QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

10km SSE of Lucerne Valley, CA

· 7.4 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Bernardino County 86 kmRiverside County 109 kmOrange County 111 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 1.7 (ml)
Depth
7.4 km below the surface
Felt
no reports yet
Nearest
San Bernardino County, 86 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2896 days ago

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

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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 34.3632, -116.9100. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Bernardino County, CA 86 km (54 mi) SW of here earthquakes near San Bernardino County
Riverside County, CA 109 km (68 mi) NW of here earthquakes near Riverside County
Orange County, CA 111 km (69 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

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

  1. 3.4 8km ESE of Lucerne Valley, CA
  2. 2.0 5km SE of Loma Linda, CA
  3. 1.9 3km SW of San Bernardino, CA
  4. 1.6 1km SSW of Colton, CA
  5. 1.7 4km N of Cabazon, CA
  6. 1.6 34km NE of Lucerne Valley, CA
  7. 1.7 8km N of Big Bear Lake, CA
  8. 1.6 8km NNE of Beaumont, CA
  9. 1.7 4km SE of Calimesa, CA
  10. 1.9 1km NNE of Loma Linda, CA
  11. 1.8 6km SSE of Mentone, CA
  12. 1.8 6km SSE of Mentone, CA
  13. 1.5 17km NNE of Apple Valley, CA
  14. 1.6 34km NE of Lucerne Valley, CA
  15. 1.6 3km SSE of Redlands, 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 4.5 on 2018-05-08 — it released about 15,000 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.