Alvin, Texas: natural disaster risk
How exposed Alvin is to floods, storms and other hazards, from FEMA and NOAA records for Brazoria County.
Alvin is a city of 28,333 people in Brazoria County, Texas. FEMA's National Risk Index rates Brazoria County relatively moderate for natural hazards overall, about average for the US. The costliest hazards there are inland flooding, hurricane and tornado, with about $161 million in expected losses a year across the county. The weather service has logged 516 storm reports in the county since 1950, including 96 tornadoes and 63 floods. NOAA hurricane records show 29 hurricanes and 26 tropical storms passing within 65 miles of the county's center, 6 of them major. About 22.5% of homes in the county carry federal flood insurance.
Risk figures are for Brazoria County. FEMA National Risk Index December 2025; NOAA Storm Events; US Census Bureau ACS 2020 to 2024. Updated November 6, 2026.
Top risks in Alvin
Full Brazoria 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.
- Know your evacuation zone and route before June 1.
- Ask about roof age, shutters and the separate wind or hurricane deductible on your home policy.
- 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.
All hazards
| Hazard | Rating | A year |
|---|---|---|
| Inland flooding | $78M | |
| Hurricane | $44M | |
| Tornado | $21M | |
| Cold wave | $5M | |
| Heat wave | $5M | |
| Lightning | $2M | |
| Coastal flooding | $2M | |
| Drought | $1M | |
| Wildfire | $887K | |
| Strong wind | $822K | |
| Ice storm | $691K | |
| Hail | $432K |
Homes in Alvin
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 Brazoria County
More cities in Brazoria County
Common questions about Alvin
Is Alvin safe from natural disasters?
Alvin is in Brazoria County, which FEMA's National Risk Index rates relatively moderate overall, about average for the US. The biggest hazards are inland flooding, hurricane, tornado. No place is free of risk, so check the flood map and insurance for any home you consider.
What natural disasters happen in Alvin?
By expected yearly losses in Brazoria County, the top hazards are inland flooding (High), hurricane (High), tornado (High). Brazoria County has been part of 32 federal disaster or emergency declarations for natural events.
Does Alvin get tornadoes?
Yes. NOAA records list 96 tornadoes in Brazoria County since 1950; the strongest was an F3 tornado on March 8, 1976. FEMA rates tornado risk in the county high.
Do I need flood insurance in Alvin?
Standard home insurance does not cover floods. In Brazoria County, about 22.5% 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.