QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3ml

39km ENE of Lucerne Valley, CA

· 4.8 km deep · released about 79 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Bernardino County 48 kmRiverside County 106 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 2.3 (ml)
Depth
4.8 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
San Bernardino County, 48 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2984 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 79 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 190,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 79 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 34.5635, -116.5657. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Bernardino County, CA 48 km (30 mi) SW of here earthquakes near San Bernardino County
Riverside County, CA 106 km (66 mi) NNW of here earthquakes near Riverside County
Orange County, CA 149 km (93 mi) NE of here earthquakes near Orange County

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

Aftershocks so far

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

  1. 1.6 15km NW of Ludlow, CA
  2. 1.7 5km NNW of Big Bear City, CA
  3. 1.8 14km NW of Ludlow, CA
  4. 1.6 15km NW of Ludlow, CA
  5. 1.9 35km WSW of Ludlow, CA
  6. 2.1 33km E of Barstow, CA
  7. 2.1 10km NNW of Big Bear Lake, CA
  8. 1.6 10km NNW of Big Bear Lake, CA
  9. 2.1 14km NW of Ludlow, CA
  10. 1.6 14km NW of Ludlow, CA
  11. 1.6 14km NW of Ludlow, CA
  12. 1.6 14km NW of Ludlow, CA
  13. 3.5 14km NW of Ludlow, CA
  14. 1.5 12km NNE of Morongo Valley, CA
  15. 2.5 34km E 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2016-02-20 — it released about 1,100 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.