QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

23km S of Trona, CA

· 2.4 km deep · released about 1,600 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Inyo County 112 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 3.1 (ml)
Depth
2.4 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Inyo County, 112 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1769 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,600 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 210,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 9,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,700× the energy of this one
  4. This earthquake M 3.1 about 1,600 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.7× more

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 35.5593, -117.3917. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Inyo County, CA 112 km (69 mi) S of here earthquakes near Inyo County
San Bernardino County, CA 135 km (84 mi) NW of here earthquakes near San Bernardino County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

54 earthquakes have been recorded within 50 km since this one.

  1. 1.8 16km S of Searles Valley, CA
  2. 1.6 11km WSW of Searles Valley, CA
  3. 1.5 15km WSW of Searles Valley, CA
  4. 1.5 19km S of Trona, CA
  5. 2.3 26km SSE of Trona, CA
  6. 1.9 11km ENE of Ridgecrest, CA
  7. 1.7 17km SSW of Searles Valley, CA
  8. 1.8 15km SW of Searles Valley, CA
  9. 2.3 19km NNE of Ridgecrest, CA
  10. 2.4 13km SW of Searles Valley, CA
  11. 2.3 20km ESE of Little Lake, CA
  12. 1.5 21km ESE of Little Lake, CA
  13. 1.7 13km WSW of Searles Valley, CA
  14. 2.0 17km ESE of Little Lake, CA
  15. 1.7 17km W of Searles Valley, CA

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 7.1 on 2019-07-06 — it released about 840,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.