QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

23km ENE of San Lucas, CA

· 8.4 km deep · released about 570 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Monterey County 46 kmSan Benito County 49 kmKings County 90 kmSan Luis Obispo County 99 kmMerced County 107 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 2.9 (md)
Depth
8.4 km below the surface
Felt
2 reports · strongest reported intensity III
Nearest
Monterey County, 46 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2960 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 570 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 27,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 19,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.7× the energy of this one
  4. This earthquake M 2.9 about 570 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 36.2328, -120.8008. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Monterey County, CA 46 km (29 mi) E of here earthquakes near Monterey County
San Benito County, CA 49 km (31 mi) SSE of here earthquakes near San Benito County
Kings County, CA 90 km (56 mi) WNW of here earthquakes near Kings County
San Luis Obispo County, CA 99 km (62 mi) NNW of here earthquakes near San Luis Obispo County
Merced County, CA 107 km (67 mi) S of here earthquakes near Merced 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

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

  1. 1.5 1km NE of Pinnacles, CA
  2. 1.9 1km NE of Pinnacles, CA
  3. 1.5 11km NE of Pinnacles, CA
  4. 1.9 23km NW of Parkfield, CA
  5. 2.2 2km ENE of Pinnacles, CA
  6. 2.2 9km NE of Pinnacles, CA
  7. 2.3 4km N of Pinnacles, CA
  8. 2.0 4km N of Pinnacles, CA
  9. 2.0 4km N of Pinnacles, CA
  10. 1.8 7km ENE of Pinnacles, CA
  11. 1.7 9km SE of Pinnacles, CA
  12. 2.5 2km N of Pinnacles, CA
  13. 1.7 8km WSW of San Ardo, CA
  14. 1.5 8km NNE of Pinnacles, CA
  15. 1.9 21km N of New Idria, 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.