QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

4km SSW of Armona, CA

· 20 km deep · released about 94 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kings County 25 kmFresno County 54 kmTulare County 84 kmMadera County 103 kmSan Luis Obispo County 119 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 2.3 (md)
Depth
20 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Kings County, 25 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1733 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 94 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 160,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 94 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 36.2817, -119.7162. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kings County, CA 25 km (15 mi) NNE of here earthquakes near Kings County
Fresno County, CA 54 km (33 mi) S of here earthquakes near Fresno County
Tulare County, CA 84 km (52 mi) W of here earthquakes near Tulare County
Madera County, CA 103 km (64 mi) S of here earthquakes near Madera County
San Luis Obispo County, CA 119 km (74 mi) NNE of here earthquakes near San Luis Obispo County
Merced County, CA 135 km (84 mi) SE of here earthquakes near Merced County

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

Aftershocks so far

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

  1. 1.6 9km NNW of Avenal, CA
  2. 1.6 10km NNW of Avenal, CA
  3. 1.9 14km SSE of Kettleman City, CA
  4. 2.0 8km NNW of Avenal, CA
  5. 2.0 11km S of Home Garden, CA
  6. 1.7 8km NNW of Avenal, CA
  7. 1.8 11km ENE of Kettleman City, CA
  8. 1.7 22km SE of Kettleman City, CA
  9. 2.4 12km E of Coalinga, CA
  10. 1.6 12km E of Coalinga, CA
  11. 1.6 11km E of Coalinga, CA
  12. 2.1 16km SE of Kettleman City, CA
  13. 2.2 12km ESE of Huron, CA
  14. 1.9 12km NNW of Kettleman City, CA
  15. 1.7 10km WSW of Huron, 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 320 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.