QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

12km SSE of Big Bear City, CA

· 5.5 km deep · released about 31 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Riverside County 88 kmSan Bernardino County 97 kmOrange County 104 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 2.0 (ml)
Depth
5.5 km below the surface
Felt
no reports yet
Nearest
Riverside County, 88 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3723 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 31 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 480,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 340,000× the energy of this one
  3. Around the size people start to feel M 3.0 31× the energy of this one
  4. This earthquake M 2.0 about 31 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 34.1568, -116.8093. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Riverside County, CA 88 km (55 mi) WNW of here earthquakes near Riverside County
San Bernardino County, CA 97 km (60 mi) SW of here earthquakes near San Bernardino County
Orange County, CA 104 km (65 mi) ENE of here earthquakes near Orange County

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

Aftershocks so far

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

  1. 2.0 6km SW of Banning, CA
  2. 2.8 4km SE of Loma Linda, CA
  3. 2.5 2km NNE of Loma Linda, CA
  4. 3.1 13km WNW of Morongo Valley, CA
  5. 2.2 32km ENE of Big Bear City, CA
  6. 3.4 32km ENE of Big Bear City, CA
  7. 1.5 3km ENE of Banning, CA
  8. 2.1 4km NNW of San Jacinto, CA
  9. 1.6 2km SSE of Loma Linda, CA
  10. 1.6 5km SSW of Banning, CA
  11. 1.7 10km NNW of Banning, CA
  12. 2.3 8km NE of Desert Hot Springs, CA
  13. 1.5 37km N of Yucca Valley, CA
  14. 2.4 2km NE of Colton, CA
  15. 1.8 5km NW of Big Bear City, 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 4.4 on 2016-01-06 — it released about 3,700 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.