Earthquake · reviewed by a seismologist
M 2.3ml
39km WSW of Ludlow, CA
- When
- Magnitude
- M 2.3 (ml)
- Depth
- 8.0 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- San Bernardino County, 44 km NE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1459 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.
How big was it?
This earthquake released about 82 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 180,000× the energy of this one
- Magna, Utah 2020 M 5.7 130,000× the energy of this one
- Around the size people start to feel M 3.0 12× the energy of this one
- This earthquake M 2.3 about 82 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 34.6252, -116.5697. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| San Bernardino County, CA | 44 km (27 mi) | SW of here | earthquakes near San Bernardino County |
| Riverside County, CA | 112 km (70 mi) | NNW of here | earthquakes near Riverside County |
| Orange County, CA | 153 km (95 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
48 earthquakes have been recorded within 50 km since this one.
- 1.8 28km E of Barstow, CA
- 1.8 18km SW of Ludlow, CA
- 2.0 20km ENE of Big Bear City, CA
- 1.9 28km ENE of Barstow, CA
- 1.9 28km ENE of Barstow, CA
- 2.5 28km ENE of Barstow, CA
- 3.6 28km ENE of Barstow, CA
- 1.5 37km NE of Big Bear City, CA
- 2.5 34km NE of Lucerne Valley, CA
- 1.5 4km E of Big Bear City, CA
- 1.7 32km N of Yucca Valley, CA
- 2.6 21km NW of Ludlow, CA
- 2.1 17km ENE of Big Bear City, CA
- 1.6 8km ESE of Big Bear City, CA
- 1.5 29km WNW of Ludlow, 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 4.3 on 2016-02-20 — it released about 1,100 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.