QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

4km NNW of Cantua Creek, CA

· 7.2 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fresno County 66 kmSan Benito County 68 kmKings County 70 kmMerced County 81 kmMadera County 91 kmMonterey County 94 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
7.2 km below the surface
Felt
16 reports · strongest reported intensity IV
Nearest
Fresno County, 66 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2608 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 16 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,300 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 6.7 250,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 11,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 7,900× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× 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 36.5380, -120.3352. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fresno County, CA 66 km (41 mi) WSW of here earthquakes near Fresno County
San Benito County, CA 68 km (42 mi) E of here earthquakes near San Benito County
Kings County, CA 70 km (43 mi) NW of here earthquakes near Kings County
Merced County, CA 81 km (50 mi) SSE of here earthquakes near Merced County
Madera County, CA 91 km (57 mi) SW of here earthquakes near Madera County
Monterey County, CA 94 km (58 mi) ENE of here earthquakes near Monterey County

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

Aftershocks so far

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

  1. 2.0 19km SSW of Cantua Creek, CA
  2. 1.9 12km WSW of Madera, CA
  3. 1.8 7km NE of Coalinga, CA
  4. 1.9 5km ESE of Huron, CA
  5. 1.8 3km SSW of Parkwood, CA
  6. 1.7 12km ENE of Coalinga, CA
  7. 1.5 12km W of Huron, CA
  8. 2.2 13km WNW of Huron, CA
  9. 2.4 7km NNW of Biola, CA
  10. 2.5 6km N of Biola, CA
  11. 2.0 14km NNE of Coalinga, CA
  12. 2.0 4km NNW of Huron, CA
  13. 1.6 13km SW of Huron, CA
  14. 2.0 10km NNW of New Idria, CA
  15. 1.9 19km SSW of Cantua Creek, 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.