QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

10km SW of Tranquillity, CA

· 20 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fresno County 64 kmSan Benito County 66 kmKings County 75 kmMerced County 75 kmMadera County 86 kmMonterey County 96 kmMariposa County 115 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 2.4 (md)
Depth
20 km below the surface
Felt
no reports yet
Nearest
Fresno County, 64 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2020 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 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 92,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.2× the energy of this one
  4. This earthquake M 2.4 about 120 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 36.5945, -120.3423. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fresno County, CA 64 km (40 mi) WSW of here earthquakes near Fresno County
San Benito County, CA 66 km (41 mi) E of here earthquakes near San Benito County
Kings County, CA 75 km (46 mi) NW of here earthquakes near Kings County
Merced County, CA 75 km (47 mi) SSE of here earthquakes near Merced County
Madera County, CA 86 km (54 mi) SW of here earthquakes near Madera County
Monterey County, CA 96 km (59 mi) ENE of here earthquakes near Monterey County

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

Aftershocks so far

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

  1. 1.5 13km NE of Coalinga, CA
  2. 1.9 9km NNE of New Idria, CA
  3. 2.0 17km NW of New Idria, CA
  4. 1.8 16km N of New Idria, CA
  5. 3.8 15km SSE of New Idria, CA
  6. 2.1 11km SSW of Fairmead, CA
  7. 1.9 25km SSW of South Dos Palos, CA
  8. 1.6 19km NNW of Coalinga, CA
  9. 1.8 17km N of New Idria, CA
  10. 3.0 16km ENE of New Idria, CA
  11. 2.1 12km W of Cantua Creek, CA
  12. 1.9 12km SSW of Cantua Creek, CA
  13. 1.7 8km WNW of Huron, CA
  14. 1.5 13km WNW of Huron, CA
  15. 1.7 30km NE of Pinnacles, 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.