Harper County, Kansas: Natural Disaster Risk and History
Harper County, Kansas has a Very Low natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025): a score of 31.3 out of 100, higher than about 31% of US counties, with drought, hail and wildfires scoring highest of its 18 hazards and $8.8 million a year in expected losses.
OpenFEMA lists 20 federal disaster declarations that included Harper County since 1967, not counting 2 for COVID-19; the latest is DR-4943-KS (Severe Storms, Straight-Line Winds, Tornadoes, and Flooding, declared 1 September 2026). NOAA's Storm Prediction Center recorded 67 tornadoes touching Harper County from 1950 to 2025.
Live weather alerts for Kansas All official warnings Latest FEMA declarations
Population 5,481 Buildings worth $2.5 billion Area 811 sq mi Risk rank in Kansas 42 of 105 FIPS 20077
All 18 hazards, highest risk first
FEMA National Risk Index| Hazard | Risk rating | Score | Expected loss a year | How often | Events in record |
|---|---|---|---|---|---|
| Drought | Relatively Moderate | 88.0 | $1.3 million | about 7 a year | 2,065 |
| Hail | Relatively Moderate | 83.5 | $934,652 | about 1 a year | 393 |
| Wildfire | Relatively Low | 79.5 | $336,473 | about once every 505 years | — |
| Cold wave | Relatively Moderate | 70.6 | $1.9 million | about 1.5 a year | 28 |
| Ice storm | Relatively Moderate | 66.3 | $156,947 | about once every 1.3 years | 52 |
| Tornado | Relatively Low | 62.7 | $1.7 million | about once every 1.2 years | 45 |
| Strong wind | Relatively Low | 47.9 | $450,182 | about 6.4 a year | 245 |
| Heat wave | Relatively Low | 47.7 | $290,036 | about 13 a year | 170 |
| Earthquake | Very Low | 27.3 | $49,250 | rarer than once in 1,000 years | — |
| Hurricane | Very Low | 22.4 | $6,493 | about once every 116 years | 0 |
| Winter weather | Very Low | 18.4 | $13,926 | about 1 a year | 190 |
| Lightning | Very Low | 18.2 | $53,850 | about 5 a year | 72,545 strikes |
| Landslide | Very Low | 17.7 | $77 | about once every 9.6 years | — |
| Inland flooding | Very Low | 16.3 | $1.7 million | about 1.1 a year | 30 |
| Avalanche | Not Applicable | — | — | — | — |
| Coastal flooding | Not Applicable | — | — | — | — |
| Tsunami | Not Applicable | — | — | — | — |
| Volcanic activity | Not Applicable | — | — | — | — |
Score: FEMA's percentile among US counties that face the hazard (higher = more risk). Expected loss: FEMA's modelled average yearly loss to buildings, people (as a statistical value) and crops. How often: FEMA's annualised frequency of the hazard in the county; for some hazards it counts event-days, so it is a rough guide, not a forecast. "Not Applicable" means FEMA does not model that hazard here.
Federal disaster declarations 20
Most common: Severe Storm 15, Snowstorm 1, Hurricane 1, Severe Ice Storm 1.
| Decade | Declarations | Incident types |
|---|---|---|
| 1960s | 1 | Tornado |
| 1970s | 2 | Severe Storm, Flood |
| 1990s | 1 | Severe Storm |
| 2000s | 9 | Severe Storm ×7, Hurricane, Severe Ice Storm |
| 2010s | 5 | Severe Storm ×4, Snowstorm |
| 2020s | 2 | Severe Storm ×2 |
The last 10
Widest declarations that included Harper County
- Severe Winter Storms (2007, EM-3282-KS): 105 Kansas counties designated.
- Hurricane Katrina Evacuation (2005, EM-3236-KS): 105 Kansas counties designated.
- Severe Storms, Straight-Line Winds, Tornadoes, Flooding,landslides,and Mudslides (2019, DR-4449-KS): 70 Kansas counties designated.
Named storms in its declarations: Hurricane Katrina (2005).
Not counted above: 2 COVID-19 ("Biological") declarations — in 2020 every US county was included. Kansas also had 4 statewide declarations with no county list.
Tornado record since 1950 67
| Tornadoes touching the county | 67 |
|---|---|
| Strongest-rated | (E)F4 ×1 |
| Peak month | May (33) |
| Deadliest | 12 May 2004, F4, 1.2 mi path, 0 killed, 1 injured |
| Longest path | 5 May 1964, F3, 33 mi path |
| Most recent | 17 Jun 2025, EF0, 0.1 mi path |
| Deaths / injuries on those paths | 0 / 1 |
| Rating | (E)F0 | (E)F1 | (E)F2 | (E)F3 | (E)F4 | (E)F5 | Unrated |
|---|---|---|---|---|---|---|---|
| Count | 40 | 13 | 8 | 3 | 1 | 0 | 2 |
| Decade | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
|---|---|---|---|---|---|---|---|---|
| Count | 8 | 4 | 5 | 6 | 11 | 24 | 7 | 2 |
Deaths and injuries are for each tornado's whole path, which can run beyond this county. F-scale ratings before February 2007, Enhanced Fujita (EF) after.
