Severn, Maryland: natural disaster risk
How exposed Severn is to floods, storms and other hazards, from FEMA and NOAA records for Anne Arundel County.
Severn is a community of 58,402 people in Anne Arundel County, Maryland. FEMA's National Risk Index rates Anne Arundel County relatively moderate for natural hazards overall, about average for the US. The costliest hazards there are inland flooding, hurricane and heat wave, with about $74.7 million in expected losses a year across the county. The weather service has logged 983 storm reports in the county since 1953, including 29 tornadoes and 173 floods. NOAA hurricane records show 1 hurricane and 19 tropical storms passing within 65 miles of the county's center. About 2.5% of homes in the county carry federal flood insurance.
Risk figures are for Anne Arundel County. FEMA National Risk Index December 2025; NOAA Storm Events; US Census Bureau ACS 2020 to 2024. Updated November 6, 2026.
Top risks in Severn
Full Anne Arundel 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.
- Check that cooling works before summer.
- Know where the nearest cooling center is.
All hazards
| Hazard | Rating | A year |
|---|---|---|
| Inland flooding | $33M | |
| Hurricane | $8M | |
| Heat wave | $7M | |
| Tornado | $7M | |
| Earthquake | $4M | |
| Strong wind | $4M | |
| Cold wave | $3M | |
| Lightning | $3M | |
| Coastal flooding | $2M | |
| Winter weather | $1M | |
| Hail | $1M | |
| Drought | $1M |
Homes in Severn
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 Anne Arundel County
More cities in Anne Arundel County
Common questions about Severn
Is Severn safe from natural disasters?
Severn is in Anne Arundel County, which FEMA's National Risk Index rates relatively moderate overall, about average for the US. The biggest hazards are inland flooding, hurricane, heat wave. No place is free of risk, so check the flood map and insurance for any home you consider.
What natural disasters happen in Severn?
By expected yearly losses in Anne Arundel County, the top hazards are inland flooding (Moderate), hurricane (Moderate), heat wave (Moderate). Anne Arundel County has been part of 21 federal disaster or emergency declarations for natural events.
Does Severn get tornadoes?
Yes. NOAA records list 29 tornadoes in Anne Arundel County since 1950; the strongest was an F3 tornado on June 9, 1961. FEMA rates tornado risk in the county moderate.
Do I need flood insurance in Severn?
Standard home insurance does not cover floods. In Anne Arundel County, about 2.5% 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.