QuakeIndex

Fault · Idaho, Utah

East Cache fault

79 kmlong (49 mi), as mapped
0.2–1 mm/yrhow fast it slips
< 15,000 yearssince it last broke the surface
8quakes of M2.5+ within 10 km since 2016

In plain English

The two sides move 0.2 to 1 mm a year — 2 to 10 cm every century.

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

USGS maps it as 3 sections: central section, northern section, southern 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

Wasatch faultGreat Salt Lake faultEastern Bear Lake faultWest Cache faultWestern Bear Lake faultNorth Promontory faultCurlew Valley faultsMorgan fault
The East Cache fault as mapped at the surface (glowing), with the other mapped faults nearby, 8 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 2.9 6 km E of Avon, Utah
    2024-11-23 · 4 km from the trace
  2. M 3.2 1 km NE of Benson, Utah
    2023-01-03 · 10 km from the trace
  3. M 2.7 1 km NNE of Benson, Utah
    2023-01-03 · 10 km from the trace
  4. M 2.8 2 km N of Benson, Utah
    2023-01-03 · 10 km from the trace
  5. M 2.5 2 km NNE of Benson, Utah
    2023-01-02 · 9 km from the trace
  6. M 2.6 3 km SSE of Trenton, Utah
    2022-12-23 · 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.