QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

10km NNE of Bradbury, CA

· 6.7 km deep · released about 58 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 30 kmOrange County 63 kmVentura County 111 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
6.7 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Los Angeles County, 30 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1759 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 58 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 5.8 260,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 58 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 34.2278, -117.9345. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 30 km (19 mi) E of here earthquakes near Los Angeles County
Orange County, CA 63 km (39 mi) NNW of here earthquakes near Orange County
Ventura County, CA 111 km (69 mi) E of here earthquakes near Ventura County

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

Aftershocks so far

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

  1. 2.2 7km SSW of Littlerock, CA
  2. 1.6 7km SSE of Littlerock, CA
  3. 1.8 8km N of Glendora, CA
  4. 2.1 3km NE of Gardena, CA
  5. 1.6 2km NNW of Fontana, CA
  6. 1.7 6km WNW of Fontana, CA
  7. 2.6 2km WSW of Silver Lake, CA
  8. 1.5 0km SSW of View Park-Windsor Hills, CA
  9. 1.7 4km NNW of Fontana, CA
  10. 2.1 2km S of Devore, CA
  11. 1.9 2km S of Devore, CA
  12. 2.6 4km NNW of Fontana, CA
  13. 2.0 4km NW of Fontana, CA
  14. 2.1 1km WSW of View Park-Windsor Hills, CA
  15. 3.3 1km SE of South Gate, 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 3,300 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.