Wayne County

Population 2,587 (2025) 2,461 sq mi

Property owners in Wayne County have filed 2 federal flood insurance claims since 1978, 24th most of 29 counties in Utah.

Hazard fingerprint for Wayne County Tornado: 8th percentile. Tropical: 0th percentile. Wildfire: 6th percentile. Flood: 45th percentile. Hail & wind: 1th percentile. Heat: 13th percentile. Cold: 0th percentile. Winter: 75th percentile. TORTROPFIREFLOODSEVEREHEATCOLDWINTER

Hazard fingerprint Each spoke is this county’s percentile among U.S. counties where that hazard occurs. How it is computed

2026
  • Tornado damage paths since 19508
  • Wildfire burn scars since 19841

At a glance

The record for Wayne County in eight numbers. Each links to its section below.

Flood insurance claims

2

24th of 29 in Utah

$0 paid since 1983

Details

Tornadoes since 1950

8

6th of 29 in Utah

60% more than the typical Utah county

Details

Acres burned since 1984

2,062

29th of 29 in Utah

1 large fire; the largest was Lost Lake, 2012

Details

Strongest tornado

F1

April 4, 1993, 0.1 mile path

Largest earthquake within 50 mi

6.6magnitude

November 13, 1901, 30.3 miles away

Details

Federal disaster declarations

4

Most recent: Covid-19 Pandemic, 2020

Details

Record high

97°F

June 16, 2021

Details

Record low

−17°F

February 6, 1989

Details

Tornadoes

About one every 9.5 years since 1950, none rated F3/EF3 or stronger.

Strongest

April 4, 1993

F1, 0.1 mile path

20 yards wide.

Most recent

Wednesday, October 6, 2010

EF0, 1.2 mile path

16 years ago.

Tornadoes by decade Doppler radar era² 1950s: 0 1960s: 3 3 1970s: 0 1980s: 2 2 1990s: 1 1 2000s: 1 1 2010s: 1 1 2020s: 0 1950s1960s1970s1980s1990s2000s2010s2020s
Recorded tornadoes per decade. The 2020s are incomplete.
Tornadoes by month J: 0 F: 0 M: 0 A: 1 M: 3 3 J: 0 J: 1 A: 1 S: 1 O: 1 N: 0 D: 0 JFMAMJJASOND
By month of occurrence, all years.

Every recorded tornado

Tornadoes in Wayne County since 1950
Oct 6, 2010EF01.21000
Sep 12, 2002F00.22000
Apr 4, 1993F10.12000
Aug 31, 1986F00.21000
Jul 24, 1981F00.21000
May 31, 1969F00.11000
May 31, 1969F00.11000
May 31, 1969F00.11000
  1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Wayne 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.

Hurricanes and tropical storms

No tropical storm or hurricane has tracked within 100 miles since records began in 1851.

Wildfire and smoke

2,062 acres burned in 1 large fire since 1984, equal to 0.1% of the land.

Largest

June 3, 2012

Lost Lake Fire, 2,061 acres

2,062 acres inside Wayne County.

Most recent

June 3, 2012

Lost Lake Fire

2,061 acres in total.

Acres burned since 1984, cumulative 2012: 2,062 2,062 acres 198519901995200020052010201520202025
Running total of acres burned inside the county (line) and each year’s acres (bars).

Every large fire

Large wildfires since 1984
Lost Lake20122,0622,061
  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

Smokiest year

2021: 35 days

Heavy smoke on 14 days in 2021, the most of any year.

Last 10 years

11.6 days a year

Medium or heavy smoke, 2016 to 2025.

2025

21 days

Medium or heavy smoke. 19 so far in 2026.

Days with medium or heavy smoke overhead, by year 2011: 0 2012: 7 2013: 4 2014: 0 2015: 2 2016: 2 2017: 4 2018: 13 2019: 5 2020: 17 2021: 35 35 2022: 7 2023: 4 2024: 8 2025: 21 201120122013201420152016201720182019202020212022202320242025
Days each year on which a satellite-traced plume of medium or heavy smoke covered the county’s population centre, 2011 to 2025.
  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.

