QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

9 km SSE of Huron, California

· 9.7 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kings County 24 kmFresno County 80 kmSan Luis Obispo County 89 kmSan Benito County 106 kmMonterey County 113 kmTulare County 116 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 3.1 (ml)
Depth
9.7 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Kings County, 24 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3366 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 260,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,200× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.4× more

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 36.1233, -120.0700. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kings County, CA 24 km (15 mi) WNW of here earthquakes near Kings County
Fresno County, CA 80 km (50 mi) SSW of here earthquakes near Fresno County
San Luis Obispo County, CA 89 km (55 mi) NNE of here earthquakes near San Luis Obispo County
San Benito County, CA 106 km (66 mi) ESE of here earthquakes near San Benito County
Monterey County, CA 113 km (70 mi) E of here earthquakes near Monterey County
Tulare County, CA 116 km (72 mi) W of here earthquakes near Tulare County

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

Aftershocks so far

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

  1. 2.0 22 km SSE of Kettleman City, California
  2. 2.1 19 km NW of Parkfield, California
  3. 1.8 8 km WSW of Huron, California
  4. 3.4 17 km N of Coalinga, California
  5. 1.6 11 km SSE of Kettleman City, California
  6. 1.7 9 km NE of Coalinga, California
  7. 1.7 17 km N of Coalinga, California
  8. 2.1 15 km SSW of Kettleman City, California
  9. 1.9 8 km NNE of Huron, California
  10. 1.6 13 km NNW of Coalinga, California
  11. 1.7 15 km NW of Parkfield, California
  12. 1.6 5 km NW of Parkfield, California
  13. 2.8 18 km NW of Parkfield, California
  14. 1.6 9 km ENE of Coalinga, California
  15. 2.7 8 km ENE of Coalinga, 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.