Franklin County

Every recorded tornado

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

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 ID GS (28), NASA (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 5, 2017Flood$1.7 million
   National Weather Service narrative

   A major warmup beginning early in the month created extensive snow melt from record winter snows and massive sheet flooding. Many homes received extensive damage but the main problem in the county was extensive road damage. Many roads and bridges washed out and had to be closed. Many culverts also washed out and 28 were determined to be in need of major repair. Flooding to wells and septic systems in personal homes caused contamination of water in many cases. The state of Idaho declared Franklin County a disaster area.

2. Mar 1, 2017Flood$77,000
   National Weather Service narrative

   Sheet flooding from snow melt continued in March but the effects decreased substantially from February. Road damage persisted along with some minor property damage.

3. Aug 9, 2017Flash Flood$25,000
   National Weather Service narrative

   Heavy rains caused flash flooding in Fairview in Franklin County. Several residents of Fairview reported flooding in their homes with 128 homes also without power for 3 to 4 hours. Power was restored at 7:30 pm MDT.

4. Feb 4, 2021Winter Storm, Franklin-Eastern Oneida Region$15,000
   National Weather Service narrative

   The COOP observer in Malad City reported 5.5 inches of snow with 6.5 inches reported by the COOP observer in Preston. The combination of snow and 30 to 40 mph winds caused multiple accidents and slide offs on interstate 15 near milepost 24 and Malad Summit.

5. Mar 1, 2023Heavy Snow, Franklin-Eastern Oneida Region$15,000
   National Weather Service narrative

   A detached garage collapsed due to a winter of heavy snow fall and resulting snow loading on the 1st on North Fairway Drive.

6. Mar 1, 2023Winter Weather, Franklin-Eastern Oneida Region$15,000
   National Weather Service narrative

   A detached garage collapsed due to multiple rounds of heavy snow fall, resulting in snow loading on the 1st on North Fairway Drive.

7. Jan 3, 2022Winter Storm, Franklin-Eastern Oneida Region$15,000
   National Weather Service narrative

   Heavy snow combined with wind gusts of over 40 mph to create hazardous travel throughout the region. The COOP observer at Malad City recorded 9 inches of snow. Several crashes occurred near Malad Summit on interstate 15 with crashes and slideoffs near mile marker 24 during the morning of the 5th. Oneida School District 351 closed due to the hazardous road conditions on the 5th.

8. Mar 28, 2021High Wind, Franklin-Eastern Oneida Region$15,000
   National Weather Service narrative

   Several high profile vehicles were blown over on interstate 15 near Malad Summit including a semi tractor trailer. Interstate 15 north bound was closed near mile marker 28.

9. Mar 25, 2006Thunderstorm Wind$10,000
   National Weather Service narrative

   Three highway signs knocked down along with several power lines. Scattered power outages created.

10. Jun 1, 2015Thunderstorm Wind$10,000
    National Weather Service narrative

    Between 4:30 and 6:30 on 6/1/2015 the Franklin County Sheriff's Office received several reports of power lines down with either broken power poles or trees fallen on lines, or power poles and lines fallen on houses. Rocky Mountain Power and Utah Power are still working on restoring power, however, many residents are still without power. Much of the damage was isolated to the West Side of Franklin County. We had one report of a man electrocuted by a downed line, however, he was treated on scene by EMS and released. We had many trees blocking roads which have now been removed, and other reports of property damage due to wind including one cargo trailer which was blown over. We…

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

110°FJul 23, 2000

All-time low

−31°F2 times, most recently Dec 23, 1990

Warmest night

70°F2 times, most recently Jul 21, 2026

Coldest day

−10°FDec 24, 1990

Wettest day

2.24 inOct 8, 2021

Snowiest day

16.5 inJan 4, 2017

Hottest year

2025mean 49.9°F

Coldest year

1985mean 42.4°F

Wettest year

198325.54 in

Driest year

19669.01 in

Snowiest season

107.7 in2022-23

Station Preston (USC00107346), 4,719 ft elevation, 0.6 miles from the population centre. Daily records from 1964 to October 8, 2026; 92.6% 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 USC00107346.
• 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.