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Harper County, Kansas

Natural disaster risk, federal disaster history and flood insurance facts.

Very Low overall risk
42nd of 105highest risk in Kansas
$9Mexpected losses a year
20federal declarations
1 in 333homes with flood insurance
Photo: Bold Frontiers, CC BY 2.0

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

Cold wave

Moderate
$1.9 million a yearExpected losses. Damaging events about once a year.
  • Insulate pipes in outside walls, crawl spaces and garages.
  • Know how to shut off the main water valve.
$1.7 million a yearExpected losses. Damaging events about once a year.
  • 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.
$1.7 million a yearExpected losses. Damaging events about once a year.
  • 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.
HazardRatingScoreExpected loss a year
Cold waveModerate70.6
$2M
Inland floodingVery Low16.3
$2M
TornadoLow62.7
$2M
DroughtModerate88.0
$1M
HailModerate83.5
$935K
Strong windLow47.9
$450K
WildfireLow79.5
$336K
Heat waveLow47.7
$290K
Ice stormModerate66.3
$157K
LightningVery Low18.2
$54K
EarthquakeVery Low27.3
$49K
Winter weatherVery Low18.4
$14K
HurricaneVery Low22.4
$6K
LandslideVery Low17.7
$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

Severe Storm15
Tornado1
Flood1
Severe Ice Storm1
Hurricane1
Snowstorm1

Most recent

Sep 1, 2026Severe Storms, Straight-Line Winds, Tornadoes, and FloodingMajor disaster
Sep 11, 2025Severe Storms, Straight-Line Winds, Tornadoes, and FloodingMajor disaster
Jun 20, 2019Severe Storms, Straight-Line Winds, Tornadoes, Flooding,Landslides,And MudslidesMajor disaster
Jul 20, 2015Severe Storms, Tornadoes, Straight-Line Winds, and FloodingMajor disaster
Oct 22, 2013Severe Storms, Straight-Line Winds, Tornadoes, and FloodingMajor disaster
Apr 26, 2013SnowstormMajor disaster
May 24, 2012Severe Storms, Tornadoes, Straight-Line Winds, and FloodingMajor disaster
Jun 25, 2009Severe Storms, Flooding, Straight-Line Winds, and TornadoesMajor disaster
Oct 31, 2008Severe Storms, Flooding, and TornadoesMajor disaster
Jul 9, 2008Severe Storms, Flooding and TornadoesMajor disaster
Show all 20
Dec 12, 2007Severe Winter StormsEmergency
Jul 2, 2007Severe Storms and FloodingMajor disaster
May 6, 2007Severe Storms, Tornadoes, and FloodingMajor disaster
Sep 10, 2005Hurricane Katrina EvacuationEmergency
Feb 8, 2005Severe Winter Storms, Heavy Rains, and FloodingMajor disaster
Feb 6, 2002Severe Winter Ice StormMajor disaster
Nov 5, 1998Ks-Flooding 10/31/98Major disaster
Sep 28, 1973Severe Storms, Tornadoes & FloodingMajor disaster
May 2, 1973Severe Storms & FloodingMajor disaster
Jul 18, 1967Tornadoes, Severe Storms & FloodingMajor disaster

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.

64tornadoes
365hail reports, largest 4.5 inches
245damaging thunderstorm winds
33floods and flash floods

Strongest tornadoes

DateStrengthNearHurt / killed
May 12, 2004F4Harper1 / 0
May 19, 2012EF3Duquoin0 / 0
May 19, 2012EF3Attica0 / 0
May 29, 2004F2Anthony0 / 0
May 12, 2004F2Attica0 / 0

Most damaging storms

DateTypeNearDamage
Apr 26, 2009Flash FloodCorwin$5M
May 29, 2004TornadoFreeport$1M
Jul 20, 2009HailRunnymede$1M
May 6, 2007Flash FloodHarper$1M
May 29, 2004TornadoAnthony$375K
May 12, 2004TornadoHarper$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.

0hurricanes
0major hurricanes (Category 3+)
1tropical storms
1900most recent: unnamed storm

Strongest storms nearby

DateStormStrengthClosest
Sep 10, 1900UnnamedTropical storm, 40 mph59 mi

Most recent storms

DateStormStrengthClosest
Sep 10, 1900UnnamedTropical storm, 40 mph59 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 ›
0.3%of homes have federal flood insurance (13 policies)
0%of homes in mapped high-risk flood zones are insured
$0paid on 1 flood claims since 1978
1992costliest year

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

$83,800median home value (Kansas $217,200, US $332,700)
1956median year homes were built (Kansas 1976, US 1980)
79%of homes built before 1980, before many modern wind, quake and flood building rules
7.5%of homes are mobile homes, which are the least safe in tornadoes and high winds

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 countiesOverall riskTop hazard
Johnson CountyHighInland flooding
Sedgwick CountyHighInland flooding
Shawnee CountyModerateInland flooding
Wyandotte CountyModerateInland flooding
Douglas CountyLowInland flooding
Leavenworth CountyLowInland flooding
Riley CountyLowInland flooding
Butler CountyLowInland flooding

Neighboring counties

CountyOverall riskDeclarations
Sumner CountyLow25
Kingman CountyVery Low19
Alfalfa County, OKVery Low28
Barber CountyVery Low17
Grant County, OKVery Low30

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.