QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

2km SSW of Valle Vista, CA

· 3.9 km deep · released about 860 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Diego County 79 kmOrange County 82 kmRiverside County 83 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 3.0 (ml)
Depth
3.9 km below the surface
Felt
260 reports · strongest reported intensity IV
Nearest
San Diego County, 79 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1640 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 260 people have reported feeling it to USGS.

How big was it?

This earthquake released about 860 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 390,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
  4. This earthquake M 3.0 about 860 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 33.7298, -116.8985. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Diego County, CA 79 km (49 mi) N of here earthquakes near San Diego County
Orange County, CA 82 km (51 mi) E of here earthquakes near Orange County
Riverside County, CA 83 km (52 mi) W of here earthquakes near Riverside County

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

Aftershocks so far

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

  1. 1.7 4km SE of Redlands, CA
  2. 1.8 4km SE of Redlands, CA
  3. 1.9 4km S of Idyllwild, CA
  4. 1.5 4km S of Idyllwild, CA
  5. 1.6 5km NE of Beaumont, CA
  6. 1.5 4km SE of Redlands, CA
  7. 1.5 4km ENE of Beaumont, CA
  8. 2.1 1km ENE of Yucaipa, CA
  9. 2.0 16km ESE of Anza, CA
  10. 2.3 8km NE of Cabazon, CA
  11. 2.1 5km SW of Palomar Observatory, CA
  12. 1.5 3km ESE of Loma Linda, CA
  13. 1.6 4km NE of Banning, CA
  14. 1.8 5km ENE of Beaumont, CA
  15. 1.8 2km WNW of Valle Vista, 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 4.9 on 2020-04-04 — it released about 710 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.