QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

5km SSW of Huron, CA

· 8.4 km deep · released about 51 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kings County 30 kmFresno County 79 kmSan Luis Obispo County 91 kmSan Benito County 99 kmMonterey County 106 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 2.1 (md)
Depth
8.4 km below the surface
Felt
no reports yet
Nearest
Kings County, 30 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2872 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 51 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 210,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 51 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 36.1632, -120.1328. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kings County, CA 30 km (19 mi) WNW of here earthquakes near Kings County
Fresno County, CA 79 km (49 mi) SSW of here earthquakes near Fresno County
San Luis Obispo County, CA 91 km (56 mi) NNE of here earthquakes near San Luis Obispo County
San Benito County, CA 99 km (61 mi) ESE of here earthquakes near San Benito County
Monterey County, CA 106 km (66 mi) E of here earthquakes near Monterey County
Madera County, CA 121 km (75 mi) SSW of here earthquakes near Madera County

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

Aftershocks so far

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

  1. 1.6 18km NW of Parkfield, CA
  2. 1.9 10km WSW of Huron, CA
  3. 1.6 5km NW of Parkfield, CA
  4. 1.8 23km SE of Kettleman City, CA
  5. 2.0 21km SSE of Kettleman City, CA
  6. 1.9 21km SSE of Kettleman City, CA
  7. 2.6 21km SSE of Kettleman City, CA
  8. 1.8 12km ENE of Coalinga, CA
  9. 2.9 12km ENE of Coalinga, CA
  10. 1.9 21km SSE of Kettleman City, CA
  11. 1.7 23km NW of Parkfield, CA
  12. 2.4 25km E of San Ardo, CA
  13. 2.3 14km SW of Cantua Creek, CA
  14. 2.4 10km ENE of Coalinga, CA
  15. 1.7 19km NW of Parkfield, 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.