QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

2km SE of Big Bear City, CA

· 0.2 km deep · released about 110 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Bernardino County 90 kmRiverside County 96 kmOrange County 108 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 2.4 (ml)
Depth
0.2 km below the surface
Felt
18 reports · strongest reported intensity IV
Nearest
San Bernardino County, 90 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3421 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 18 people have reported feeling it to USGS.

How big was it?

This earthquake released about 110 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 140,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 99,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.8× the energy of this one
  4. This earthquake M 2.4 about 110 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 34.2492, -116.8325. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Bernardino County, CA 90 km (56 mi) SW of here earthquakes near San Bernardino County
Riverside County, CA 96 km (60 mi) NW of here earthquakes near Riverside County
Orange County, CA 108 km (67 mi) NE of here earthquakes near Orange County

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

Aftershocks so far

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

  1. 3.6 10 km ESE of Big Bear City, California
  2. 1.7 5 km E of Running Springs, California
  3. 3.0 37 km ENE of Lucerne Valley, California
  4. 1.9 37 km ENE of Lucerne Valley, California
  5. 1.7 3 km NW of Garnet, California
  6. 2.0 3 km NW of Garnet, California
  7. 1.7 2 km SE of Big Bear City, California
  8. 1.7 2 km SE of Loma Linda, California
  9. 2.3 1 km NE of Loma Linda, California
  10. 3.0 2 km W of San Bernardino, California
  11. 1.7 15 km NNE of Apple Valley, California
  12. 2.2 8 km ESE of Oak Glen, California
  13. 2.1 0 km WNW of Cherry Valley, California
  14. 2.1 36km ENE of Lucerne Valley, CA
  15. 1.9 8km ESE of Yucaipa, 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 1,100 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.