QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

33 km WSW of Three Rocks, California

· 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 40 kmMonterey County 54 kmMerced County 90 kmKings County 90 kmFresno County 106 kmSan Luis Obispo County 114 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, 40 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3321 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 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× 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 36.3862, -120.7407. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 40 km (25 mi) SE of here earthquakes near San Benito County
Monterey County, CA 54 km (34 mi) ENE of here earthquakes near Monterey County
Merced County, CA 90 km (56 mi) S of here earthquakes near Merced County
Kings County, CA 90 km (56 mi) WNW of here earthquakes near Kings County
Fresno County, CA 106 km (66 mi) WSW of here earthquakes near Fresno County
San Luis Obispo County, CA 114 km (71 mi) NNW 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. 1.6 18 km NW of Parkfield, California
  2. 1.6 23 km ENE of San Lucas, California
  3. 2.0 23 km ENE of San Lucas, California
  4. 1.5 22 km ENE of San Lucas, California
  5. 1.9 25 km ENE of Greenfield, California
  6. 1.9 22 km NE of San Lucas, California
  7. 2.2 22 km NE of Soledad, California
  8. 2.5 22 km ENE of Soledad, California
  9. 1.6 24 km NE of King City, California
  10. 2.1 13 km NW of Parkfield, California
  11. 1.8 21 km NE of Soledad, California
  12. 2.1 22 km NE of Soledad, California
  13. 1.5 34 km NE of King City, California
  14. 2.0 18 km S of Three Rocks, CA
  15. 2.0 21 km NE of Soledad, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.