QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

3km NW of Lytle Creek, CA

· 7.7 km deep · released about 170 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 69 kmOrange County 71 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 2.5 (ml)
Depth
7.7 km below the surface
Felt
14 reports · strongest reported intensity III
Nearest
Los Angeles County, 69 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3164 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 14 people have reported feeling it to USGS.

How big was it?

This earthquake released about 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 63,000× the energy of this one
  3. Around the size people start to feel M 3.0 5.6× the energy of this one
  4. This earthquake M 2.5 about 170 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 34.2772, -117.5210. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 69 km (43 mi) E of here earthquakes near Los Angeles County
Orange County, CA 71 km (44 mi) NNE of here earthquakes near Orange County
Kern County, CA 162 km (101 mi) SE of here earthquakes near Kern County

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

Aftershocks so far

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

  1. 1.6 5km SE of Lytle Creek, CA
  2. 1.7 9km NNW of Rancho Cucamonga, CA
  3. 1.6 3km SE of Loma Linda, CA
  4. 1.5 5km SE of Loma Linda, CA
  5. 1.7 2km NNE of Colton, CA
  6. 3.0 6km NE of Fontana, CA
  7. 2.1 4km ESE of Lytle Creek, CA
  8. 3.2 4km ESE of Lytle Creek, CA
  9. 1.8 4km NNE of Fontana, CA
  10. 1.8 6km SSE of Loma Linda, CA
  11. 1.7 10km WNW of Big Bear Lake, CA
  12. 2.3 5km NNW of Pearblossum, CA
  13. 1.6 7km SSW of Littlerock, CA
  14. 1.6 8km N of Fontana, CA
  15. 2.2 5km NNW of Mountain View Acres, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.