QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

23km N of Yucca Valley, CA

· 6.9 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Bernardino County 65 kmRiverside County 78 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
6.9 km below the surface
Felt
no reports yet
Nearest
San Bernardino County, 65 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2489 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 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× 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 34.3195, -116.4560. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Bernardino County, CA 65 km (40 mi) SSW of here earthquakes near San Bernardino County
Riverside County, CA 78 km (48 mi) NNW of here earthquakes near Riverside County

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

Aftershocks so far

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

  1. 1.5 40km WSW of Ludlow, CA
  2. 2.9 10km NE of Big Bear City, CA
  3. 1.7 10km NE of Big Bear City, CA
  4. 2.4 10km NE of Big Bear City, CA
  5. 1.9 8km NE of Cabazon, CA
  6. 2.1 6km NNW of Big Bear Lake, CA
  7. 1.7 3km SSW of Big Bear City, CA
  8. 1.8 11km NNW of Big Bear Lake, CA
  9. 1.6 8km SE of Yucca Valley, CA
  10. 1.5 40km SW of Ludlow, CA
  11. 1.9 9km NNE of Banning, CA
  12. 2.0 3km E of Yucca Valley, CA
  13. 2.2 13km NNE of Thousand Palms, CA
  14. 2.4 9km SW of Morongo Valley, CA
  15. 2.4 26km NNW of Twentynine Palms, 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.