Atchison County, Kansas
Natural disaster risk, federal disaster history and flood insurance facts.
Atchison County, Kansas has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 84% of US counties. It ranks 65th of 105 counties in Kansas. The costliest hazards here are inland flooding, tornadoes and heat waves. FEMA estimates about $9.4 million a year in expected losses, or roughly $578 per resident. Since 1967 it has been included in 18 federal disaster or emergency declarations for natural events (15 major disasters). The most recent was in September 2026 (severe storms, straight-line winds, tornadoes and flooding). Only 12 homes here carry federal flood insurance.
FEMA National Risk Index December 2025; OpenFEMA declarations to Nov 6, 2026; NFIP records. Updated November 6, 2026.
Top risks in Atchison County
- 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.
- Check that cooling works before summer.
- Know where the nearest cooling center is.
All 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Inland flooding | 21.7 | $4M | ||
| Tornado | 49.5 | $2M | ||
| Heat wave | 52.6 | $644K | ||
| Hail | 62.4 | $625K | ||
| Strong wind | 37.5 | $577K | ||
| Cold wave | 23.9 | $452K | ||
| Drought | 60.5 | $443K | ||
| Wildfire | 72.7 | $326K | ||
| Ice storm | 61.3 | $215K | ||
| Lightning | 34.8 | $200K | ||
| Winter weather | 49.5 | $95K | ||
| Earthquake | 25.5 | $70K | ||
| Landslide | 60.6 | $4K |
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 high in FEMA's measures.
Federal disaster history
Recent disasters nationwide ›Declarations by decade
Federal declarations for natural events that included Atchison County. 2020s bar runs to November 2026.
By type
Most recent
Show all 18
Kansas also had 10 statewide declarations that did not name single counties.
Storm history since 1951
Tornado risk by county ›The National Weather Service has logged 270 storm reports in Atchison County since 1951, with 0 deaths and 10 injuries and about $28.7 million in reported damage. The strongest on record here was an F3 tornado on April 26, 1984.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| Apr 26, 1984 | F3 | – | 9 / 0 |
| Jun 11, 1967 | F3 | – | 0 / 0 |
| May 6, 1993 | F2 | Arrington | 0 / 0 |
| Mar 8, 1974 | F2 | – | 0 / 0 |
| Oct 18, 1979 | F2 | – | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Apr 26, 1984 | Tornado | – | $25M |
| Jun 14, 2004 | Hail | Lancaster | $1M |
| May 6, 1993 | Tornado | Arrington | $550K |
| Mar 8, 1974 | Tornado | – | $250K |
| Oct 18, 1979 | Tornado | – | $250K |
| Oct 21, 1979 | Tornado | – | $250K |
Source: NOAA Storm Events Database, county-based reports through Jun 26, 2025. 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 Atchison 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 Atchison 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; 6,817 housing units.
Compare in Kansas
All 105 ›| Largest counties | Overall risk | Top hazard |
|---|---|---|
| Johnson County | Inland flooding | |
| Sedgwick County | Inland flooding | |
| Shawnee County | Inland flooding | |
| Wyandotte County | Inland flooding | |
| Douglas County | Inland flooding | |
| Leavenworth County | Inland flooding | |
| Riley County | Inland flooding | |
| Butler County | Inland flooding |
Neighboring counties
| County | Overall risk | Declarations |
|---|---|---|
| Platte County, MO | 24 | |
| Buchanan County, MO | 26 | |
| Leavenworth County | 21 | |
| Jefferson County | 17 | |
| Jackson County | 18 | |
| Brown County | 17 | |
| Doniphan County | 20 |
Common questions about Atchison County
What is the biggest natural hazard in Atchison County?
Inland flooding has the highest expected yearly losses in Atchison County, about $3.9 million a year in FEMA's estimate. Tornado is second at $1.9 million.
How many federal disasters has Atchison County had?
Atchison County has been included in 18 federal disaster or emergency declarations for natural events since 1967, including 15 major disasters. The most recent was Severe Storms, Straight-Line Winds, Tornadoes, and Flooding in September 2026.
Is Atchison County a high-risk place to live?
Its overall rating is Very Low, 65th highest of 105 in Kansas. 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 Atchison County?
Standard home insurance does not cover flooding. About 1 in 500 homes in Atchison County has federal flood insurance. Lenders require it in mapped high-risk zones, but many flood claims come from outside those zones.
How many tornadoes has Atchison County had?
NOAA records list 22 tornadoes in Atchison County since 1950. The strongest was an F3 tornado on April 26, 1984. The weather service has also logged 131 hail reports and 34 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.