QuakeIndex

Earthquake · reviewed by a seismologist

M 3.6mlr

12km NNE of Banning, CA

· 20 km deep · released about 3.3 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Riverside County 85 kmOrange County 95 kmSan Bernardino County 110 kmSan Diego County 112 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 3.6 (mlr)
Depth
20 km below the surface
Felt
268 reports · strongest reported intensity IV
Measured shaking
intensity III (ShakeMap)
Nearest
Riverside County, 85 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 878 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 268 people have reported feeling it to USGS.

How big was it?

This earthquake released about 3.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.6 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 51,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,300× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,600× the energy of this one
  4. This earthquake M 3.6 about 3.3 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 6.9× more

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 34.0288, -116.8457. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Riverside County, CA 85 km (53 mi) WNW of here earthquakes near Riverside County
Orange County, CA 95 km (59 mi) ENE of here earthquakes near Orange County
San Bernardino County, CA 110 km (69 mi) SSW of here earthquakes near San Bernardino County
San Diego County, CA 112 km (70 mi) N of here earthquakes near San Diego 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. 2.7 5km NW of San Jacinto, CA
  2. 2.2 5km SSE of Hemet, CA
  3. 1.6 6km NW of San Jacinto, CA
  4. 1.6 12km NNE of Banning, CA
  5. 2.1 8km ESE of Yucaipa, CA
  6. 2.0 10km S of Idyllwild, CA
  7. 1.7 2km NNE of Colton, CA
  8. 1.5 3km ESE of Valle Vista, CA
  9. 1.8 10km WNW of Big Bear Lake, CA
  10. 1.6 13km NNE of Banning, CA
  11. 2.4 4km ESE of Loma Linda, CA
  12. 1.7 5km SSE of Mentone, CA
  13. 1.5 11km NNW of Anza, CA
  14. 1.9 10km NNW of Anza, CA
  15. 1.9 14km WNW of Anza, 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 25 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.