Cheyenne

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond this area.
2. Weak tornadoes were under-recorded before Doppler radar coverage became national in the early 1990s, so earlier decades read low. Ratings use the Fujita scale before February 2007 and the Enhanced Fujita scale after.

Storm Prediction Center severe weather database, 1950 to 2025.

Every large fire

1. Large fires mapped by the Monitoring Trends in Burn Severity program since 1984: 1,000 acres or more in the West, 500 or more in the East. Prescribed burns are excluded. Acres here are the part of each perimeter inside this place.

Monitoring Trends in Burn Severity (USGS and U.S. Forest Service), 1984 to 2026.

Smoke overhead

1. A smoke day is a date on which a smoke plume traced by NOAA Hazard Mapping System analysts from satellite imagery covered this place's point (the county's population centre or the city centre). Counts here are of medium or heavy smoke. Since 2018 analysts have often drawn light smoke as one area over most of the continent, so light-smoke counts are not comparable from year to year. The plumes show smoke anywhere in the air above, not air quality at the ground, and smoke hidden by cloud is missed.

NOAA Hazard Mapping System smoke analysis, 2011 to 2026, retrieved October 30, 2026.

Flood insurance figures are for Laramie County, the county that contains Cheyenne.

Claims by ZIP code

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).

OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026. NOAA Storm Events through 2026.

River crests

River gauges in Laramie County, the county that contains Cheyenne.

River gauges

1. Crests are the highest and the recent crests the National Weather Service lists for each river gauge in the county that has a flood stage, not every flood. Flood categories use each gauge's current flood stages; crests from before levees, dams or channel changes may not be comparable. Crests measured on an old datum are left out of the rankings.

NOAA National Water Prediction Service gauge records, retrieved October 30, 2026.

The drought index is for Laramie County, the county that contains Cheyenne.

1. The Palmer Drought Severity Index is computed by NOAA each month from the county's average temperature and precipitation, relative to the county's own climate. Zero is normal; -3 or lower is severe drought and -4 or lower extreme drought. It describes the long-term balance of moisture, not water supply or crop losses.

NOAA NCEI nClimDiv county Palmer Drought Severity Index, 1895 to September 2026, issued October 6, 2026.

1. Earthquakes of magnitude 2.5 or more in the USGS Comprehensive Catalog since 1900. Within 50 miles means the epicentre lies within 50 miles of the city centre.
2. Small earthquakes were under-recorded before the modern seismic networks of the 1970s and are still missed in remote areas, so early decades read low. Magnitudes are as the catalogue reports them and mix scales (moment, local and body-wave).

USGS ANSS Comprehensive Earthquake Catalog, 1900 to present, retrieved October 30, 2026.

Mapped landslides

Landslides mapped in Laramie County.

Mapped by WY WSGS (13).

1. Landslides mapped in the USGS compilation of landslide inventories across the United States (version 3.0, 2025), rated probable or better. The compilation joins inventories made by federal and state agencies for different purposes and areas, so the number mapped in a county reflects how closely it has been surveyed as much as how often its slopes fail. An area with few records may simply not have been mapped. Deaths are as recorded in the inventories; a slide listed in two inventories is counted once.

USGS Landslide Inventories across the United States, version 3.0, retrieved October 27, 2026.

More event types since 1996

Costliest events since 1996

1. Aug 26, 2002Hail$30.0 million
   National Weather Service narrative

   Hail from 1 inch up to 2.75 inches in diameter fell over mainly the central and western parts of the city of Cheyenne, WY. Significant damage was reported to automobiles and roofs.

2. Jul 13, 1996Hail$4.0 million
   National Weather Service narrative

   Hail, from three quarters of an inch to one and one-half inchesfell in the Cheyenne area. Damage was done to windows, roofsand trees.

3. Jul 31, 1996Hail$3.4 million
   National Weather Service narrative

   Hail, between one inch and two and one-half inches fell in Cheyenne.

4. Aug 29, 1996Hail$2.4 million
   National Weather Service narrative

   Large hail broke some car windows in Cheyenne and damaged numerous roofs.

5. Aug 1, 2025Hail$1.0 million
   National Weather Service narrative

   Emergency manager reported base ball sized hail in Cheyenne.|Estimated property damage citywide from all reports with this event total at least $1 million per Laramie County EMA.

