QuakeIndex

Earthquake · reviewed by a seismologist

M 3.7mw

25 km WSW of Volta, California

· 2.0 km deep · released about 5 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Merced County 46 kmSan Benito County 48 kmSanta Clara County 49 kmStanislaus County 62 kmSanta Cruz County 72 kmMonterey County 88 kmAlameda County 93 kmSan Joaquin County 101 kmSan Mateo County 112 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 3.7 (mw)
Depth
2.0 km below the surface
Felt
21 reports · strongest reported intensity III
Measured shaking
intensity V (ShakeMap)
Nearest
Merced County, 46 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2914 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 21 people have reported feeling it to USGS.

How big was it?

This earthquake released about 5 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 34,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,100× the energy of this one
  4. This earthquake M 3.7 about 5 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 10× 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 37.0295, -121.1982. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Merced County, CA 46 km (29 mi) WSW of here earthquakes near Merced County
San Benito County, CA 48 km (30 mi) NNW of here earthquakes near San Benito County
Santa Clara County, CA 49 km (30 mi) ESE of here earthquakes near Santa Clara County
Stanislaus County, CA 62 km (38 mi) SSW of here earthquakes near Stanislaus County
Santa Cruz County, CA 72 km (45 mi) E of here earthquakes near Santa Cruz County
Monterey County, CA 88 km (55 mi) N of here earthquakes near Monterey 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. 1.9 14 km SSE of Tres Pinos, California
  2. 1.5 21 km NE of Soledad, California
  3. 1.8 9 km SSW of Tres Pinos, California
  4. 3.6 9 km S of Tres Pinos, California
  5. 2.3 3 km N of Hollister, California
  6. 2.1 7 km ENE of Gilroy, California
  7. 1.5 20 km SW of Gustine, California
  8. 2.0 9 km S of Tres Pinos, California
  9. 1.6 25 km WSW of Volta, California
  10. 1.5 18 km SW of Gustine, California
  11. 2.3 19 km W of Volta, California
  12. 1.6 19 km W of Volta, California
  13. 1.7 12 km S of Tres Pinos, California
  14. 1.8 2 km ENE of Aromas, California
  15. 1.6 24 km SE of Tres Pinos, California

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

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