How Harper County compares with its 5 nearest counties
| County | Distance | Overall risk | Score | Top hazard |
|---|---|---|---|---|
| Harper County (this page) | — | Very Low | 31.3 | Drought |
| Kingman County | 41 km | Very Low | 35.6 | Ice storm |
| Grant County, OK | 51 km | Very Low | 27.8 | Ice storm |
| Sumner County | 53 km | Relatively Low | 48.8 | Hail |
| Barber County | 54 km | Very Low | 40.3 | Drought |
| Alfalfa County, OK | 56 km | Very Low | 40.6 | Ice storm |
Nearest by distance between county centres. Every county in Kansas, ranked.
Vulnerability and resilience
| Social vulnerability | Relatively Moderate 58.1 |
|---|---|
| Community resilience | Relatively Moderate 58.5 |
| Community risk factor | 1.20 |
| Expected annual loss, all hazards | $8.8 million |
FEMA scales expected losses up where social vulnerability is high (people who may find it harder to prepare, evacuate or recover) and down where community resilience is high. A factor above 1 raises the risk score. For social vulnerability a high rating is worse; for resilience a high rating is better.
Prepare for Harper County's main hazards
- Right now: National Weather Service alerts for Kansas · all official warnings on Global Incident Tracker.
- Drought: Drought monitor for Kansas
- Hail: Weather alerts for Kansas
- Wildfire: US wildfires now · Wildfire smoke: what protects you
- Your property's flood zone: FEMA Flood Map Service Center ↗ — this page cannot tell you that.
- Official preparedness guidance: Ready.gov ↗ and your county emergency management office.
What this page shows, and what it misses
FEMA's National Risk Index rates a whole county against every other US county; it is a planning-level estimate for nationwide comparison, not a flood-zone map and not a substitute for a local risk assessment or the risk to one home. Declarations are presidential disaster, emergency and fire management declarations that named this county; state declarations and SBA or USDA designations are not included. Tornadoes are counted when the county is one of up to four listed on the track; 670 tornadoes that crossed a state line carry no county list in NOAA's file and are left out.
Federal Emergency Management Agency (FEMA), National Risk Index Dataset: National Risk Index Counties - v1.20.0 (December 2025). Retrieved from https://services.arcgis.com/XG15cJAlne2vxtgt/ArcGIS/rest/services/National_Risk_Index_Counties/FeatureServer/0/query on November 2, 2026, 1:20 PM EST. This product uses the Federal Emergency Management Agency’s National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Federal Emergency Management Agency (FEMA), OpenFEMA Dataset: Disaster Declarations Summaries - v2, retrieved from https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries on November 2, 2026, 1:21 PM EST. This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).
Tornado records: NOAA/NWS Storm Prediction Center, Severe Weather Database, tornadoes 1950–2025 (https://www.spc.noaa.gov/wcm/data/1950-2025_actual_tornadoes.csv, downloaded 2 November 2026). Public domain; not endorsed by NOAA. Compiled by Global Incident Tracker.
Questions about Harper County
What natural disasters is Harper County, Kansas most at risk from?
Harper County, Kansas has a Very Low natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025): a score of 31.3 out of 100, higher than about 31% of US counties, with drought, hail and wildfires scoring highest of its 18 hazards and $8.8 million a year in expected losses.
How many federal disaster declarations has Harper County had?
OpenFEMA lists 20 federal disaster declarations that included Harper County since 1967, not counting 2 for COVID-19; the latest is DR-4943-KS (Severe Storms, Straight-Line Winds, Tornadoes, and Flooding, declared 1 September 2026). Another 4 Kansas declarations were made statewide without a county list.
How many tornadoes have hit Harper County?
NOAA's Storm Prediction Center recorded 67 tornadoes touching Harper County from 1950 to 2025. The deadliest: 12 May 2004, F4, 1.2 mi path, 0 killed, 1 injured (deaths and injuries are for the whole path).
Is the National Risk Index a flood zone map?
No. The National Risk Index is a planning-level estimate for a whole county, built for nationwide comparison. It does not tell you the flood zone or the risk of a single property: for that, look up the address on FEMA's Flood Map Service Center (msc.fema.gov) and ask your local floodplain manager.