa Grande get tornadoes?
Yes. NOAA records list 30 tornadoes in Pinal County since 1950; the strongest was an F1 tornado on June 21, 1972. FEMA rates tornado risk in the county low.
Do I need flood insurance in Casa Grande?
Standard home insurance does not cover floods. In Pinal County, about 0.5% of homes have federal flood insurance, and FEMA rates inland flooding risk high. Check the FEMA flood map for your address and get a quote even outside a high-risk zone.