Floods and flood insurance

2 federal flood insurance claims since 1983, with $0 paid.

Federal flood insurance claims by year
Claims per year since 1983. Years with fewer than five claims are not shown.

Flood events since 1996

  • Flash Flood163
  • Flood5
  • Heavy Rain4

5 deaths recorded in flood events since 1996.

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.

Drought

In severe drought or worse for 169 of 1,581 months since 1895 (11%); the longest spell lasted 21 months.

169

Months in severe drought or worse since 1895

56

Months in extreme drought

11%

Share of all months, severe or worse

Lowest reading

June 2026

−7.19, extreme drought

Longest severe spell

21 months

April 1989 to December 1990.

Latest month

September 2026

−5.53, extreme drought

Months in severe drought or worse, by year 1895: 0 1896: 0 1897: 0 1898: 0 1899: 0 1900: 1 1901: 2 1902: 0 1903: 0 1904: 0 1905: 0 1906: 0 1907: 0 1908: 0 1909: 0 1910: 0 1911: 0 1912: 0 1913: 0 1914: 0 1915: 0 1916: 0 1917: 0 1918: 0 1919: 0 1920: 0 1921: 0 1922: 0 1923: 0 1924: 0 1925: 0 1926: 0 1927: 0 1928: 0 1929: 0 1930: 0 1931: 0 1932: 0 1933: 0 1934: 5 1935: 1 1936: 0 1937: 0 1938: 0 1939: 0 1940: 3 1941: 0 1942: 0 1943: 1 1944: 0 1945: 0 1946: 0 1947: 0 1948: 0 1949: 0 1950: 3 1951: 7 1952: 0 1953: 0 1954: 4 1955: 3 1956: 12 12 1957: 3 1958: 0 1959: 7 1960: 0 1961: 0 1962: 0 1963: 3 1964: 0 1965: 0 1966: 0 1967: 0 1968: 0 1969: 0 1970: 0 1971: 0 1972: 3 1973: 0 1974: 4 1975: 0 1976: 0 1977: 12 1978: 0 1979: 0 1980: 0 1981: 0 1982: 0 1983: 0 1984: 0 1985: 0 1986: 0 1987: 0 1988: 0 1989: 9 1990: 12 1991: 1 1992: 0 1993: 0 1994: 3 1995: 0 1996: 2 1997: 0 1998: 0 1999: 0 2000: 5 2001: 0 2002: 5 2003: 5 2004: 0 2005: 0 2006: 0 2007: 0 2008: 0 2009: 4 2010: 0 2011: 0 2012: 4 2013: 0 2014: 0 2015: 0 2016: 0 2017: 1 2018: 9 2019: 0 2020: 5 2021: 7 2022: 4 2023: 0 2024: 0 2025: 10 18951905191519251935194519551965197519851995200520152025
Months each year with a Palmer index of −3 or lower, 1895 to 2025. Twelve means the whole year.
  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.

Earthquakes, volcanoes and landslides

22 earthquakes of magnitude 4 or more within 50 miles since 1900; the largest was magnitude 6.6 in 1901.

17

Magnitude 2.5+ inside the county since 1973

187

Magnitude 3+ within 50 miles since 1973

22

Magnitude 4+ within 50 miles since 1900

4

Magnitude 5+ within 50 miles since 1900

Largest within 50 miles

November 13, 1901

Magnitude 6.6

Near Marysvale, Utah; 30.3 miles away.

Most recent, magnitude 3 or more

May 3, 2026

Magnitude 3.0

20 km ENE of Panguitch, Utah; 26.6 miles away.

