QuakeIndex

Fault · Idaho, Utah

Wasatch fault

357 kmlong (222 mi), as mapped
1–5 mm/yrhow fast it slips
< 15,000 yearssince it last broke the surface
7quakes of M2.5+ within 10 km since 2016

In plain English

The two sides move 1 to 5 mm a year — 10 to 50 cm (4 to 20 inches) every century.

Its most recent surface rupture is younger than 15,000 years.

USGS maps it as 10 sections: Brigham City section, Clarkston Mountain section, Collinston section, Fayette section, Levan section, Malad City section, Nephi section, Provo section….

This week vs. its last ten years

0/100

quiet

0 quakes of M1.5+ within 5 km of the trace in the last 7 days — busier than 0% of weeks since 2016. A normal week: 0–0.

Computed from the USGS catalogue · a description of the past, not a forecast · method

Grand Valley faultGreat Salt Lake faultEast Cache faultEastern Bear Lake faultWest Cache faultWestern Bear Lake faultSkull Valley (mid-valley) faultsDrum Mountains faultStansbury faultGunnison faultBeaver Basin faultsStrawberry faultUtah Lake faultsPavant faultsNorth Promontory faultSnow Lake grabenHeise faultMain Canyon faultSouthern Oquirrh Mountains faultOquirrh faultCurlew Valley faultsLittle Valley faultsMaple Grove faultsMorgan faultCrater Bench faultsParowan Valley faultsWest Valley faultPavant Range faultAnnabella graben faultsHansel Valley faultScipio fault
The Wasatch fault as mapped at the surface (glowing), with the other mapped faults nearby, 7 of the M2.5+ earthquakes within 10 km of it since 2016 (dots), . Traces: USGS Quaternary Fault and Fold Database. Historic epicentres are estimates.

Every year since 2016

Earthquakes of M2.5+ with an epicentre within 10 km of the mapped trace. Near is not the same as on: some will have slipped on neighbouring faults.

Most recent near it

  1. M 2.6 2 km ESE of Malad City, Idaho
    2026-06-15 · 0 km from the trace
  2. M 3.2 16 km SSW of Levan, Utah
    2021-10-22 · 4 km from the trace
  3. M 3.0 6 km W of Salt Lake City, Utah
    2020-03-26 · 6 km from the trace
  4. M 3.3 6 km W of Salt Lake City, Utah
    2020-03-26 · 6 km from the trace
  5. M 2.5 2 km S of Bluffdale, Utah
    2019-03-05 · 10 km from the trace
  6. M 2.5 2 km S of Bluffdale, Utah
    2019-02-21 · 10 km from the trace

Neighbouring faults

Fault trace, slip rate and age: USGS Quaternary Fault and Fold Database (public domain), simplified for the web. Earthquakes: USGS ComCat. QuakeIndex does not forecast earthquakes; a fault's history describes the past. For early warning use ShakeAlert.