Cheyenne County, Colorado: Natural Disaster Risk and History
Cheyenne County, Colorado has a Very Low natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025): a score of 3.0 out of 100, higher than about 3% of US counties, with drought, hail and cold waves scoring highest of its 18 hazards and $3.0 million a year in expected losses.
OpenFEMA lists 7 federal disaster declarations that included Cheyenne County since 1965, not counting 2 for COVID-19; the latest is DR-4731-CO (Severe Storms, Flooding, and Tornadoes, declared 25 August 2023). NOAA's Storm Prediction Center recorded 98 tornadoes touching Cheyenne County from 1950 to 2025.
Live weather alerts for Colorado All official warnings Latest FEMA declarations
Population 1,748 Buildings worth $714 million Area 1,799 sq mi Risk rank in Colorado 63 of 64 FIPS 08017
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 | 74.2 | $783,870 | about 84 a year | 2,128 |
| Hail | Relatively Low | 57.9 | $415,929 | about 6.3 a year | 237 |
| Cold wave | Relatively Low | 35.8 | $645,158 | about 5.2 a year | 98 |
| Wildfire | Very Low | 30.4 | $17,078 | rarer than once in 1,000 years | — |
| Winter weather | Relatively Low | 27.2 | $30,536 | about 12 a year | 226 |
| Tornado | Very Low | 15.2 | $173,810 | about 1.7 a year | 69 |
| Strong wind | Very Low | 13.6 | $130,751 | about 2.5 a year | 95 |
| Earthquake | Very Low | 8.1 | $9,324 | rarer than once in 1,000 years | — |
| Lightning | Very Low | 7.4 | $27,865 | about 47 a year | 23,099 strikes |
| Inland flooding | Very Low | 4.0 | $723,314 | about once every 1.1 years | 25 |
| Ice storm | Very Low | 3.9 | $1,904 | about once every 45 years | 2 |
| Heat wave | Very Low | 3.0 | $1,488 | about once every 6.3 years | 1 |
| Landslide | Very Low | 2.0 | $2 | about once every 5.6 years | — |
| Avalanche | Not Applicable | — | — | — | — |
| Coastal flooding | Not Applicable | — | — | — | — |
| Hurricane | 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 7
Most common: Flood 1, Snowstorm 1, Coastal Storm 1, Fire 1.
| Decade | Declarations | Incident types |
|---|---|---|
| 1960s | 1 | Tornado |
| 1970s | 1 | Drought |
| 2000s | 4 | Snowstorm, Coastal Storm, Fire, Severe Storm |
| 2020s | 1 | Flood |
The last 7
Widest declarations that included Cheyenne County
- Hurricane Katrina Evacuation (2005, EM-3224-CO): 64 Colorado counties designated.
- Wildfires (2002, DR-1421-CO): 58 Colorado counties designated.
- Drought (1977, EM-3025-CO): 42 Colorado 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. Colorado also had 12 statewide declarations with no county list.
Tornado record since 1950 98
| Tornadoes touching the county | 98 |
|---|---|
| Strongest-rated | (E)F2 ×3 |
| Peak month | June (35) |
| Deadliest | 20 Jul 1958, F2, 0.1 mi path, 0 killed, 5 injured |
| Longest path | 10 May 1975, F2, 21.9 mi path |
| Most recent | 23 May 2025, unrated, 0.5 mi path |
| Deaths / injuries on those paths | 0 / 5 |
| Rating | (E)F0 | (E)F1 | (E)F2 | (E)F3 | (E)F4 | (E)F5 | Unrated |
|---|---|---|---|---|---|---|---|
| Count | 61 | 16 | 3 | 0 | 0 | 0 | 18 |
| Decade | 1950s | 1960s | 1970s | 1980s | 1990s | 2000s | 2010s | 2020s |
|---|---|---|---|---|---|---|---|---|
| Count | 3 | 2 | 7 | 7 | 15 | 26 | 21 | 17 |
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 Cheyenne County compares with its 5 nearest counties
| County | Distance | Overall risk | Score | Top hazard |
|---|---|---|---|---|
| Cheyenne County (this page) | — | Very Low | 3.0 | Drought |
| Kiowa County | 46 km | Very Low | 3.8 | Drought |
| Kit Carson County | 53 km | Very Low | 32.5 | Hail |
| Wallace County, KS | 73 km | Very Low | 1.2 | Hail |
| Greeley County, KS | 79 km | Very Low | 2.0 | Drought |
| Lincoln County | 81 km | Very Low | 7.5 | Hail |
Nearest by distance between county centres. Every county in Colorado, ranked.
Vulnerability and resilience
| Social vulnerability | Very Low 18.4 |
|---|---|
| Community resilience | Very Low 19.9 |
| Community risk factor | 0.89 |
| Expected annual loss, all hazards | $3.0 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 Cheyenne County's main hazards
- Right now: National Weather Service alerts for Colorado · all official warnings on Global Incident Tracker.
- Drought: Drought monitor for Colorado
- Hail: Weather alerts for Colorado
- Cold wave: Carbon monoxide in winter · Power outages now
- 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 Cheyenne County
What natural disasters is Cheyenne County, Colorado most at risk from?
Cheyenne County, Colorado has a Very Low natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025): a score of 3.0 out of 100, higher than about 3% of US counties, with drought, hail and cold waves scoring highest of its 18 hazards and $3.0 million a year in expected losses.
How many federal disaster declarations has Cheyenne County had?
OpenFEMA lists 7 federal disaster declarations that included Cheyenne County since 1965, not counting 2 for COVID-19; the latest is DR-4731-CO (Severe Storms, Flooding, and Tornadoes, declared 25 August 2023). Another 12 Colorado declarations were made statewide without a county list.
How many tornadoes have hit Cheyenne County?
NOAA's Storm Prediction Center recorded 98 tornadoes touching Cheyenne County from 1950 to 2025. The deadliest: 20 Jul 1958, F2, 0.1 mi path, 0 killed, 5 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.