QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4mw

4km ESE of New Idria, CA

· 11 km deep · released about 2.1 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Benito County 47 kmMonterey County 64 kmKings County 82 kmMerced County 88 kmFresno County 95 kmSan Luis Obispo County 114 kmMadera 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 3.4 (mw)
Depth
11 km below the surface
Felt
8 reports · strongest reported intensity II
Measured shaking
intensity IV (ShakeMap)
Nearest
San Benito County, 47 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2280 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 8 people have reported feeling it to USGS.

How big was it?

This earthquake released about 2.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 80,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 3,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,500× the energy of this one
  4. This earthquake M 3.4 about 2.1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4.4× 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 36.4055, -120.6282. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 47 km (29 mi) ESE of here earthquakes near San Benito County
Monterey County, CA 64 km (40 mi) ENE of here earthquakes near Monterey County
Kings County, CA 82 km (51 mi) WNW of here earthquakes near Kings County
Merced County, CA 88 km (55 mi) S of here earthquakes near Merced County
Fresno County, CA 95 km (59 mi) WSW of here earthquakes near Fresno County
San Luis Obispo County, CA 114 km (71 mi) N of here earthquakes near San Luis Obispo County

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

Aftershocks so far

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

  1. 2.3 12km SE of Pinnacles, CA
  2. 2.2 3km NNW of Pinnacles, CA
  3. 1.9 22km NNE of San Ardo, CA
  4. 1.8 19km NW of Parkfield, CA
  5. 1.7 5km NNE of Pinnacles, CA
  6. 1.6 8km NNE of Pinnacles, CA
  7. 2.2 22km NE of San Ardo, CA
  8. 1.6 21km NE of San Ardo, CA
  9. 2.4 23km WSW of New Idria, CA
  10. 2.5 18km SE of Pinnacles, CA
  11. 1.8 16km NW of Parkfield, CA
  12. 3.2 16km NW of Parkfield, CA
  13. 1.9 22km NE of San Ardo, CA
  14. 1.8 8km NE of Pinnacles, CA
  15. 1.6 7km NE 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.