Iron County

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Iron 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 UT GRC (442), NASA (1), 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 19, 2025Wildfire, Southern Mountains$35.0 million
   National Weather Service narrative

   The Forsyth Fire started on Thursday, June 19th, 2025. Initial reports from fire officials state the fire is suspected to have originated as a holdover from lightning in the Pine Valley Mountains. A long stretch of hot, dry, and windy conditions prevailed ahead of the fire's discovery on the 19th. A nearby RAWS station in Pine Valley (TT900) observed Red Flag conditions (wind gusts >25 mph and RH <15%) for about 16 hours from the afternoon of the 19th to the early morning hours on the 20th. A mandatory evacuation order for the Pine Valley community was issued at 9:21 PM on the 19th. Red Flag conditions redeveloped late morning on the 20th, with strong southwest winds eventually…

2. Oct 8, 2011Debris Flow, Southern Mountains$12.0 million
   National Weather Service narrative

   A landslide occurred 8 miles east of Cedar City, along Utah State Route 14. The landslide occurred sometime before 5 a.m. on the morning of October 8th, when the slide was discovered and the road was closed by the Utah Department of Transportation. The landslide was 1,700 feet in length, and destroyed an 800 foot section of State Route 14. The dirt on the road was as much as 100 feet deep in some places, and it was estimated that the slide consisted of 1.5 million cubic yards of dirt, rock, and debris. This led to the closing of a 12-mile stretch of State Route 14, which is a widely used road in southern Utah, particularly for tourists trying to get to Cedar Breaks National…

3. Aug 1, 2021Flash Flood$9.0 million
   National Weather Service narrative

   Widespread flash flooding occurred in Enoch and Cedar City, with up to 300 homes damaged by flood waters. Water rescues were performed, and cars were swept off the road. Interstate 15 was closed during the event. Numerous roads were eroded by floodwaters, and Fiddlers Canyon was reported underwater.

4. Jun 17, 2017Wildfire, Southern Mountains$2.0 million
   National Weather Service narrative

   The Brianhead Fire started on June 17, when a man used a weed torch at his Brian Head area cabin, and the fire became out of control. The fire burned 71,675 acres, with most of the growth in the first two weeks of the fire. The Brianhead Fire destroyed 13 homes and 13 minor structures. A priority sage grouse habitat was also impacted east of the fire perimeter in the Panguitch watershed area. Costs associated with the fire were approximately $36.6 million, with rehabilitation efforts projected to cost double or triple that amount. At the height of the fire, approximately 1,831 personnel were fighting to contain the wildfire, and 1,562 people were evacuated from 11 communities in…

5. Jul 1, 2017Wildfire, Southern Mountains$2.0 million
   National Weather Service narrative

   The Brianhead Fire started on June 17, when a man used a weed torch at his Brian Head area cabin, and the fire became out of control. The fire burned 71,672 acres, with most of the growth in the first two weeks of the fire. The Brianhead Fire destroyed 13 homes and 13 minor structures. A priority sage grouse habitat was also impacted east of the fire perimeter in the Panguitch watershed area. Costs associated with the fire were approximately $36.6 million, with rehabilitation efforts projected to cost double or triple that amount. At the height of the fire, approximately 1,831 personnel were fighting to contain the wildfire, and 1,562 people were evacuated from 11 communities in…

6. Jun 27, 2012Wildfire, Southwest Utah$1.5 million
   National Weather Service narrative

   The New Harmony Fire started on June 27th near New Harmony, Utah, due to a water pump malfunction on private land. The fire burned 1,957 acres before it was 100% contained on June 30th. 7 residences were destroyed, 22 non-residential buildings were destroyed, and numerous vehicles were heavily damaged. At least 60 power poles were damaged in the fire, and there was one injury, a firefighter who received first and second degree burns. In addition to physical damages, fire suppression costs totaled $421,000.

7. Aug 17, 2012Flash Flood$1.5 million
   National Weather Service narrative

   Major flash flooding occurred in the cities of Enoch and Cedar City on the afternoon of August 17th. Enoch had the most significant damage, with 110 houses damaged by flood waters, while Cedar City mostly experienced street flooding. About 30 of those 110 houses experienced major damage, typically over $30,000 per house, while the rest had more minor damage. Flood waters and some sewage poured into many basements, as well as some ground level floors. The water broke windows and destroyed carpets, walls, and personal belongings in many of the homes.

8. Feb 13, 2024Winter Weather, Southwest Utah$1.0 million
   National Weather Service narrative

   Snow squall. Conditions in the snow squall included flash freeze conditions on I-15 in southern Iron County, visibilities of 1/2 mile or less between approximately 11:40 a.m. and 2 p.m., and snowfall rates of 3 inches per hour.||Multiple crashes, one involving at least 11 vehicles, were reported, with the northbound lanes of I-15 closed for several hours. There were several other crashes throughout the Cedar City area.

9. Aug 17, 2023Flash Flood$1.0 million
   National Weather Service narrative

   Heavy rain produced flash flooding in Cedar City, impacting the Cedar City Hospital, Iron County Jail, and homes.

10. Jul 15, 2021Flash Flood$1.0 million
    National Weather Service narrative

    Flash flooding near Lund derailed a Union Pacific Railroad train, forcing 14 cars off of the tracks. Train tracks were determined to be washed out at a small bridge crossing over a normally dry wash. After the train derailed, injured train operators were trapped on top of the overturned train as flood waters continued to rise. In addition, emergency responders were washed off of the road to the crash site by the flood waters, delaying response to the injured train operators.

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°FJul 7, 1989

All-time low

−26°FJan 31, 1951

Warmest night

73°F2 times, most recently Aug 8, 2003

Coldest day

3°FDec 22, 1990

Wettest day

2.25 inJul 27, 2013

Snowiest day

14.9 inDec 7, 1982

Hottest year

1981mean 53.7°F

Coldest year

1949mean 47.7°F

Wettest year

196716.94 in

Driest year

20204.80 in

Snowiest season

104.7 in1972-73

Station Cedar City Airport (USW00093129), 5,590 ft elevation, 1.1 miles from the population centre. Daily records from 1948 to October 26, 2026; 99.8% 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 USW00093129.
• 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.