QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

12km S of Joshua Tree, CA

· 7.5 km deep · released about 12 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Riverside County 44 kmSan Bernardino County 93 kmSan Diego County 119 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
7.5 km below the surface
Felt
no reports yet
Nearest
Riverside County, 44 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3518 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 12 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 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 900,000× the energy of this one
  3. Around the size people start to feel M 3.0 80× the energy of this one
  4. This earthquake M 1.7 about 12 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 34.0238, -116.3203. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Riverside County, CA 44 km (27 mi) NW of here earthquakes near Riverside County
San Bernardino County, CA 93 km (58 mi) S of here earthquakes near San Bernardino County
San Diego County, CA 119 km (74 mi) NNE of here earthquakes near San Diego County
Imperial County, CA 141 km (88 mi) NW of here earthquakes near Imperial County

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

Aftershocks so far

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

  1. 3.6 10 km ESE of Big Bear City, California
  2. 1.7 3 km NW of Garnet, California
  3. 2.0 3 km NW of Garnet, California
  4. 1.9 6 km NNE of Indio Hills, California
  5. 2.2 8 km ESE of Oak Glen, California
  6. 2.0 6 km N of Indio Hills, California
  7. 1.7 16km ENE of Thousand Palms, CA
  8. 1.5 19km N of Cabazon, CA
  9. 1.6 7km NE of Banning, CA
  10. 1.9 4km NNE of Cabazon, CA
  11. 3.0 3km SE of Yucca Valley, CA
  12. 1.6 5km NW of Idyllwild, CA
  13. 1.6 4km WNW of Cabazon, CA
  14. 1.9 8km N of Yucca Valley, CA
  15. 1.8 8km N of Yucca Valley, 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.