QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

15 km WSW of Cantua Creek, CA

· 12 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Benito County 57 kmKings County 74 kmMonterey County 79 kmFresno County 80 kmMerced County 83 kmMadera County 104 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 1.8 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
San Benito County, 57 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 930 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 36.4725, -120.4772. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 57 km (35 mi) ESE of here earthquakes near San Benito County
Kings County, CA 74 km (46 mi) NW of here earthquakes near Kings County
Monterey County, CA 79 km (49 mi) ENE of here earthquakes near Monterey County
Fresno County, CA 80 km (50 mi) WSW of here earthquakes near Fresno County
Merced County, CA 83 km (52 mi) SSE of here earthquakes near Merced County
Madera County, CA 104 km (65 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

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

  1. 1.5 23 km NE of San Ardo, CA
  2. 1.6 24 km SE of Pinnacles, CA
  3. 1.8 23 km ENE of Pinnacles, CA
  4. 1.6 13 km NE of Coalinga, CA
  5. 2.1 18 km SSW of New Idria, CA
  6. 2.1 11 km NE of Coalinga, CA
  7. 1.7 9 km WNW of New Idria, CA
  8. 2.5 15 km W of Cantua Creek, CA
  9. 1.7 15 km W of Cantua Creek, CA
  10. 2.5 15 km W of Cantua Creek, CA
  11. 2.4 12 km NE of Coalinga, CA
  12. 2.9 13 km NE of Coalinga, CA
  13. 1.5 4 km SSW of New Idria, CA
  14. 1.7 12 km NE of Coalinga, CA
  15. 2.3 12 km NE 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.