QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

4km ESE of Long Beach, CA

· 14 km deep · released about 52 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 35 kmLos Angeles County 47 kmVentura County 112 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
14 km below the surface
Felt
92 reports · strongest reported intensity IV
Nearest
Orange County, 35 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2536 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 92 people have reported feeling it to USGS.

How big was it?

This earthquake released about 52 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 5.8 290,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 52 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 33.7942, -118.1223. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Orange County, CA 35 km (21 mi) WNW of here earthquakes near Orange County
Los Angeles County, CA 47 km (29 mi) SSE of here earthquakes near Los Angeles County
Ventura County, CA 112 km (70 mi) ESE of here earthquakes near Ventura County

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

Aftershocks so far

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

  1. 1.6 2km NNE of Laguna Niguel, CA
  2. 1.7 14km S of Las Flores, CA
  3. 1.9 3km NNW of Walnut, CA
  4. 1.5 2km SSE of View Park-Windsor Hills, CA
  5. 1.6 3km SSW of Willowbrook, CA
  6. 2.7 12km W of Manhattan Beach, CA
  7. 1.7 2km ENE of Villa Park, CA
  8. 2.0 4km SSE of Yorba Linda, CA
  9. 2.2 8 km E of Yorba Linda, CA
  10. 1.5 11km ENE of North Tustin, CA
  11. 2.2 4km ESE of Gardena, CA
  12. 2.0 26km SW of Laguna Beach, CA
  13. 1.5 1km W of Willowbrook, CA
  14. 1.7 10km ENE of Villa Park, CA
  15. 1.8 3km SE of Rowland Heights, 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 4.4 on 2018-08-29 — it released about 2,100 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.