Earthquake · reviewed by a seismologist
M 1.8ml
18km ENE of Big Bear City, CA
- When
- Magnitude
- M 1.8 (ml)
- Depth
- 0.8 km below the surface
- Felt
- no reports yet
- Nearest
- San Bernardino County, 74 km NE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3189 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 730,000× the energy of this one
- Around the size people start to feel M 3.0 65× the energy of this one
- This earthquake M 1.8 about 15 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 34.3305, -116.6677. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| San Bernardino County, CA | 74 km (46 mi) | SW of here | earthquakes near San Bernardino County |
| Riverside County, CA | 91 km (56 mi) | NW of here | earthquakes near Riverside County |
| Orange County, CA | 126 km (78 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
37 earthquakes have been recorded within 50 km since this one.
- 1.8 6km ENE of Yucaipa, CA
- 1.8 11km ENE of Yucaipa, CA
- 1.6 23km N of Yucca Valley, CA
- 1.9 13km NNE of Banning, CA
- 1.7 22km N of Yucca Valley, CA
- 1.6 23km N of Yucca Valley, CA
- 1.5 4km N of Cabazon, CA
- 1.8 1km ENE of Banning, CA
- 1.8 9km NNW of Big Bear Lake, CA
- 2.3 16km NNE of Lucerne Valley, CA
- 1.6 3km E of Banning, CA
- 2.2 17km WSW of Ludlow, CA
- 1.6 11km NE of Big Bear City, CA
- 1.5 4km ENE of Cabazon, CA
- 2.1 8km NNW of Cabazon, 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 7,900 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.