QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

21km SW of New Idria, CA

· 9.3 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Benito County 43 kmMonterey County 43 kmKings County 94 kmMerced County 102 kmSan Luis Obispo County 105 kmFresno County 118 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 1.5 (md)
Depth
9.3 km below the surface
Felt
no reports yet
Nearest
San Benito County, 43 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2972 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 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 36.2825, -120.8350. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 43 km (27 mi) SSE of here earthquakes near San Benito County
Monterey County, CA 43 km (27 mi) E of here earthquakes near Monterey County
Kings County, CA 94 km (59 mi) WNW of here earthquakes near Kings County
Merced County, CA 102 km (63 mi) S of here earthquakes near Merced County
San Luis Obispo County, CA 105 km (65 mi) NNW of here earthquakes near San Luis Obispo County
Fresno County, CA 118 km (73 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. 2.0 4km N of Pinnacles, CA
  2. 2.0 4km N of Pinnacles, CA
  3. 1.5 7km NW of Pinnacles, CA
  4. 1.6 13km NNE of Pinnacles, CA
  5. 1.8 7km ENE of Pinnacles, CA
  6. 1.7 9km SE of Pinnacles, CA
  7. 2.5 2km N of Pinnacles, CA
  8. 1.7 8km WSW of San Ardo, CA
  9. 1.9 9km NNE of Pinnacles, CA
  10. 1.5 8km NNE of Pinnacles, CA
  11. 1.9 21km N of New Idria, CA
  12. 2.0 8km ENE of Pinnacles, CA
  13. 1.7 10km NW of Pinnacles, CA
  14. 2.7 10km NW of Pinnacles, CA
  15. 1.6 8km 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.