QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

18km SSW of Cantua Creek, CA

· 13 km deep · released about 47 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kings County 64 kmSan Benito County 65 kmMonterey County 81 kmFresno County 81 kmMerced County 96 kmSan Luis Obispo County 109 kmMadera County 111 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 2.1 (md)
Depth
13 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Kings County, 64 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3205 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 47 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 36.3683, -120.4230. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kings County, CA 64 km (40 mi) WNW of here earthquakes near Kings County
San Benito County, CA 65 km (40 mi) ESE of here earthquakes near San Benito County
Monterey County, CA 81 km (50 mi) E of here earthquakes near Monterey County
Fresno County, CA 81 km (51 mi) WSW of here earthquakes near Fresno County
Merced County, CA 96 km (59 mi) SSE of here earthquakes near Merced County
San Luis Obispo County, CA 109 km (68 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

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

  1. 1.7 2km SSW of New Idria, CA
  2. 1.6 23km SE of Pinnacles, CA
  3. 2.6 17km NW of Parkfield, CA
  4. 1.6 24km NNE of San Ardo, CA
  5. 2.4 3km SSW of Huron, CA
  6. 2.1 24km NE of King City, CA
  7. 1.6 12km WSW of Huron, CA
  8. 1.7 12km WSW of Huron, CA
  9. 1.5 11km NNW of Coalinga, CA
  10. 1.7 15km NW of Parkfield, CA
  11. 1.9 14km N of New Idria, CA
  12. 1.6 11km E of Coalinga, CA
  13. 2.5 12km E of Coalinga, CA
  14. 2.1 16km NW of Parkfield, CA
  15. 2.1 10km N of Coalinga, 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.