QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

4km NE of Whittier, CA

· 29 km deep · released about 9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 32 kmOrange County 42 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 1.6 (ml)
Depth
29 km below the surface
Felt
no reports yet
Nearest
Los Angeles County, 32 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1846 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 9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 9 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 34.0038, -118.0092. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 32 km (20 mi) SE of here earthquakes near Los Angeles County
Orange County, CA 42 km (26 mi) NNW of here earthquakes near Orange County
Ventura County, CA 111 km (69 mi) ESE of here earthquakes near Ventura County
San Diego County, CA 158 km (98 mi) NW of here earthquakes near San Diego County

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

Aftershocks so far

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

  1. 1.9 3km ESE of Ontario, CA
  2. 2.2 10km NNE of Bradbury, CA
  3. 1.6 11km W of Corona, CA
  4. 1.5 1km SW of Rossmoor, CA
  5. 1.6 1km ESE of Baldwin Hills, CA
  6. 1.7 2km E of Carson, CA
  7. 1.5 2km SSW of San Dimas, CA
  8. 1.8 7km ESE of San Pedro, CA
  9. 1.7 7km SE of San Pedro, CA
  10. 2.2 4km W of Pomona, CA
  11. 1.6 4km NNE of Diamond Bar, CA
  12. 1.8 4km WSW of East Los Angeles, CA
  13. 1.6 2km SSW of Sherman Oaks, CA
  14. 1.6 2km ESE of Anaheim, CA
  15. 1.6 2km ESE of Anaheim, 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 22,000 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.