QuakeIndex

quarry blast · reviewed by a seismologist

M 1.5ml

12km NE of Adelanto, CA

· -1.0 km deep · released about 5.9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 101 kmSan Bernardino County 105 kmOrange County 116 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
-1.0 km below the surface
Felt
no reports yet
Nearest
Los Angeles County, 101 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1347 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 5.9 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 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
  3. Around the size people start to feel M 3.0 160× the energy of this one
  4. This earthquake M 1.5 about 5.9 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 34.6478, -117.3080. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 101 km (63 mi) ENE of here earthquakes near Los Angeles County
San Bernardino County, CA 105 km (66 mi) WSW of here earthquakes near San Bernardino County
Orange County, CA 116 km (72 mi) NNE of here earthquakes near Orange County
Riverside County, CA 158 km (98 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

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

  1. 1.9 8km SSE of Wrightwood, CA
  2. 1.8 10km WNW of Big Bear Lake, CA
  3. 1.6 4km WNW of Devore, CA
  4. 1.8 10km NW of Big Bear Lake, CA
  5. 1.7 12km ENE of Barstow, CA
  6. 1.6 2km S of Lytle Creek, CA
  7. 1.6 3km S of Lytle Creek, CA
  8. 1.7 3km S of Lytle Creek, CA
  9. 1.6 26km SE of Boron, CA
  10. 1.5 3km W of Devore, CA
  11. 1.7 2km SE of Wrightwood, CA
  12. 1.5 2km WSW of Devore, CA
  13. 1.7 12km NE of Running Springs, CA
  14. 1.8 13km NE of Running Springs, CA
  15. 1.8 6km SSE of Barstow, 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.