QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

4km NE of New Idria, CA

· 19 km deep · released about 1,400 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Benito County 44 kmMonterey County 65 kmMerced County 84 kmKings County 85 kmFresno County 95 kmMadera County 116 kmSan Luis Obispo County 119 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 3.1 (ml)
Depth
19 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
San Benito County, 44 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2424 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 1,400 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 230,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 10,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,400× the energy of this one
  4. This earthquake M 3.1 about 1,400 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.5× more

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 36.4457, -120.6420. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 44 km (27 mi) ESE of here earthquakes near San Benito County
Monterey County, CA 65 km (40 mi) ENE of here earthquakes near Monterey County
Merced County, CA 84 km (52 mi) S of here earthquakes near Merced County
Kings County, CA 85 km (53 mi) WNW of here earthquakes near Kings County
Fresno County, CA 95 km (59 mi) WSW of here earthquakes near Fresno County
Madera County, CA 116 km (72 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

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

  1. 2.0 18km NW of Parkfield, CA
  2. 2.5 4km ESE of Pinnacles, CA
  3. 1.9 6km ESE of Pinnacles, CA
  4. 1.5 7km ENE of Pinnacles, CA
  5. 2.4 13km SE of Pinnacles, CA
  6. 1.8 17km E of Pinnacles, CA
  7. 1.8 13km SE of Pinnacles, CA
  8. 2.0 21km NW of Parkfield, CA
  9. 2.5 7km E of Pinnacles, CA
  10. 1.8 17km NNE of Coalinga, CA
  11. 2.1 8km ESE of Pinnacles, CA
  12. 1.8 20km SE of Pinnacles, CA
  13. 1.8 7km ENE of Pinnacles, CA
  14. 2.2 17km NW of Parkfield, CA
  15. 2.0 12km SE 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.