QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

6km NE of Sierra Madre, CA

· 15 km deep · released about 280 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 23 kmOrange County 63 kmVentura County 104 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 2.6 (ml)
Depth
15 km below the surface
Felt
54 reports · strongest reported intensity IV
Nearest
Los Angeles County, 23 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 781 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 54 people have reported feeling it to USGS.

How big was it?

This earthquake released about 280 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 53,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 38,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.3× the energy of this one
  4. This earthquake M 2.6 about 280 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 34.2057, -118.0143. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 23 km (14 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 104 km (65 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

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

  1. 1.9 9 km SW of Lytle Creek, CA
  2. 1.6 2 km NE of Vincent, CA
  3. 1.5 3 km NNE of Baldwin Hills, CA
  4. 2.6 1 km SSE of View Park-Windsor Hills, CA
  5. 1.9 7 km N of Rancho Cucamonga, CA
  6. 1.6 4 km NNE of Baldwin Hills, CA
  7. 2.7 3 km E of Carson, CA
  8. 2.7 4 km ENE of Inglewood, CA
  9. 1.6 5 km NE of View Park-Windsor Hills, CA
  10. 1.7 4 km ESE of Gardena, CA
  11. 2.1 3 km NNE of Granada Hills, CA
  12. 1.7 10 km E of Santa Clarita, CA
  13. 1.7 1 km ENE of Lennox, CA
  14. 1.9 5 km SE of Ontario, CA
  15. 1.8 4km SW of Compton, 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 680 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.