QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6mw

11km WSW of Huron, CA

· 9.0 km deep · released about 4.2 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kings County 37 kmFresno County 83 kmSan Luis Obispo County 89 kmSan Benito County 93 kmMonterey County 99 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 3.6 (mw)
Depth
9.0 km below the surface
Felt
35 reports · strongest reported intensity III
Measured shaking
intensity IV (ShakeMap)
Nearest
Kings County, 37 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1891 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 35 people have reported feeling it to USGS.

How big was it?

This earthquake released about 4.2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 40,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,800× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,300× the energy of this one
  4. This earthquake M 3.6 about 4.2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 8.8× 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 36.1632, -120.2117. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kings County, CA 37 km (23 mi) WNW of here earthquakes near Kings County
Fresno County, CA 83 km (52 mi) SW 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 93 km (58 mi) ESE of here earthquakes near San Benito County
Monterey County, CA 99 km (62 mi) E of here earthquakes near Monterey County
Merced County, CA 123 km (77 mi) SSE of here earthquakes near Merced County

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

Aftershocks so far

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

  1. 1.6 6km NNW of Cholame, CA
  2. 2.4 7km NW of Lemoore, CA
  3. 1.5 10km SE of Avenal, CA
  4. 1.6 6km WSW of Kettleman City, CA
  5. 3.2 4km NNW of Cholame, CA
  6. 2.8 10km W of Avenal, CA
  7. 1.9 10km W of Avenal, CA
  8. 2.2 11km NW of Parkfield, CA
  9. 2.8 23km NW of Parkfield, CA
  10. 1.6 13km NW of Avenal, CA
  11. 2.3 5km SSE of Parkfield, CA
  12. 3.8 15km SSE of New Idria, CA
  13. 1.9 9km NNW of Avenal, CA
  14. 1.5 7km NNW of Cholame, CA
  15. 1.8 25km NW of Parkfield, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2019-12-17 — it released about 9.8 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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