QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

25 km NE of Johannesburg, CA

· 9.4 km deep · released about 79 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Inyo County 116 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 2.3 (ml)
Depth
9.4 km below the surface
Felt
no reports yet
Nearest
Inyo County, 116 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 59 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 79 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 190,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 79 lb of TNT

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 35.5150, -117.4165. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Inyo County, CA 116 km (72 mi) S of here earthquakes near Inyo County
Kern County, CA 120 km (75 mi) E of here earthquakes near Kern County
San Bernardino County, CA 134 km (83 mi) WNW 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

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

  1. 1.6 14km SW of Searles Valley, CA
  2. 1.5 17km NNE of Ridgecrest, CA
  3. 2.0 15km SSW of Searles Valley, CA
  4. 1.7 19 km NNE of Ridgecrest, CA
  5. 3.7 14km NE of Ridgecrest, CA
  6. 2.1 13 km ENE of Ridgecrest, CA
  7. 2.7 19km S of Trona, CA
  8. 2.1 14 km ENE of Ridgecrest, CA
  9. 1.5 15km WSW of Searles Valley, CA
  10. 1.6 15 km ENE of Ridgecrest, CA
  11. 1.6 14 km ENE of Ridgecrest, CA
  12. 2.2 22 km S of Trona, CA
  13. 2.6 21km N of Ridgecrest, CA
  14. 1.8 15km NE of Ridgecrest, CA
  15. 1.6 20km ESE of Little Lake, 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 17,000,000 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.