QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

4 km S of Avenal, California

· 25 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kings County 31 kmSan Luis Obispo County 70 kmFresno County 99 kmMonterey County 110 kmSan Benito County 112 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 (md)
Depth
25 km below the surface
Felt
no reports yet
Nearest
Kings County, 31 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3293 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 17 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 5.8 870,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 620,000× the energy of this one
  3. Around the size people start to feel M 3.0 55× the energy of this one
  4. This earthquake M 1.8 about 17 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 35.9627, -120.1360. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kings County, CA 31 km (19 mi) WSW of here earthquakes near Kings County
San Luis Obispo County, CA 70 km (43 mi) NNE of here earthquakes near San Luis Obispo County
Fresno County, CA 99 km (61 mi) SSW of here earthquakes near Fresno County
Monterey County, CA 110 km (69 mi) ESE of here earthquakes near Monterey County
San Benito County, CA 112 km (69 mi) SE of here earthquakes near San Benito 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. 2.2 12km SW of Lanare, CA
  2. 1.9 27km S of Kettleman City, CA
  3. 1.7 20km NW of Parkfield, CA
  4. 1.5 3km NE of Cholame, CA
  5. 2.6 18km WSW of Corcoran, CA
  6. 1.5 12km NNW of Coalinga, CA
  7. 2.1 12km NNW of Coalinga, CA
  8. 1.7 12km NNW of Coalinga, CA
  9. 2.1 14km N of Coalinga, CA
  10. 2.6 13km N of Coalinga, CA
  11. 3.0 20km ESE of Kettleman City, CA
  12. 2.4 2 km NW of Parkfield, California
  13. 2.7 2 km WNW of Parkfield, California
  14. 2.8 20 km SW of Corcoran, California
  15. 2.5 25 km S of Kettleman City, California

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.