QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

10 km NE of Running Springs, CA

· 5.3 km deep · released about 64 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 96 kmSan Bernardino County 101 kmRiverside County 112 kmLos Angeles County 114 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 2.2 (ml)
Depth
5.3 km below the surface
Felt
no reports yet
Nearest
Orange County, 96 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 299 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 64 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 230,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 170,000× the energy of this one
  3. Around the size people start to feel M 3.0 15× the energy of this one
  4. This earthquake M 2.2 about 64 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 34.2698, -117.0232. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Orange County, CA 96 km (60 mi) NE of here earthquakes near Orange County
San Bernardino County, CA 101 km (63 mi) SW of here earthquakes near San Bernardino County
Riverside County, CA 112 km (69 mi) WNW of here earthquakes near Riverside County
Los Angeles County, CA 114 km (71 mi) E of here earthquakes near Los Angeles County

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

Aftershocks so far

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

  1. 1.9 2 km ENE of Banning, CA
  2. 1.6 10 km SSW of Lucerne Valley, CA
  3. 1.6 7 km NNE of Fontana, CA
  4. 2.9 7 km NNE of Fontana, CA
  5. 1.7 5 km SSW of Calimesa, CA
  6. 2.5 4 km SE of Lytle Creek, CA
  7. 1.8 3 km WNW of Cabazon, CA
  8. 1.8 2 km WNW of Cabazon, CA
  9. 1.8 12 km NNE of Cabazon, CA
  10. 1.9 3 km NE of Loma Linda, CA
  11. 1.7 5 km N of Moreno Valley, CA
  12. 2.7 5 km N of Moreno Valley, CA
  13. 2.0 3 km WNW of Cabazon, CA
  14. 2.3 2 km WNW of Cabazon, CA
  15. 1.6 9 km NNE of Banning, 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 4.5 on 2018-05-08 — it released about 2,500 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.