QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

6km NNW of Lytle Creek, CA

· 11 km deep · released about 5.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Los Angeles County 68 kmOrange County 74 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 1.5 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Los Angeles County, 68 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2139 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 5.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.7 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 34.3095, -117.5347. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Los Angeles County, CA 68 km (42 mi) E of here earthquakes near Los Angeles County
Orange County, CA 74 km (46 mi) NNE of here earthquakes near Orange County
Kern County, CA 159 km (99 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

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

  1. 1.6 6km NE of Moreno Valley, CA
  2. 1.5 7km ENE of Running Springs, CA
  3. 2.2 14km NNE of Glendora, CA
  4. 1.7 5km WSW of Lytle Creek, CA
  5. 1.8 4km SE of Loma Linda, CA
  6. 1.6 5km E of Lake Arrowhead, CA
  7. 1.8 3km NNW of Loma Linda, CA
  8. 2.0 4km ESE of Mentone, CA
  9. 1.6 6km SSE of Loma Linda, CA
  10. 1.9 5km SSW of Redlands, CA
  11. 2.4 5km SSW of Redlands, CA
  12. 2.1 5km W of Devore, CA
  13. 2.0 8km E of Yorba Linda, CA
  14. 2.2 6km NE of Running Springs, CA
  15. 1.6 6km NE of Running Springs, 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 2018-08-29 — it released about 19,000 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.