QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

6km ESE of Wofford Heights, CA

· 4.3 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kern County 49 kmTulare County 69 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
1 report · strongest reported intensity II
Nearest
Kern County, 49 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3233 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 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 35.6942, -118.3882. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kern County, CA 49 km (31 mi) NE of here earthquakes near Kern County
Tulare County, CA 69 km (43 mi) SSE of here earthquakes near Tulare County
Inyo County, CA 131 km (81 mi) SW of here earthquakes near Inyo County
Fresno County, CA 164 km (102 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

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

  1. 1.6 23km NW of Tehachapi, CA
  2. 1.8 28km NNE of Kernville, CA
  3. 1.8 28km NNE of Kernville, CA
  4. 1.8 17km W of Inyokern, CA
  5. 1.9 21km SSW of Bodfish, CA
  6. 1.5 22km WNW of Inyokern, CA
  7. 2.1 22km NE of Arvin, CA
  8. 1.6 5km W of Kernville, CA
  9. 1.7 5km WNW of Kernville, CA
  10. 1.6 24km SSW of Bodfish, CA
  11. 1.6 25km NNE of Kernville, CA
  12. 1.8 25km NNE of Kernville, CA
  13. 1.5 25km WNW of Inyokern, CA
  14. 1.5 34km W of Coso Junction, CA
  15. 2.7 32km ESE of Porterville, 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.

On USGS

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