QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

12km SW of Big Bear Lake, CA

· 12 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Orange County 90 kmRiverside County 102 kmSan Bernardino County 107 kmLos Angeles County 117 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 1.6 (ml)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Orange County, 90 km SW
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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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, -116.9865. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Orange County, CA 90 km (56 mi) NE of here earthquakes near Orange County
Riverside County, CA 102 km (64 mi) WNW of here earthquakes near Riverside County
San Bernardino County, CA 107 km (67 mi) SW of here earthquakes near San Bernardino County
Los Angeles County, CA 117 km (73 mi) E of here earthquakes near Los Angeles County

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

Aftershocks so far

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

  1. 2.1 6km N of Lytle Creek, CA
  2. 1.5 2km NNE of Colton, CA
  3. 1.6 3km NNE of Colton, CA
  4. 1.8 2km NNW of San Bernardino, CA
  5. 2.2 1km NNW of Lake Arrowhead, CA
  6. 1.8 6km E of Calimesa, CA
  7. 1.5 10km NNW of Banning, CA
  8. 1.6 5km NW of Idyllwild, CA
  9. 3.0 5km SE of Lytle Creek, CA
  10. 2.5 6km S of Redlands, CA
  11. 1.6 11km SSW of Big Bear Lake, CA
  12. 1.6 4km WNW of Cabazon, CA
  13. 2.7 2km ESE of Loma Linda, CA
  14. 2.7 4km WNW of Cabazon, CA
  15. 2.4 2km SE of Loma Linda, 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 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.