Earthquakes of magnitude 3 or more within 50 miles, by year 1973: 1 1974: 1 1975: 2 1976: 1 1977: 0 1978: 2 1979: 1 1980: 0 1981: 0 1982: 4 1983: 2 1984: 1 1985: 1 1986: 3 1987: 4 1988: 3 1989: 7 1990: 4 1991: 4 1992: 6 1993: 7 1994: 4 1995: 1 1996: 1 1997: 3 1998: 18 1999: 22 22 2000: 3 2001: 9 2002: 3 2003: 3 2004: 0 2005: 8 2006: 0 2007: 1 2008: 1 2009: 3 2010: 5 2011: 9 2012: 7 2013: 1 2014: 2 2015: 3 2016: 1 2017: 1 2018: 6 2019: 2 2020: 2 2021: 3 2022: 2 2023: 1 2024: 1 2025: 1 19731978198319881993199820032008201320182023
Per year, 1973 to 2025.

Every earthquake of magnitude 4 or more within 50 miles

Earthquakes of magnitude 4 or more within 50 miles
Oct 3, 20204.431.65.215 km SW of Circleville, Utah
Feb 20, 20194.041.15.18 km SW of Kanosh, Utah
Jul 4, 20154.139.92.1Utah
Apr 11, 20124.227.09.216 km NNE of Bryce Canyon City, Utah
Jan 3, 20114.628.06.910 km NW of Circleville, Utah
Jul 19, 20014.219.64.131 km NNE of Fremont, Utah
Oct 22, 19994.149.13.520 km SE of Minersville, Utah
Jan 2, 19984.437.77.410 km ESE of Beaver, Utah
Sep 5, 19944.026.03.912 km SSW of Circleville, Utah
Jun 24, 19924.322.03.330 km WSW of Emery, Utah
Jan 26, 19914.042.913.922 km SE of Escalante, Utah
Feb 27, 19894.123.613.825 km ESE of Salina, Utah
Jan 29, 19895.223.311.825 km SE of Salina, Utah
Nov 4, 19744.326.410.614 km SW of Marysvale, Utah
Jul 16, 19734.246.16.216 km ESE of Sterling, Utah
Jan 3, 19724.623.34.34 km SSW of Elsinore, Utah
Oct 4, 19675.016.86.210 km NE of Marysvale, Utah
Jun 5, 19624.517.420.515 km SW of Antimony, Utah
Sep 29, 19215.222.7—0 km SSW of Central Valley, Utah
Jan 11, 19104.824.1—Near Elsinore, Utah
Jan 10, 19104.824.1—Near Elsinore, Utah
Nov 13, 19016.630.3—Near Marysvale, Utah
  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

Volcanoes within 100 miles
Black Rock Desert Volcanic Field51.1Moderate5,906
Markagunt Plateau Volcanic Field59.9Low9,318
  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

262

Landslides mapped, probable or better

0

With a recorded date

2

Source inventories

Mapped by UT GRC (261), 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.

Severe weather and other events

326 events in the National Weather Service record, 314 of them since 1996.

7

Hail reports, 1 inch or larger

1

Hail, 2 inches or larger

3

Damaging gusts, 58 mph+

116

Winter weather events since 1996

2

Heat events since 1996

0

Cold events since 1996

Largest hail

June 10, 1997

2.00 inches

Strongest measured or estimated gust

July 12, 1965

64 mph

More event types since 1996

Other Storm Events types since 1996
Debris flows100Oct 8, 2011
Avalanches100Feb 7, 2019

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. Oct 6, 2006Flash Flood$8.0 million
    National Weather Service narrative

    HWY 24 undercut and one lane washed out. Flooding in Grand Wash. Bus with 29 passengers washed off road...no injuries reported. A mobile home was washed into a flooded creek. 2.78 of rain reported at Capitol Reef NP. Damage estimate collected from media reports. Official estimate not available.

