Cache County

Every recorded tornado

1. Injuries and deaths are for the tornado’s whole path, which may extend beyond the county. Deaths recorded within Cache 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 (1,058), USGS Conterminous (16), NASA (3).

Deadly landslides

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$4.0 million
   National Weather Service narrative

   Significant rainfall and snowmelt caused main stem river flooding along the Bear River, and also overwhelmed drainage systems away from the river across much of Cache County. Many roads were flooded and structurally compromised, with over $2.5 million worth of damage reported to roads alone. Debris and flood waters also caused significant damage to sewage and water control systems. Dozens of homes experienced basement flooding, particularly in Wellsville, Hyrum, and Mendon.

2. May 13, 2011Flood$500,000
   National Weather Service narrative

   The Blacksmith Fork River experienced flooding again in mid-May, peaking at 1434 cfs on May 16th, well above the flood flow of 934 cfs. Flooding was reported in Logan, Millville, and Hyrum. The bridge in Millville at 2900 South was washed out on both ends, and other low-lying bridges and roadways were impacted. The worst of the damage was at the Country Manor subdivision, where nine homes were flooded and evacuated.

3. 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…

4. Oct 11, 2021Winter Storm, Cache Valley/Utah Portion$250,000
   National Weather Service narrative

   Storm total snow reports included 12 inches in Providence, 11 inches in Logan, and 8 inches in Hyrum. Heavy wet snow brought down numerous fully leafed trees and limbs, caused property damage, knocked out power to thousands of customers, and caused the delay and cancellation of multiple schools.

5. Jun 15, 2011Flood$200,000
   National Weather Service narrative

   The Logan River flooded again beginning in mid-June. The Logan River Golf Course and walking trail was partially closed when a breach in the river bank sent a large stream of water down the middle of the golf course. Damage occurred to a few low lying bridges, including the Millville Bridge and a railroad bridge in Logan.

6. Jun 23, 2011Flood$100,000
   National Weather Service narrative

   The Logan River continued to flood through the end of June. This flooding damaged summer homes in the Birch Glen area, and continued to significantly impact the Logan River Golf Course. Note that this event continued into July.

7. Jun 25, 2011Flood$100,000
   National Weather Service narrative

   Spring Creek near the town of Providence, Utah experienced flooding at the end of June. Most of the damage occurred when gravel clogged culverts along the creek, making the creek divert around the culverts, and causing damage to driveways and roads. At one point, flooding threatened houses, and a couple families were voluntarily evacuated. Throughout the event, a few houses along the creek experienced basement flooding. Note that this event continued into July.

8. Jan 19, 2012Flood$100,000
   National Weather Service narrative

   Heavy rainfall in the Cache Valley, combined with frozen ground and snowmelt, produced flooding in portions of Mendon and Wellsville. Culverts in those areas quickly became clogged with debris, and several homes reported basement flooding. State Route 23 was also closed for a period of time due to water flowing across the road.

9. Apr 28, 2001Thunderstorm Wind$100,000
   National Weather Service narrative

   Microburst wind gusts estimated at around 80mph (70kts) hit the Trenton and Smithfield areas during the evening hours. These winds ripped the metal roof off of an 88-foot hay barn and carried it for a block. Several trees were also blown over and power lines were blown down.

10. May 13, 2026Dust Storm, Cache Valley/Utah Portion$100,000
    National Weather Service narrative

    Strong winds associated with thunderstorms in the areas resulted in periods of blowing dust and reduced visibility. Utah Highway Patrol reported that this dust storm led to a multi-vehicle traffic accident on U.S. Highway 91 in northern Cache County, which resulted in multiple serious injuries. A patrol sergeant reported that injuries included one critical injury, and six serious but non life-threatening injuries. The largest crash(es) were reported near mile marker 44. The incident resulted in the closure of the highway for four hours.

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 21, 1960

All-time low

−30°FDec 23, 1990

Warmest night

74°FJul 5, 1988

Coldest day

−14°FDec 24, 1990

Wettest day

2.48 inAug 19, 1977

Snowiest day

16.0 inJan 28, 2002

Hottest year

2012mean 50.2°F

Coldest year

1985mean 42.6°F

Wettest year

198332.76 in

Driest year

19666.34 in

Snowiest season

90.2 in2022-23

Station Logan Radio Kvnu (USC00425182), 4,475 ft elevation, 1.1 miles from the population centre. Daily records from 1956 to October 20, 2026; 95.2% 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 USC00425182.
• 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.