QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

20km N of New Idria, CA

· 11 km deep · released about 72 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Benito County 33 kmMonterey County 67 kmMerced County 67 kmFresno County 96 kmKings County 99 kmMadera County 110 kmStanislaus County 111 kmSanta Clara County 111 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 2.3 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
San Benito County, 33 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2097 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 72 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 210,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 72 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 36.5927, -120.7140. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 33 km (21 mi) E of here earthquakes near San Benito County
Monterey County, CA 67 km (41 mi) NE of here earthquakes near Monterey County
Merced County, CA 67 km (42 mi) S of here earthquakes near Merced County
Fresno County, CA 96 km (60 mi) W of here earthquakes near Fresno County
Kings County, CA 99 km (62 mi) NW of here earthquakes near Kings County
Madera County, CA 110 km (68 mi) SW of here earthquakes near Madera County

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

Aftershocks so far

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

  1. 1.6 11km NNE of Pinnacles, CA
  2. 1.9 10km NNE of New Idria, CA
  3. 2.0 12km SE of Pinnacles, CA
  4. 2.1 2km NNE of Pinnacles, CA
  5. 2.5 12km NW of Pinnacles, CA
  6. 2.1 16km NW of Pinnacles, CA
  7. 1.7 23km SE of Pinnacles, CA
  8. 1.8 16km NW of Pinnacles, CA
  9. 1.7 22km ENE of San Lucas, CA
  10. 1.6 10km NW of Pinnacles, CA
  11. 1.9 2km ENE of Pinnacles, CA
  12. 1.5 11km NW of Pinnacles, CA
  13. 2.8 13km NW of Pinnacles, CA
  14. 1.6 16km NW of Pinnacles, CA
  15. 1.6 23km ENE of San Lucas, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.6 on 2017-11-13 — it released about 3,100 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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