  4. Sep 1, 2021Flash Flood$3.0 million
    National Weather Service narrative

    A significant flash flood occurred in the town of Hanksville, with nearly every structure in town impacted by flooding. Floodwaters were reportedly as deep as 6 feet in places. Rainfall totals were 1.2 inches in Hanksville, and were as high as 1.7 inches in the Henry Mountains. In Capitol Reef National Park, 1.66 inches fell.

  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 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…

  7. Sep 10, 2013Flood$300,000
    National Weather Service narrative

    Significant long duration rainfall caused widespread flooding across Wayne County. State Route 24 was closed in several locations over the two day period, including between Caineville and Hanksville, as well as near Capitol Reef National Park, where the road was eroded due to the overflowing Fremont River. In addition, State Route 95 was damaged by flood waters and closed near Hanksville. Damage also occurred at Fish Creek Cove, where the road was cut off; this left about a dozen homes inaccessible, some of which were primary residences.||In Capitol Reef National Park, all of the streams and slot canyons were running high; the Scenic Drive was closed for an extended period of…

  8. Jul 1, 2012Wildfire, Southern Mountains$150,000
    National Weather Service narrative

    The Shingle Fire began on July 1st, five miles east of Duck Creek, Utah and 4 miles south of State Route 14. The fire was caused by sparks from an ATV. In total, the Shingle Fire burned 8,061 acres before it was 100% contained on July 11th. Four firefighters were injured while fighting the blaze. The fire caused the evacuation of approximately 500 structures, and ultimately destroyed one residence and one non-residential building. In addition to these property damages, fire suppression costs totaled $7.1 million.

  9. Jun 23, 2022Flash Flood$110,000
    National Weather Service narrative

    Capitol Reef National Park reported SR-24 was impassable near milepost 83 due to flood waters from grand wash. Scenic drive was also closed, and the parking lot at the Grand Wash trailhead flooded. The flooding stranded nearly 60 people, and trapped or washed away several vehicles. Numerous water rescues were conducted by Utah Department of Public Safety helicopter operations to bring people to safety.

  10. Aug 23, 2003Flash Flood$100,000
    National Weather Service narrative

    Severe flash flooding occurred at Capitol Reef National Park, with water up to Silver Creek bridge. Highway 24 was reported under water with boulders rolling across the highway. Park visitors were being evacuated, and the Fremont river was 5 feet over flood stage.

  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.

Weather records

From Boulder, 31.7 miles from the county’s population centre, with records from 1954.

