QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

10km SSW of Stratford, CA

· 2.5 km deep · released about 41 lb of TNT

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10 km30 km60 km120 km N Kings County 6 kmFresno County 75 kmSan Luis Obispo County 95 kmTulare 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
2.5 km below the surface
Felt
no reports yet
Nearest
Kings County, 6 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1862 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 41 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 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 36.1047, -119.8707. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kings County, CA 6 km (4 mi) NW of here earthquakes near Kings County
Fresno County, CA 75 km (47 mi) SSW of here earthquakes near Fresno County
San Luis Obispo County, CA 95 km (59 mi) NNE of here earthquakes near San Luis Obispo County
Tulare County, CA 99 km (61 mi) W of here earthquakes near Tulare County
San Benito County, CA 123 km (76 mi) ESE of here earthquakes near San Benito County
Kern County, CA 133 km (83 mi) NW of here earthquakes near Kern County

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

Aftershocks so far

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

  1. 1.7 12km N of Huron, CA
  2. 1.8 9km SSE of Huron, CA
  3. 2.3 17km SW of Corcoran, CA
  4. 2.2 5km NW of Avenal, CA
  5. 1.7 8km SSE of Kettleman City, CA
  6. 1.9 3km SW of Huron, CA
  7. 1.5 13km SW of Huron, CA
  8. 1.8 6km NNE of Avenal, CA
  9. 2.6 10km NNE of Avenal, CA
  10. 1.5 34km S of Kettleman City, CA
  11. 1.8 11km ENE of Coalinga, CA
  12. 2.3 10km ENE of Coalinga, CA
  13. 2.1 19km ESE of Kettleman City, CA
  14. 2.1 19km ESE of Kettleman City, CA
  15. 1.9 18km ESE of Kettleman City, 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 4.0 on 2018-11-27 — it released about 730 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.