QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

4km SW of Huron, CA

· 15 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kings County 30 kmFresno County 78 kmSan Luis Obispo County 92 kmSan Benito County 99 kmMonterey County 107 kmMadera County 120 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
15 km below the surface
Felt
no reports yet
Nearest
Kings County, 30 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3068 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 36.1760, -120.1262. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kings County, CA 30 km (19 mi) WNW of here earthquakes near Kings County
Fresno County, CA 78 km (48 mi) SSW of here earthquakes near Fresno County
San Luis Obispo County, CA 92 km (57 mi) NNE of here earthquakes near San Luis Obispo County
San Benito County, CA 99 km (61 mi) ESE of here earthquakes near San Benito County
Monterey County, CA 107 km (66 mi) E of here earthquakes near Monterey County
Madera County, CA 120 km (74 mi) SSW of here earthquakes near Madera County

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

Aftershocks so far

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

  1. 1.8 0km E of Kettleman City, CA
  2. 1.6 12km WNW of Avenal, CA
  3. 1.5 12km WNW of Avenal, CA
  4. 2.5 13km WNW of Avenal, CA
  5. 1.5 19km NW of Parkfield, CA
  6. 2.5 11km SSE of Cantua Creek, CA
  7. 1.7 4km NNW of Cholame, CA
  8. 1.7 10km WSW of Huron, CA
  9. 2.1 5km WNW of Kettleman City, CA
  10. 2.8 3km NW of Kettleman City, CA
  11. 1.8 2km SSW of Huron, CA
  12. 1.9 1km ESE of Huron, CA
  13. 3.5 1km W of Parkfield, CA
  14. 2.3 9km S of Riverdale, CA
  15. 1.8 14km 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.