QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

24 km NE of San Lucas, California

· 8.1 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Benito County 40 kmMonterey County 41 kmKings County 97 kmMerced County 100 kmSan Luis Obispo County 108 kmFresno County 119 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
8.1 km below the surface
Felt
no reports yet
Nearest
San Benito County, 40 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3385 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 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 36.3037, -120.8612. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Benito County, CA 40 km (25 mi) SSE of here earthquakes near San Benito County
Monterey County, CA 41 km (26 mi) E of here earthquakes near Monterey County
Kings County, CA 97 km (60 mi) WNW of here earthquakes near Kings County
Merced County, CA 100 km (62 mi) S of here earthquakes near Merced County
San Luis Obispo County, CA 108 km (67 mi) NNW of here earthquakes near San Luis Obispo County
Fresno County, CA 119 km (74 mi) WSW of here earthquakes near Fresno County

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

Aftershocks so far

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

  1. 1.7 17 km N of Coalinga, California
  2. 2.1 22 km NE of Soledad, California
  3. 1.8 23 km ENE of Soledad, California
  4. 1.6 13 km NNW of Coalinga, California
  5. 1.7 25 km NE of San Lucas, California
  6. 1.8 22 km NNE of Soledad, California
  7. 1.6 2 km SE of San Ardo, California
  8. 2.1 7 km WSW of Three Rocks, California
  9. 1.9 22 km NE of San Lucas, California
  10. 1.7 15 km NW of Parkfield, California
  11. 1.7 32 km SE of Tres Pinos, California
  12. 1.7 24 km NE of King City, California
  13. 1.7 34 km WSW of Three Rocks, California
  14. 1.7 18 km SSE of Tres Pinos, California
  15. 1.8 6 km WSW of San Ardo, 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.