QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

14km SW of Olancha, CA

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

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tulare County 59 kmInyo County 76 kmKern County 110 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
2.0 km below the surface
Felt
5 reports · strongest reported intensity III
Nearest
Tulare County, 59 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 713 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 5 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 36.2083, -118.1278. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tulare County, CA 59 km (36 mi) E of here earthquakes near Tulare County
Inyo County, CA 76 km (47 mi) WSW of here earthquakes near Inyo County
Kern County, CA 110 km (68 mi) NNE of here earthquakes near Kern County

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

Aftershocks so far

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

  1. 1.8 18km SW of Olancha, CA
  2. 1.8 18km SW of Olancha, CA
  3. 1.6 18km SW of Olancha, CA
  4. 2.3 18km SW of Olancha, CA
  5. 2.2 18km SW of Olancha, CA
  6. 2.0 18km SW of Olancha, CA
  7. 1.7 18km SW of Olancha, CA
  8. 1.9 9km ENE of Coso Junction, CA
  9. 1.5 9km NE of Coso Junction, CA
  10. 1.6 6km E of Coso Junction, CA
  11. 1.6 10km NE of Coso Junction, CA
  12. 1.9 17 km E of Little Lake, CA
  13. 1.9 12 km NNE of Coso Junction, CA
  14. 1.8 10 km ENE of Coso Junction, CA
  15. 1.8 13km NE of Coso Junction, 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 5.5 on 2019-07-06 — it released about 3,300 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.