6. Jun 25, 2026Thunderstorm Wind$1.0 million
   National Weather Service narrative

   NWS Employee sent photos of a derailed train with about 40 cars loaded with shipping containers on their side. Near exit 4 on I-25. Derailed train could be seen clearly from the Interstate for days. Time is the estimated time of QLCS moving through that area.

7. Jul 13, 1996Hail$1.0 million
   National Weather Service narrative

   Large hail caused extensive crop damage to the north of Albin.

8. Dec 19, 2025High Wind, South Laramie Range Foothills$500,000
   National Weather Service narrative

   Most observation sites across the southern Laramie Range foothills reported strong wind gusts between 60 to 72 MPH. Peak gust of 72 MPH was measured at Whitaker, north of Cheyenne. Locally higher gusts are possible. Laramie County EM shared photos of several train cars blown over and derailed near Federal.

9. Jun 8, 2024Hail$400,000
   National Weather Service narrative

   A trained weather spotter measured 2-inch diameter hail 9 miles SSW of Hillsdale.

10. Mar 1, 2024Wildfire, South Laramie Range Foothills$250,000
    National Weather Service narrative

    Around 12 PM MST, received reports of a grass fire west of Cheyenne that was rapidly spreading with strong southwest winds off the South Laramie Range gusting 30 to 40 MPH. Approximately 6,619 acres were burned 5 miles west of Cheyenne with multiple structures damaged or destroyed. Two evacuation orders were given by local officials including the Happy Valley subdivision. No total loss of primary structures were reported, but numerous outbuildings were damaged or destroyed with one completely loss garage.

1. Storm Events records before 1996 cover only tornadoes, thunderstorm wind and hail. Damage figures are as reported by the National Weather Service at the time, not adjusted for inflation.

NOAA NCEI Storm Events Database, 1950 to 2026, issued October 26, 2026.

All-time high

100°F2 times, most recently Jun 23, 1954

All-time low

−34°FFeb 8, 1936

Warmest night

68°FJul 31, 1960

Coldest day

−21°FJan 11, 1963

Wettest day

6.06 inAug 1, 1985

Snowiest day

22.7 inMar 14, 2021

Hottest year

2024mean 49.3°F

Coldest year

1951mean 42.9°F

Wettest year

194223.69 in

Driest year

19645.94 in

Snowiest season

121.5 in1979-80

Station Cheyenne (USW00024018), 6,193 ft elevation, 1.7 miles from the city centre. Daily records from 1915 to October 26, 2026; 100.0% of days in the last 30 years are complete. Records at a single station can differ from a city’s official threaded record, which may combine several stations.

NOAA NCEI Global Historical Climatology Network Daily.

Declarations for Laramie County.

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).

OpenFEMA Disaster Declarations Summaries, retrieved October 30, 2026. Statewide declarations are not listed.

• Tornadoes NOAA Storm Prediction Center severe weather database, through 2025.
• Tropical cyclones NOAA National Hurricane Center HURDAT2 (Atlantic; Northeast and Central Pacific), through 2025.
• Wildfire USGS/USFS Monitoring Trends in Burn Severity, through 2026.
• Storm events NOAA NCEI Storm Events Database, through 2026.
• Flood insurance OpenFEMA NFIP Redacted Claims v3, refreshed August 4, 2026.
• Declarations OpenFEMA Disaster Declarations Summaries v2, retrieved October 30, 2026.
• Weather records NOAA NCEI Global Historical Climatology Network Daily, station USW00024018.
• River crests NOAA National Weather Service, National Water Prediction Service river gauges, retrieved October 30, 2026.
• Drought NOAA NCEI nClimDiv county Palmer Drought Severity Index, through September 2026.
• Smoke NOAA NESDIS Hazard Mapping System smoke analysis, retrieved October 30, 2026.
• Landslides USGS Landslide Inventories across the United States, version 3.0 (2025).
• Earthquakes USGS ANSS Comprehensive Earthquake Catalog (ComCat), retrieved October 30, 2026.

Joins, thresholds and known limits are set out in the methodology. Found an error? Report it. Page built October 30, 2026.