QuakeIndex

quarry blast · reviewed by a seismologist

M 1.5ml

10km ENE of Adelanto, CA

· -1.3 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 100 kmSan Bernardino County 106 kmOrange County 115 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 1.5 (ml)
Depth
-1.3 km below the surface
Felt
no reports yet
Nearest
Los Angeles County, 100 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1423 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 34.6312, -117.3118. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 100 km (62 mi) ENE of here earthquakes near Los Angeles County
San Bernardino County, CA 106 km (66 mi) WSW of here earthquakes near San Bernardino County
Orange County, CA 115 km (71 mi) NNE of here earthquakes near Orange County
Riverside County, CA 157 km (97 mi) NW of here earthquakes near Riverside County

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

Aftershocks so far

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

  1. 1.5 3km W of Devore, CA
  2. 1.7 2km SE of Wrightwood, CA
  3. 1.9 9km WNW of Big Bear Lake, CA
  4. 1.5 2km WSW of Devore, CA
  5. 1.7 12km NE of Running Springs, CA
  6. 1.6 10km W of Big Bear Lake, CA
  7. 1.8 13km NE of Running Springs, CA
  8. 1.8 6km SSE of Barstow, CA
  9. 1.5 12km NE of Adelanto, CA
  10. 2.1 4km WNW of Devore, CA
  11. 1.8 10km SSE of Lucerne Valley, CA
  12. 1.8 11km SSE of Lucerne Valley, CA
  13. 2.1 10km SSE of Lucerne Valley, CA
  14. 2.3 10km SSE of Lucerne Valley, CA
  15. 1.9 11km SSE of Lucerne Valley, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.