QuakeIndex

quarry blast · reviewed by a seismologist

M 1.6ml

9km ENE of Adelanto, CA

· -1.4 km deep · released about 7.8 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 99 kmSan Bernardino County 107 kmOrange County 113 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
-1.4 km below the surface
Felt
no reports yet
Nearest
Los Angeles County, 99 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3258 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 7.8 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 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 7.8 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 34.6195, -117.3172. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 99 km (61 mi) ENE of here earthquakes near Los Angeles County
San Bernardino County, CA 107 km (67 mi) WSW of here earthquakes near San Bernardino County
Orange County, CA 113 km (70 mi) NNE of here earthquakes near Orange 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. 1.9 11km SSE of Lucerne Valley, CA
  2. 2.6 7km NW of Big Bear Lake, CA
  3. 2.0 5km SSW of Lytle Creek, CA
  4. 1.8 9km NNW of Big Bear Lake, CA
  5. 2.3 16km NNE of Lucerne Valley, CA
  6. 1.5 1km NE of Lytle Creek, CA
  7. 1.5 2km WSW of Devore, CA
  8. 2.5 3km NW of Lytle Creek, CA
  9. 1.8 11km NE of Running Springs, CA
  10. 1.6 11km SE of Lucerne Valley, CA
  11. 2.1 11km N of Big Bear Lake, CA
  12. 1.8 10km NNE of Running Springs, CA
  13. 1.6 2km W of Devore, CA
  14. 1.6 9km NNW of Big Bear Lake, CA
  15. 2.5 10km N of Lytle Creek, 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.