Harper County, Kansas
Natural disaster risk, federal disaster history and flood insurance facts.
Harper County, Kansas has a very low overall risk from natural hazards in FEMA's National Risk Index. Its risk score is lower than 69% of US counties. It ranks 42nd of 105 counties in Kansas. The costliest hazards here are cold waves, inland flooding and tornadoes. FEMA estimates about $8.8 million a year in expected losses, or roughly $1,614 per resident. Since 1967 it has been included in 20 federal disaster or emergency declarations for natural events (18 major disasters). The most recent was in September 2026 (severe storms, straight-line winds, tornadoes and flooding). Only 13 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 Harper 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.
- 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 18 hazards
What the ratings mean ›| Hazard | Rating | Score | Expected loss a year | |
|---|---|---|---|---|
| Cold wave | 70.6 | $2M | ||
| Inland flooding | 16.3 | $2M | ||
| Tornado | 62.7 | $2M | ||
| Drought | 88.0 | $1M | ||
| Hail | 83.5 | $935K | ||
| Strong wind | 47.9 | $450K | ||
| Wildfire | 79.5 | $336K | ||
| Heat wave | 47.7 | $290K | ||
| Ice storm | 66.3 | $157K | ||
| Lightning | 18.2 | $54K | ||
| Earthquake | 27.3 | $49K | ||
| Winter weather | 18.4 | $14K | ||
| Hurricane | 22.4 | $6K | ||
| Landslide | 17.7 | $77 |
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 relatively moderate 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 Harper County. 2020s bar runs to November 2026.
By type
Most recent
Show all 20
Kansas also had 10 statewide declarations that did not name single counties.
Storm history since 1953
Tornado risk by county ›The National Weather Service has logged 715 storm reports in Harper County since 1953, with 0 deaths and 7 injuries and about $13.1 million in reported damage. The strongest on record here was an F4 tornado on May 12, 2004 near Harper.
Strongest tornadoes
| Date | Strength | Near | Hurt / killed |
|---|---|---|---|
| May 12, 2004 | F4 | Harper | 1 / 0 |
| May 19, 2012 | EF3 | Duquoin | 0 / 0 |
| May 19, 2012 | EF3 | Attica | 0 / 0 |
| May 29, 2004 | F2 | Anthony | 0 / 0 |
| May 12, 2004 | F2 | Attica | 0 / 0 |
Most damaging storms
| Date | Type | Near | Damage |
|---|---|---|---|
| Apr 26, 2009 | Flash Flood | Corwin | $5M |
| May 29, 2004 | Tornado | Freeport | $1M |
| Jul 20, 2009 | Hail | Runnymede | $1M |
| May 6, 2007 | Flash Flood | Harper | $1M |
| May 29, 2004 | Tornado | Anthony | $375K |
| May 12, 2004 | Tornado | Harper | $350K |
Source: NOAA Storm Events Database, county-based reports through Jun 21, 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.
Hurricanes and tropical storms
Hurricane risk by county ›Since 1900, 0 hurricanes and 1 tropical storm have passed within 65 miles of the center of Harper County. The strongest was an unnamed storm in 1900, with top winds near 40 mph about 59 miles away.
Strongest storms nearby
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Sep 10, 1900 | Unnamed | Tropical storm, 40 mph | 59 mi |
Most recent storms
| Date | Storm | Strength | Closest |
|---|---|---|---|
| Sep 10, 1900 | Unnamed | Tropical storm, 40 mph | 59 mi |
Source: NOAA National Hurricane Center best-track records (HURDAT2), 1851 to 2025 for the Atlantic and 1949 to 2025 for the eastern Pacific. A storm counts if its track passed within 65 miles of the county's center while it was a tropical storm or hurricane. Strength is the storm's top sustained wind at that point, not the wind measured in the county. Older storms over the open sea were sometimes missed.
Flood insurance in Harper 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 Harper 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; 3,020 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 |
|---|---|---|
| Sumner County | 25 | |
| Kingman County | 19 | |
| Alfalfa County, OK | 28 | |
| Barber County | 17 | |
| Grant County, OK | 30 |
Common questions about Harper County
What is the biggest natural hazard in Harper County?
Cold wave has the highest expected yearly losses in Harper County, about $1.9 million a year in FEMA's estimate. Inland flooding is second at $1.7 million.
How many federal disasters has Harper County had?
Harper County has been included in 20 federal disaster or emergency declarations for natural events since 1967, including 18 major disasters. The most recent was Severe Storms, Straight-Line Winds, Tornadoes, and Flooding in September 2026.
Is Harper County a high-risk place to live?
Its overall rating is Very Low, 42nd 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 Harper County?
Standard home insurance does not cover flooding. About 1 in 333 homes in Harper 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 Harper County had?
NOAA records list 64 tornadoes in Harper County since 1950. The strongest was an F4 tornado on May 12, 2004 near Harper. The weather service has also logged 365 hail reports and 33 floods here.
How many hurricanes have hit Harper County?
NOAA's hurricane records show 0 hurricanes and 1 tropical storm passing within 65 miles of the center of Harper County. The strongest was an unnamed storm in 1900, with winds near 40 mph.
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.