Mason, Ohio: natural disaster risk
How exposed Mason is to floods, storms and other hazards, from FEMA and NOAA records for Warren County.
Mason is a city of 35,509 people in Warren County, Ohio. FEMA's National Risk Index rates Warren County relatively low for natural hazards overall, lower than most of the US. The costliest hazards there are inland flooding, tornado and cold wave, with about $61.8 million in expected losses a year across the county. The weather service has logged 686 storm reports in the county since 1956, including 35 tornadoes and 140 floods. About 0.5% of homes in the county carry federal flood insurance.
Risk figures are for Warren County. FEMA National Risk Index December 2025; NOAA Storm Events; US Census Bureau ACS 2020 to 2024. Updated November 6, 2026.
Top risks in Mason
Full Warren 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.
- Pick a shelter spot: a basement, or an inside room on the lowest floor with no windows.
- Turn on emergency alerts on your phone and keep a weather radio.
- Insulate pipes in outside walls, crawl spaces and garages.
- Know how to shut off the main water valve.
All hazards
| Hazard | Rating | A year |
|---|---|---|
| Inland flooding | $39M | |
| Tornado | $8M | |
| Cold wave | $7M | |
| Earthquake | $2M | |
| Strong wind | $2M | |
| Lightning | $1M | |
| Ice storm | $1M | |
| Heat wave | $1M | |
| Hail | $570K | |
| Winter weather | $321K | |
| Drought | $201K | |
| Wildfire | $36K |
Homes in Mason
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 Warren County
Common questions about Mason
Is Mason safe from natural disasters?
Mason is in Warren County, which FEMA's National Risk Index rates relatively low overall, lower than most of the US. The biggest hazards are inland flooding, tornado, cold wave. No place is free of risk, so check the flood map and insurance for any home you consider.
What natural disasters happen in Mason?
By expected yearly losses in Warren County, the top hazards are inland flooding (Moderate), tornado (Moderate), cold wave (Moderate). Warren County has been part of 11 federal disaster or emergency declarations for natural events.
Does Mason get tornadoes?
Yes. NOAA records list 35 tornadoes in Warren County since 1950; the strongest was an F4 tornado on June 2, 1990. FEMA rates tornado risk in the county moderate.
Do I need flood insurance in Mason?
Standard home insurance does not cover floods. In Warren County, about 0.5% of homes have federal flood insurance, and FEMA rates inland flooding risk moderate. Check the FEMA flood map for your address and get a quote even outside a high-risk zone.