All-time high
97°FJun 16, 2021
All-time low
−17°FFeb 6, 1989
Warmest night
78°FJul 9, 2021
Coldest day
7°FJan 12, 1963
Wettest day
2.88 inOct 6, 2006
Snowiest day
20.0 inJan 22, 2010
Hottest year
2025mean 53.0°F
Coldest year
1975mean 46.7°F
Wettest year
195719.98 in
Driest year
20205.54 in
Snowiest season
157.0 in2009-10
Average monthly high and low temperature and precipitation, last 30 years, Boulder 32°F 41° 21° 0.9 Jan 45° 24° 0.9 Feb 54° 30° 0.9 Mar 61° 35° 0.5 Apr 70° 44° 0.6 May 80° 54° 0.5 Jun 85° 61° 1.2 Jul 82° 59° 1.6 Aug 75° 52° 1.7 Sep 63° 40° 1.5 Oct 51° 29° 0.6 Nov 41° 21° 0.7 Dec Precipitation, inches
Average daily high and low by month, and average monthly precipitation, over the last 30 years.
Nights at or below freezing per year 1976: 161 1977: 154 1978: 154 1979: 174 1980: 167 1981: 152 1982: 176 1984: 183 183 1985: 148 1986: 147 1987: 151 1988: 158 1989: 141 1990: 142 1991: 169 1992: 138 1993: 158 1994: 146 1995: 130 1996: 156 1997: 152 1998: 154 1999: 153 2000: 168 2001: 156 2002: 164 2003: 159 2004: 125 2005: 141 2006: 146 2007: 124 2008: 156 2009: 153 2010: 157 2011: 160 2012: 134 2013: 148 2014: 135 2015: 126 2016: 118 2017: 115 2018: 140 2019: 144 2020: 133 2021: 136 2022: 147 2023: 150 2024: 132 2025: 116 19761987199720072017
Nights at or below freezing each complete year, last 50 years. Thirty-year average: 143.3.
Snowfall by winter 1976: 0.0 in 1982: 51.7 in 1986: 31.5 in 1987: 23.0 in 1988: 53.0 in 1989: 12.5 in 1990: 25.0 in 1991: 67.0 in 1992: 98.0 in 1993: 16.6 in 1994: 59.0 in 1995: 9.5 in 1996: 59.8 in 1997: 50.0 in 1998: 33.0 in 1999: 18.5 in 2000: 68.5 in 2001: 19.0 in 2002: 23.5 in 2003: 43.0 in 2004: 109.0 in 2005: 33.0 in 2006: 31.0 in 2007: 53.0 in 2008: 51.0 in 2009: 157.0 in 157.0 2010: 48.0 in 2011: 54.0 in 2012: 47.0 in 2013: 45.0 in 2014: 58.0 in 2015: 58.0 in 2016: 70.0 in 2017: 16.0 in 2018: 72.0 in 2019: 48.0 in 2020: 47.0 in 2021: 27.0 in 2022: 91.9 in 2023: 30.1 in 2024: 15.7 in 2025: 13.0 in 19761994200420142024
Total snowfall each winter (July to June), last 50 winters.

Median first snow

November 30

Earliest: October 12, 2021

Median last snow

March 28

Latest: June 4, 1999

2 of 53 winters had no measurable snow.

Station Boulder (USC00420849), 6,650 ft elevation, 31.7 miles from the population centre. Daily records from 1954 to October 5, 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.

Federal disaster declarations

4 since 1953. The most recent: Covid-19 Pandemic, April 4, 2020.

Federal disaster declarations
Apr 4, 2020BiologicalCovid-19 PandemicMajor disasterDR-4525-UT
Mar 13, 2020BiologicalCovid-19EmergencyEM-3478-UT
Sep 5, 2005Coastal StormHurricane Katrina EvacuationEmergencyEM-3223-UT
Jan 20, 1977DroughtDroughtEmergencyEM-3024-UT

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.

How this compares

Where Wayne County stands among 29 counties in Utah and 3,143 in the United States.

Ranks
Tornadoes since 195086 / 292,381 / 3,143
Tornadoes rated F3/EF3 or stronger0——
Tropical cyclones within 50 mi0——
Hurricane-strength passes within 50 mi0——
Wildfire acres since 19842,06229 / 291,167 / 3,143
Flood insurance claims224 / 292,727 / 3,143
Flood insurance paid$0——
Disaster declarations428 / 293,110 / 3,143
Flood events since 19961723 / 29215 / 3,143
Hail and wind events since 19961528 / 293,088 / 3,143
Winter storm events since 199611625 / 29760 / 3,143
Reported damage since 1996$63.2 million9 / 29706 / 3,143
River crests at major flood stage0——
High tide flooding days a year, last 10 years0.0——
Months in severe drought since 189516920 / 29565 / 3,143
Medium or heavy smoke days a year, last 10 years11.621 / 292,223 / 3,143
Earthquakes M4+ within 50 mi since 19002221 / 29261 / 3,143
Earthquakes M2.5+ in the county since 19731722 / 29284 / 3,143

Neighbouring counties

Neighbouring counties
Emery County7051,8356
Garfield County40165,5172
Grand County50170,2218
Piute County1029,2041
San Juan County7044,9140
Sevier County2033,82715

Sources and vintage

Every number on this page comes from these public records.

  • 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 USC00420849.
  • 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.