QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

11km WSW of Huron, CA

· 17 km deep · released about 40 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kings County 37 kmFresno County 84 kmSan Luis Obispo County 88 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 2.1 (md)
Depth
17 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Kings County, 37 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1282 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 40 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 380,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 270,000× the energy of this one
  3. Around the size people start to feel M 3.0 24× the energy of this one
  4. This earthquake M 2.1 about 40 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 36.1572, -120.2147. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kings County, CA 37 km (23 mi) WNW of here earthquakes near Kings County
Fresno County, CA 84 km (52 mi) SW of here earthquakes near Fresno County
San Luis Obispo County, CA 88 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 124 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

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

  1. 2.8 6 km NW of Parkfield, CA
  2. 4.3 6 km NW of Parkfield, CA
  3. 1.5 23 km NE of San Ardo, CA
  4. 1.6 12 km E of Coalinga, CA
  5. 1.5 7 km S of Kettleman City, CA
  6. 1.7 7 km NNE of Coalinga, CA
  7. 1.6 11 km ENE of Coalinga, CA
  8. 1.6 11 km ENE of Coalinga, CA
  9. 1.6 10 km ENE of Coalinga, CA
  10. 2.5 7 km E of Avenal, CA
  11. 1.7 7 km E of Avenal, CA
  12. 2.0 8 km SSW of Stratford, CA
  13. 2.1 15 km SSE of Stratford, CA
  14. 1.7 5 km WNW of Kettleman City, CA
  15. 1.8 13 km SSE of Cantua Creek, 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 2,100 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.