Earthquake · reviewed by a seismologist
M 2.9ml
14km S of Big Bear Lake, CA
- When
- Magnitude
- M 2.9 (ml)
- Depth
- 6.5 km below the surface
- Felt
- 12 reports · strongest reported intensity III
- Measured shaking
- intensity IV (ShakeMap)
- Nearest
- Orange County, 93 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1516 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 12 people have reported feeling it to USGS.
How big was it?
This earthquake released about 750 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 20,000× the energy of this one
- Magna, Utah 2020 M 5.7 14,000× the energy of this one
- Around the size people start to feel M 3.0 1.3× the energy of this one
- This earthquake M 2.9 about 750 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 34.1168, -116.9227. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Orange County, CA | 93 km (58 mi) | ENE of here | earthquakes near Orange County |
| Riverside County, CA | 95 km (59 mi) | WNW of here | earthquakes near Riverside County |
| San Bernardino County, CA | 107 km (66 mi) | SW of here | earthquakes near San Bernardino County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
53 earthquakes have been recorded within 50 km since this one.
- 1.9 5km SW of Idyllwild, CA
- 1.6 12km SSE of Big Bear City, CA
- 1.6 13km W of Morongo Valley, CA
- 1.6 4km N of Big Bear City, CA
- 1.6 10km NE of Cabazon, CA
- 3.3 10km NE of Cabazon, CA
- 1.6 14km S of Big Bear Lake, CA
- 1.6 5km NE of Cabazon, CA
- 2.2 5km NW of Big Bear City, CA
- 1.9 12km NW of Big Bear Lake, CA
- 1.5 9km N of Big Bear City, CA
- 1.8 9km N of Banning, CA
- 1.6 8km NE of Nuevo, CA
- 1.6 11km E of Yucaipa, CA
- 2.0 1km ESE 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 150 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.