QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

28km NNE of Kernville, CA

· 4.3 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tulare County 46 kmKern County 81 kmInyo County 105 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
4.3 km below the surface
Felt
no reports yet
Nearest
Tulare County, 46 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2631 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 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 36.0035, -118.3532. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tulare County, CA 46 km (29 mi) ESE of here earthquakes near Tulare County
Kern County, CA 81 km (50 mi) NNE of here earthquakes near Kern County
Inyo County, CA 105 km (65 mi) SW of here earthquakes near Inyo County
Fresno County, CA 144 km (89 mi) SE of here earthquakes near Fresno County

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

Aftershocks so far

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

  1. 1.8 14km NE of Coso Junction, CA
  2. 2.0 29km NNE of Kernville, CA
  3. 1.5 8km E of Coso Junction, CA
  4. 1.6 8km E of Coso Junction, CA
  5. 2.0 8km NE of Coso Junction, CA
  6. 2.2 9km E of Coso Junction, CA
  7. 1.9 14km SE of Olancha, CA
  8. 1.6 9km ENE of Coso Junction, CA
  9. 1.5 7km E of Coso Junction, CA
  10. 1.6 9km E of Coso Junction, CA
  11. 2.7 8km E of Coso Junction, CA
  12. 4.2 9km E of Coso Junction, CA
  13. 1.7 10km ENE of Coso Junction, CA
  14. 1.9 10km 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 4.5 on 2019-07-11 — it released about 13,000 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.