Chaska, Minnesota: natural disaster risk
How exposed Chaska is to floods, storms and other hazards, from FEMA and NOAA records for Carver County.
Chaska is a city of 28,706 people in Carver County, Minnesota. FEMA's National Risk Index rates Carver County relatively low for natural hazards overall, lower than most of the US. The costliest hazards there are inland flooding, tornado and strong wind, with about $41.4 million in expected losses a year across the county. The weather service has logged 471 storm reports in the county since 1956, including 26 tornadoes and 24 floods. About 0.2% of homes in the county carry federal flood insurance.
Risk figures are for Carver County. FEMA National Risk Index December 2025; NOAA Storm Events; US Census Bureau ACS 2020 to 2024. Updated November 6, 2026.
Top risks in Chaska
Full Carver 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.
- Secure outdoor furniture and trash bins before storms.
- Have trees near the house checked.
All hazards
| Hazard | Rating | A year |
|---|---|---|
| Inland flooding | $18M | |
| Tornado | $8M | |
| Strong wind | $5M | |
| Cold wave | $5M | |
| Hail | $2M | |
| Heat wave | $2M | |
| Lightning | $300K | |
| Ice storm | $284K | |
| Winter weather | $125K | |
| Drought | $92K | |
| Wildfire | $49K | |
| Earthquake | $17K |
Homes in Chaska
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 Carver County
More cities in Carver County
Other cities in Minnesota
All ›Common questions about Chaska
Is Chaska safe from natural disasters?
Chaska is in Carver County, which FEMA's National Risk Index rates relatively low overall, lower than most of the US. The biggest hazards are inland flooding, tornado, strong wind. No place is free of risk, so check the flood map and insurance for any home you consider.
What natural disasters happen in Chaska?
By expected yearly losses in Carver County, the top hazards are inland flooding (Low), tornado (Moderate), strong wind (High). Carver County has been part of 15 federal disaster or emergency declarations for natural events.
Does Chaska get tornadoes?
Yes. NOAA records list 26 tornadoes in Carver County since 1950; the strongest was an F4 tornado on May 6, 1965. FEMA rates tornado risk in the county moderate.
Do I need flood insurance in Chaska?
Standard home insurance does not cover floods. In Carver County, about 0.2% of homes have federal flood insurance, and FEMA rates inland flooding risk low. Check the FEMA flood map for your address and get a quote even outside a high-risk zone.