Earthquake · reviewed by a seismologist
M 2.5ml
14km S of Big Bear Lake, CA
- When
- Magnitude
- M 2.5 (ml)
- Depth
- 7.4 km below the surface
- Felt
- 4 reports · strongest reported intensity III
- Nearest
- Orange County, 94 km WSW
- 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. 4 people have reported feeling it to USGS.
How big was it?
This earthquake released about 150 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.
- Mineral, Virginia 2011 M 5.8 100,000× the energy of this one
- Magna, Utah 2020 M 5.7 72,000× the energy of this one
- Around the size people start to feel M 3.0 6.5× the energy of this one
- This earthquake M 2.5 about 150 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 34.1207, -116.9117. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Orange County, CA | 94 km (58 mi) | ENE of here | earthquakes near Orange County |
| Riverside County, CA | 94 km (59 mi) | WNW of here | earthquakes near Riverside County |
| San Bernardino County, CA | 106 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
56 earthquakes have been recorded within 50 km since this one.
- 2.1 6km SE of Valle Vista, CA
- 1.5 3km NE of Fontana, CA
- 1.8 4km SE of Loma Linda, CA
- 1.9 11km NE of Running Springs, CA
- 1.6 7km NE of Banning, CA
- 1.7 4km SE of Yucaipa, CA
- 1.9 4km NNE of Cabazon, CA
- 3.0 3km SE of Yucca Valley, CA
- 1.5 2km NNE of Colton, CA
- 1.6 3km NNE of Colton, CA
- 1.8 2km NNW of San Bernardino, CA
- 1.6 8km ESE of Valle Vista, CA
- 1.7 6km WSW of Idyllwild, CA
- 2.2 1km NNW of Lake Arrowhead, CA
- 1.8 6km E of Calimesa, 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 790 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.