Edmunds County, South Dakota
Natural disaster risk, federal disaster history and flood insurance facts.
Edmunds County, South Dakota has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 93% of US counties. It ranks 52nd of 66 counties in South Dakota. The costliest hazards here are cold waves, inland flooding and hail. FEMA estimates about $5.3 million a year in expected losses, or roughly $1,348 per resident. Since 1969 it has been included in 18 federal disaster or emergency declarations for natural events (16 major disasters). The most recent was in June 2019 (severe winter storm, snowstorm and flooding). Only 1 home here carries federal flood insurance.
FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.
Top risks in Edmunds County
- Insulate pipes in outside walls, crawl spaces and garages.
- Know how to shut off the main water valve.
- 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.
- Ask about the roof age and any impact-rated shingles.
- Check your home policy for a separate wind and hail deductible.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Cold wave | 55.4 | $2M | ||
| Inland flooding | 8.0 | $2M | ||
| Hail | 56.7 | $484K | ||
| Tornado | 23.1 | $445K | ||
| Strong wind | 24.1 | $320K | ||
| Wildfire | 69.2 | $236K | ||
| Winter weather | 74.5 | $231K | ||
| Drought | 47.6 | $178K | ||
| Ice storm | 51.0 | $127K | ||
| Heat wave | 12.3 | $37K | ||
| Lightning | 4.9 | $23K | ||
| Earthquake | 11.6 | $17K | ||
| Landslide | 3.5 | $6 |
Scores are percentiles: a score of 90 means higher risk than about 90% of US counties for that hazard. Hazards FEMA does not rate here are left out. Social vulnerability is very low and community resilience is relatively moderate in FEMA's measures.
Federal disaster history
Recent disasters nationwide ›Declarations by decade
Federal declarations for natural events that included Edmunds County. 2020s bar runs to November 2026.
By type
Most recent
Show all 18
South Dakota also had 46 statewide declarations that did not name single counties.
Storm history since 1955
Tornado risk by county ›The National Weather Service has logged 554 storm reports in Edmunds County since 1955 and about $15.1 million in reported damage. The strongest on record here was an EF4 tornado on May 22, 2010 near Bowdle.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| May 22, 2010 | EF4 | Bowdle | 0 / 0 |
| Apr 19, 1955 | F2 | – | 0 / 0 |
| Jul 18, 2001 | F2 | Bowdle | 0 / 0 |
| May 22, 2010 | EF2 | Ipswich Taylor Arpt | 0 / 0 |
| Apr 19, 1973 | F1 | – | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Jun 1, 2019 | Flood | Bowdle | $15M |
| Jul 18, 1994 | Thunderstorm Wind | Mina Lake | $50K |
| Apr 1, 2019 | Flood | Bowdle | $40K |
| Apr 19, 1973 | Tornado | – | $25K |
| Sep 3, 1999 | Flash Flood | Mina | $5K |
| Sep 8, 2009 | Flash Flood | Mina | $5K |
Source: NOAA Storm Events Database, county-based reports through Jul 25, 2026. Tornado records start in 1950, hail and wind in 1955, and floods and other storm types in 1996, so older decades undercount. Damage is in dollars of the year it happened and is often an estimate. Winter storms, heat and hurricanes are logged by forecast zone, not county, so they are not counted here.
Flood insurance in Edmunds County
Check your address flood zone ›National Flood Insurance Program (NFIP) records only; private flood policies are not included. Home counts as of Aug 3, 2026. Since 2021 NFIP prices each home separately under Risk Rating 2.0, so your price depends on the building, not the county. Ask an agent for a quote.
Homes in Edmunds County
Older homes and mobile homes usually suffer more damage in storms, floods and earthquakes, and can cost more to insure. If you are buying, ask about roof age, foundation bolting and any retrofits. Source: US Census Bureau, American Community Survey 2020 to 2024 5-year estimates; 1,898 housing units.
Compare in South Dakota
All 66 ›| Largest counties | Overall risk | Top hazard |
|---|---|---|
| Minnehaha County | Tornado | |
| Pennington County | Inland flooding | |
| Lincoln County | Tornado | |
| Brown County | Cold wave | |
| Brookings County | Inland flooding | |
| Meade County | Inland flooding | |
| Codington County | Inland flooding | |
| Lawrence County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Brown County | 17 | |
| Walworth County | 10 | |
| Potter County | 14 | |
| McPherson County | 15 | |
| Faulk County | 15 |
Common questions about Edmunds County
What is the biggest natural hazard in Edmunds County?
Cold wave has the highest expected yearly losses in Edmunds County, about $1.7 million a year in FEMA's estimate. Inland flooding is second at $1.6 million.
How many federal disasters has Edmunds County had?
Edmunds County has been included in 18 federal disaster or emergency declarations for natural events since 1969, including 16 major disasters. The most recent was Severe Winter Storm, Snowstorm, and Flooding in June 2019.
Is Edmunds County a high-risk place to live?
Its overall rating is Very Low, 52nd highest of 66 in South Dakota. A county rating covers the whole area. Risk at one address can be much higher or lower, so check the FEMA flood map and ask about the home's history.
Do I need flood insurance in Edmunds County?
Standard home insurance does not cover flooding. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.
How many tornadoes has Edmunds County had?
NOAA records list 27 tornadoes in Edmunds County since 1950. The strongest was an EF4 tornado on May 22, 2010 near Bowdle. The weather service has also logged 291 hail reports and 29 floods here.
Sources: FEMA National Risk Index (December 2025), OpenFEMA Disaster Declarations Summaries, and NFIP policy and claims data. Hazard Compass is independent and not affiliated with FEMA. These figures describe the whole county, not a single property, and are not insurance or safety advice. Report a problem.