QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

24km ENE of Arvin, CA

· 5.6 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kern County 12 kmTulare County 103 kmVentura County 117 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 1.8 (ml)
Depth
5.6 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Kern County, 12 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1744 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 35.3145, -118.6042. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kern County, CA 12 km (7 mi) ESE of here earthquakes near Kern County
Tulare County, CA 103 km (64 mi) S of here earthquakes near Tulare County
Ventura County, CA 117 km (73 mi) NNE of here earthquakes near Ventura County
Kings County, CA 138 km (86 mi) SE of here earthquakes near Kings County

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

Aftershocks so far

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

  1. 1.8 22km NNW of Tehachapi, CA
  2. 3.3 22km NNW of Tehachapi, CA
  3. 1.7 31km ESE of Lake Isabella, CA
  4. 1.6 21km NNW of Tehachapi, CA
  5. 1.5 12km NW of Grapevine, CA
  6. 1.5 11km SW of Arvin, CA
  7. 2.3 14km SSW of Arvin, CA
  8. 1.5 8km NNE of Grapevine, CA
  9. 2.1 22km NNW of Tehachapi, CA
  10. 1.8 12km SE of Bodfish, CA
  11. 1.7 27km SSW of Bodfish, CA
  12. 1.8 26km SSW of Bodfish, CA
  13. 2.0 12km SE of Bodfish, CA
  14. 1.7 13km SE of Bodfish, CA
  15. 2.4 5km W of Kernville, 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 4.0 on 2021-08-27 — it released about 2,200 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.