Earthquake · reviewed by a seismologist
M 3.9ml
4km WSW of Big Pine, CA
- When
- Magnitude
- M 3.9 (ml)
- Depth
- 8.2 km below the surface
- Felt
- 53 reports · strongest reported intensity IV
- Measured shaking
- intensity IV (ShakeMap)
- Nearest
- Esmeralda County, 93 km NE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1327 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 53 people have reported feeling it to USGS.
How big was it?
This earthquake released about 11 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.9 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 15,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 680× the energy of this one
- Magna, Utah 2020 M 5.7 480× the energy of this one
- This earthquake M 3.9 about 11 tons of TNT
- Around the size people start to feel M 3.0 this one released 23× more
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 37.1563, -118.3380. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Esmeralda County, NV | 93 km (58 mi) | SW of here | earthquakes near Esmeralda County |
| Mono County, CA | 97 km (60 mi) | SSE of here | earthquakes near Mono County |
| Inyo County, CA | 106 km (66 mi) | NW of here | earthquakes near Inyo County |
| Tulare County, CA | 110 km (69 mi) | NNE of here | earthquakes near Tulare County |
| Fresno County, CA | 125 km (78 mi) | ENE of here | earthquakes near Fresno County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
29 earthquakes have been recorded within 50 km since this one.
- 2.1 16km N of Deep Springs, CA
- 1.6 4km ENE of Round Valley, CA
- 2.5 4km NNW of West Bishop, CA
- 1.7 43 km E of Big Pine, California
- 1.7 8km ESE of Wilkerson, CA
- 1.8 18km WSW of Big Pine, CA
- 2.1 11km ENE of Big Pine, CA
- 1.5 2 km ENE of Bishop, California
- 1.6 7km NE of Wilkerson, CA
- 1.9 2km ENE of Round Valley, CA
- 1.8 4km ENE of Round Valley, CA
- 1.5 15km W of Round Valley, CA
- 2.3 22km WSW of Wilkerson, CA
- 1.7 6km NNE of Round Valley, CA
- 1.7 California-Nevada border region
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 4.8 on 2016-02-16 — it released about 19 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.