Park County

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Park County: 0.
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.

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

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.

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.

Every earthquake of magnitude 4 or more within 50 miles

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 county boundary (or inside the county).
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.

Volcanoes within 100 miles

1. U.S. volcanoes within 100 miles, from the USGS Volcano Hazards Program. The threat category is the USGS 2018 National Volcanic Threat Assessment, which ranks volcanoes by how hazardous their past eruptions were and how many people and how much infrastructure lie near them. It is not a forecast of eruption.

USGS Volcano Hazards Program, retrieved October 30, 2026.

Mapped landslides

Mapped by WY WSGS (4,473), NASA (12), USGS Conterminous (1).

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. Jun 12, 2022Flood$25.0 million
   National Weather Service narrative

   Part of the northeastern entrance road to Yellowstone National Park was washed out near the Soda Butte Picnic Area. There were also mudslides and downed trees in the area. Yellowstone National Park press releases estimated preliminary repair costs to be 25 million for the northeast entrance road.

2. Nov 15, 2021Wildfire, Cody Foothills$2.0 million
   National Weather Service narrative

   Very strong wind downed a power line into a tree igniting a wildfire around 2215MST Monday, November 15, in the Line Creek area north of Clark. The starting point appeared to be in the 800 block of County Road 1AB. The wildfire rapidly spread through the Line Creek drainage, mainly the north side of the creek, as well as the area around Gunpowder Road as westerly wind gusting between 60 and 80 mph drove the flames eastward. The blaze, which eventually burned at least 300 acres, destroyed three homes, seven outbuildings, and a bridge. The fire was also responsible for the death of a 61-year-old woman who succumbed to smoke inhalation on Tuesday, November 16. Firefighters responded…

3. Oct 15, 1998Winter Storm, Yellowstone National Park Mt Id / W Park / N Teton$1.0 million
   National Weather Service narrative

   A severe winter storm moved across Western and Central Wyoming dumping locally heavy snow from southern Yellowstone National Park to the Casper area. The main brunt of the storm was felt in the Casper area where up to 17 inches of snow fell. Strong winds accompanied the heavy snow causing widespread tree damage and power outages. Poor visibilities and icy road conditions caused numerous vehicle accidents.

4. Aug 2, 2016Wildfire, Cody Foothills$500,000
   National Weather Service narrative

   The Whit Fire exploded near Wapiti, Wyoming, about 12 miles west of Cody, on Tuesday, August 2. The fire grew to nearly 3,000 acres in size during the first 24 hours and evacuations were ordered for several areas. Active fire growth continued during the first week of August with the fire reaching nearly 10,000 acres by Friday morning, August 5. Approximately 700 people were assigned to the fire and aerial tactics were employed in an effort to slow the fire spread. Evacuations were lifted on Saturday morning, August 6. The fire was largely contained by Thursday, August 11, and basically out by August 18. All said, the Whit Fire torched 12,387 acres and destroyed one home and seven…

5. Jun 9, 2000Hail$500,000
   National Weather Service narrative

   Severe thunderstorm produced swath of large hail from the Cody area northeast to Powell and into extreme northwest Big Horn County. Largest hail apparently fell over south and southeast parts of Powell, with official reports of golfball size and unofficial reports of softball size. Property damage is an estimate. Preliminary crop damage estimates expected to reach into the millions of dollars. Severe damage to sugar beet, barley, and bean crops. Wind gusts from 60 to 65 mph were also reported with the storm in the Powell area.

6. Jul 10, 2001Flash Flood$400,000
   National Weather Service narrative

   Flash flooding along Line Creek. Mobile home, outbuildings destroyed; homes flooded and roads and bridges washed out in the Line Creek subdivision. Property damage estimated by emergency management official.

7. Nov 12, 2007High Wind, Cody Foothills$300,000
   National Weather Service narrative

   A strong mountain wave produced damaging west wind over the Absaroka Mountains and adjacent Cody Foothills during the overnight hours of November 12 and 13. Another mountain wave developed along and in the lee of the Bighorn Mountains early on the 13th. Strong west to southwest wind also occurred across favored locations in central Wyoming in response to a strengthening surface pressure gradient.||Frequent wind gusts of 50 mph or more were recorded at many sites. Locations in Park, Johnson, Natrona, and Fremont counties observed winds in excess of 75 mph. About seven miles northeast of Cody the strong wind was able to move an open-sided 50x12x10-foot shed 20 feet from its…

8. Jul 18, 2004Debris Flow, Yellowstone National Park$275,000
   National Weather Service narrative

   A thunderstorm produced very heavy rain late in the evening over Sylvan Pass. A slide of mud and earth oozed onto U.S. Highway 16 about 6 miles west of Yellowstone National Park's east entrance. Four feet of mud and debris trapped sixteen people in four vehicles for three hours. The debris flow was estimated to contain 30,000 tons of mud and rock and was in some cases 10 feet deep. The east entrance of Yellowstone National Park was closed for four days following the mudslide. No injuries occurred.

9. Jul 16, 2002Flash Flood$275,000
   National Weather Service narrative

   Strong thunderstorms caused flash flooding across portions of southern Park County. The first area of flash flooding and damage was reported near Valley. Heavy rain washed out bridges and portions of gravel roads. Also, the heavy rain and runoff resulted in 4 to 5 feet of mud on the roads. The second area of flash flooding and damage occurred between Cody and Wapiti, along Rattlesnake Creek. A 10 foot wall of mud and rock slid through cabins. Also, 1.03 inches of rain fell in Wapiti. The third area of flash flooding and damage occurred west of Meeteetse, near Pitchfork Ranch and Poverty Flats. Two to three bridges were damaged, as well as a 200 yard long, 6 feet wide portion of a…

10. Jul 3, 2023Thunderstorm Wind$200,000
    National Weather Service narrative

    A thunderstorm produced a microburst that caused damage in the Lake Village area of Yellowstone Park, along the north shore of Yellowstone Lake. Several hundred trees were downed by the wind. Some trees landed on vehicles. The Lake Yellowstone Hotel also suffered minor damage from falling trees. Some portions of the Lake Village had no power for two days. Damage estimates based on Yellowstone National Park News Release dated July 5, 2023.

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

105°F3 times, most recently Jul 13, 2026

All-time low

−46°FFeb 8, 1936

Warmest night

77°FJul 24, 1936

Coldest day

−24°F2 times, most recently Feb 2, 1989

Wettest day

2.72 inMay 30, 2022

Snowiest day

21.0 inApr 17, 1941

Hottest year

1934mean 51.8°F

Coldest year

1916mean 41.5°F

Wettest year

202317.67 in

Driest year

19563.58 in

Snowiest season

81.8 in2013-14

Station Cody (USC00481840), 5,280 ft elevation, 10.3 miles from the population centre. Daily records from 1915 to September 30, 2026; 98.1% 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.

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.

Neighbouring counties

• 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 USC00481840.
• 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.
• Volcanoes USGS Volcano Hazards Program, U.S. volcanoes and 2018 threat assessment.
• 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.