QuakeIndex

Fault · California

Ash Hill fault

53 kmlong (33 mi), as mapped
not measuredhow fast it slips
< 15,000 yearssince it last broke the surface
86quakes of M2.5+ within 10 km since 2016

In plain English

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

The largest earthquake recorded near it was M 6.0 in 1908 (Death Valley area, California) — about 32,000 times the energy of an M3.0, the size people start to feel. It released about 15 kilotons of TNT.

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

San Andreas faultGarlock faultSouthern Sierra Nevada faultOwens Valley faultPanamint Valley faultNorthern Death Valley faultBlack Mountains faultBlackwater faultRock Valley faultHunter Mountain- Saline Valley faultSouthern Death Valley faultLittle Lake faultTowne Pass faultAirport Lake faultOwl Lake faultYucca Mountain faults, western groupTank Canyon fault M 6.0 · 1908 · Death Valley area, California
The Ash Hill fault as mapped at the surface (glowing), with the other mapped faults nearby, 86 of the M2.5+ earthquakes within 10 km of it since 2016 (dots), and the epicentres of the large historic earthquakes recorded near it (rings). 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.

The big ones recorded near it

  1. M 6.0 Death Valley area, California
    November 4, 1908 · epicentre 22 km from the trace
  2. M 4.3 21km N of Searles Valley, CA
    March 23, 2020 · epicentre 9 km from the trace

Before 1973 from the USGS ComCat historical catalogue (within 25 km; epicentres of old earthquakes are estimates). Since 2016, M4+ within 10 km.

Most recent near it

  1. M 2.7 22 km N of Searles Valley, CA
    2024-09-03 · 9 km from the trace
  2. M 2.9 22 km N of Searles Valley, CA
    2024-05-21 · 10 km from the trace
  3. M 2.9 27km N of Searles Valley, CA
    2023-02-18 · 5 km from the trace
  4. M 2.9 24km NNE of Trona, CA
    2022-10-31 · 5 km from the trace
  5. M 2.7 31km N of Searles Valley, CA
    2022-09-14 · 5 km from the trace
  6. M 3.2 24km N of Searles Valley, CA
    2022-06-15 · 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.