QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

18km SW of New Idria, CA

· 10 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Benito County 43 kmMonterey County 46 kmKings County 92 kmMerced County 100 kmSan Luis Obispo County 106 kmFresno 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 2.1 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
San Benito County, 43 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3036 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 43 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 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 36.2995, -120.8055. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 43 km (27 mi) SE of here earthquakes near San Benito County
Monterey County, CA 46 km (29 mi) E of here earthquakes near Monterey County
Kings County, CA 92 km (57 mi) WNW of here earthquakes near Kings County
Merced County, CA 100 km (62 mi) S of here earthquakes near Merced County
San Luis Obispo County, CA 106 km (66 mi) NNW of here earthquakes near San Luis Obispo County
Fresno County, CA 115 km (71 mi) WSW of here earthquakes near Fresno County

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

Aftershocks so far

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

  1. 1.9 3km SSE of San Ardo, CA
  2. 2.1 11km NE of Pinnacles, CA
  3. 2.0 8km ENE of Pinnacles, CA
  4. 1.5 23km WSW of New Idria, CA
  5. 1.9 12km NW of Parkfield, CA
  6. 1.9 2km NNE of Pinnacles, CA
  7. 1.6 13km N of Coalinga, CA
  8. 1.9 3km SSE of San Ardo, CA
  9. 2.3 7km ENE of Pinnacles, CA
  10. 1.7 3km SSE of San Ardo, CA
  11. 2.1 4km NNW of Pinnacles, CA
  12. 1.8 17km SE of Pinnacles, CA
  13. 1.9 23km ENE of San Ardo, CA
  14. 1.7 24km NE of King City, CA
  15. 2.4 9km ENE 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.