QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

7km SSW of Littlerock, CA

· 8.2 km deep · released about 56 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 38 kmOrange County 90 kmVentura County 104 kmKern County 118 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
8.2 km below the surface
Felt
no reports yet
Nearest
Los Angeles County, 38 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1670 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 56 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 5.8 270,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 190,000× the energy of this one
  3. Around the size people start to feel M 3.0 17× the energy of this one
  4. This earthquake M 2.2 about 56 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 34.4642, -118.0055. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 38 km (24 mi) NE of here earthquakes near Los Angeles County
Orange County, CA 90 km (56 mi) NNW of here earthquakes near Orange County
Ventura County, CA 104 km (65 mi) E of here earthquakes near Ventura County
Kern County, CA 118 km (73 mi) SE of here earthquakes near Kern County

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

Aftershocks so far

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

  1. 1.7 8km N of Rancho Cucamonga, CA
  2. 1.5 3km SSE of Duarte, CA
  3. 3.0 6km ESE of Wrightwood, CA
  4. 1.5 14km NE of Glendora, CA
  5. 1.6 3km ESE of Granada Hills, CA
  6. 1.6 4km SSW of Llano, CA
  7. 1.8 3km NE of Silver Lake, CA
  8. 1.7 3km SW of La Verne, CA
  9. 1.5 6km SSE of Pearblossom, CA
  10. 1.7 8km ESE of Santa Clarita, CA
  11. 1.7 2km SSE of Charter Oak, CA
  12. 1.8 2km WNW of Glendora, CA
  13. 1.6 2km ENE of Granada Hills, CA
  14. 1.7 7km SW of Pearblossom, CA
  15. 1.6 4km SSW of Llano, 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 2020-09-19 — it released about 3,500 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.