QuakeIndex

quarry blast · reviewed by a seismologist

M 1.6ml

8km E of Lebec, CA

· -1.2 km deep · released about 7.3 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kern County 56 kmVentura County 63 kmLos Angeles County 87 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
-1.2 km below the surface
Felt
no reports yet
Nearest
Kern County, 56 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1188 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

USGS catalogues this as quarry blast, not an earthquake.

How big was it?

This earthquake released about 7.3 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 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.3 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 34.8482, -118.7815. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kern County, CA 56 km (35 mi) S of here earthquakes near Kern County
Ventura County, CA 63 km (39 mi) NNE of here earthquakes near Ventura County
Los Angeles County, CA 87 km (54 mi) NNW of here earthquakes near Los Angeles County
Santa Barbara County, CA 120 km (75 mi) ENE of here earthquakes near Santa Barbara County

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

Aftershocks so far

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

  1. 1.5 11 km ENE of Pine Mountain Club, CA
  2. 3.4 11 km WSW of Grapevine, CA
  3. 1.8 8 km ENE of Lebec, CA
  4. 2.2 2 km SSE of Frazier Park, CA
  5. 1.5 12 km SE of Tehachapi, CA
  6. 1.9 16 km N of Fillmore, CA
  7. 1.6 20km ENE of Arvin, CA
  8. 1.6 7km WNW of Castaic, CA
  9. 1.9 6km SSE of Frazier Park, CA
  10. 2.5 17km NNW of Fillmore, CA
  11. 1.8 16km SSW of Tehachapi, CA
  12. 1.8 16km N of Fillmore, CA
  13. 1.8 18km NW of Grapevine, CA
  14. 1.8 18km NW of Grapevine, CA
  15. 1.6 16km SSW of Tehachapi, 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 4.1 on 2016-03-12 — it released about 6,500 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.