Box Elder County

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Box Elder 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 (943), USGS Conterminous (7), NASA (3), NV NBMG (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. Feb 7, 2017Flood$5.0 million
   National Weather Service narrative

   Significant rainfall and snowmelt led to main stem river flooding along the Bear River, and also produced widespread flooding away from the river across Box Elder County, with one estimate from the County Commissioner saying that 90% of communities in the county had been affected. Approximately 60 to 100 homes experienced basement flooding, especially in Bothwell, Garland, and Tremonton. Flooding also impacted many businesses and churches. Damage to roadways was also widespread, with over $3.1 million in road damage alone.

2. Aug 3, 2023Flood$1.0 million
   National Weather Service narrative

   Flooding was reported in Corrine where 3.44 inches of rain was recorded. There was 5.83 inches of rain measured in Honeyville. Reports of basement flooding and photos of flooding to crops, farmland, and yards were observed.

3. Aug 3, 2023Flash Flood$1.0 million
   National Weather Service narrative

   Flooding was reported in Corrine. Reports of basement flooding and photos of flooding to crops, farmland, and yards were observed. A rainfall amount of 3.44 inches was recorded in Corrine.

4. Aug 3, 2023Flash Flood$1.0 million
   National Weather Service narrative

   Homes were flooded in Honeyville, where 5.66 inches of rain fell from August 1 to August 3.

5. Feb 16, 2026Winter Storm, Wasatch Mountains I-80 North$500,000
   National Weather Service narrative

   A powerful winter storm brought heavy snow and strong winds to the area. Reported snow observations include 27 inches of snow in the Logan Mountains (3.1 inches water), 23 inches of snow at Powder Mountain (2.5 inches water), and 18 inches of snow at Snowbasin - Base (1.9 inches of water). Additionally, several SNOTEL stations including Lightning Ridge, Ben Lomond Peak, and Monte Cristo recorded from 1.6 to 2.7 inches of snow water equivalent, resulting in approximately 21 to 37 inches of snow. Some peak wind gust observations through the event include 97 mph at Snowbasin - Straw Top, 78 mph at Snowbasin - Strawberry Tower 15, and 76 mph at Ogden Peak. Inclement conditions also…

6. Aug 10, 2013Wildfire, Great Salt Lake Desert And Mountains$350,000
   National Weather Service narrative

   The Patch Springs Fire began due to a lightning strike on August 10, two miles from the community of Terra, Utah, which eventually received some damage as the fire spread. Property damage from this fire first occurred on August 17, and the fire eventually grew to 31,010 acres before being contained on August 24. ||The fire destroyed 5 trailer homes and significantly damaged 1 additional trailer home. In addition, 8 outbuildings and 1 commercial property were destroyed by the flames. Along Highway 199, 26 power poles were damaged or destroyed by the fire.

7. Apr 27, 2010High Wind, Great Salt Lake Desert And Mountains$250,000
   National Weather Service narrative

   The strongest recorded wind gusts in the Great Salt Lake Desert and Mountains included 83 mph at Hat Island, 72 mph at Rosebud, 70 mph at I-80 at White's Valley, 69 mph at the North Salt Flats sensor, 64 mph at Promontory Point, and 62 mph at the Wendover POE sensor. The major damage in the area occurred near the National Weather Service radar at Promontory Point, where 21 power poles that supply power to the radar were snapped.

8. Apr 14, 2015High Wind, Great Salt Lake Desert And Mountains$150,000
   National Weather Service narrative

   The winds were strongest across Utah's northwest desert, with maximum wind gusts of 82 mph at both Lakeside Mountain and English Village, 81 mph at the Interstate 80 at Milepost 1 sensor, 75 mph at Badger Island, 74 mph at Upper Cedar Mountain, 72 mph at the Wendover Point of Entry, and many observations in the 55-70 mph range. The largest impact was along Interstate 80 near Delle, where low visibility in blowing dust was a major factor in a large pilup crash. A semitruck slowed down when experiencing reduced visibilities, but this caused several passenger vehicles to collide with the back of the truck. After the chain reaction was finished, a total of 6 semitrucks and 11…

9. Jan 5, 2026Winter Weather, Eastern Box Elder County$100,000
   National Weather Service narrative

   Law enforcement (including dispatch, fire department, and other associated first responders) responded to a report of a collision between a semi truck and passenger vehicle on I-15 southbound near mile marker 384 shortly before 1:30 pm. Thereafter numerous other rollover and collision accidents were reported between mile marker 383 to 387. A total of two individuals were transported for medical attention with minor injuries. Winter weather is assumed to be the cause.

10. Jan 10, 2024Winter Weather, Eastern Box Elder County$53,000
    National Weather Service narrative

    Snow Squall. Multiple mesonet stations recorded a period of moderate wind gusts (generally 20 to 30 mph), and significant reductions to visibility (at times 1/4 of a mile or less) as a band of heavy snow moved through the area. Some selected mesonet sensors with supporting observations include the I-15 @ Tremonton mesonet site (peak wind gust of 27 mph, visibility to 1/4 of a mile, snowfall rates of 2 inches per hour), the I-15 at MP 369 North Brigham City mesonet site (peak wind gust of 23 mph, visibility to 1/4 of a mile), and the I-15 @ Willard POE mesonet site (peak wind gust of 31 mph, visibility to less than a quarter of a mile). Many of these mesonet sites also reported…

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

104°FJul 13, 2002

All-time low

−25°FDec 23, 1990

Warmest night

78°F2 times, most recently Jul 22, 2024

Coldest day

7°FJan 14, 2013

Wettest day

2.93 inSep 26, 1982

Snowiest day

18.0 inDec 16, 1984

Hottest year

2025mean 53.7°F

Coldest year

1985mean 45.9°F

Wettest year

198333.93 in

Driest year

20207.06 in

Snowiest season

71.6 in1984-85

Station Brigham City Waste Plt (USC00420928), 4,240 ft elevation, 5.5 miles from the population centre. Daily records from 1974 to October 13, 2026; 94.8% 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 USC00420928.
• 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.