Earthquake · reviewed by a seismologist
M 4.0mw
4 km ESE of Mammoth Lakes, California
- When
- Magnitude
- M 4.0 (mw)
- Depth
- 6.1 km below the surface
- Felt
- 85 reports · strongest reported intensity IV
- Measured shaking
- intensity IV (ShakeMap)
- USGS impact alert
- green
- Nearest
- Mono County, 31 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1741 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 85 people have reported feeling it to USGS.
How big was it?
This earthquake released about 15 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.0 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 12,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 520× the energy of this one
- Magna, Utah 2020 M 5.7 370× the energy of this one
- This earthquake M 4.0 about 15 tons of TNT
- Around the size people start to feel M 3.0 this one released 31× 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 37.6382, -118.9252. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Mono County, CA | 31 km (19 mi) | S of here | earthquakes near Mono County |
| Madera County, CA | 87 km (54 mi) | ENE of here | earthquakes near Madera County |
| Mariposa County, CA | 87 km (54 mi) | E of here | earthquakes near Mariposa County |
| Tuolumne County, CA | 101 km (63 mi) | ESE of here | earthquakes near Tuolumne County |
| Mineral County, NV | 107 km (67 mi) | SSW of here | earthquakes near Mineral County |
| Esmeralda County, NV | 115 km (71 mi) | W of here | earthquakes near Esmeralda County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
60 earthquakes have been recorded within 50 km since this one.
- 1.6 3 km ESE of Mammoth Lakes, California
- 2.8 3 km ESE of Mammoth Lakes, California
- 3.0 3 km ESE of Mammoth Lakes, California
- 1.6 6 km E of Mammoth Lakes, California
- 1.7 3 km ESE of Mammoth Lakes, California
- 2.1 3 km ESE of Mammoth Lakes, California
- 1.8 2 km ESE of Mammoth Lakes, California
- 1.8 2 km ESE of Mammoth Lakes, California
- 1.9 2 km ESE of Mammoth Lakes, California
- 2.3 2 km ESE of Mammoth Lakes, California
- 1.6 3 km SE of Mammoth Lakes, California
- 1.7 2 km ESE of Mammoth Lakes, California
- 1.7 2 km ESE of Mammoth Lakes, California
- 1.8 2 km ESE of Mammoth Lakes, California
- 1.6 3 km ESE of Mammoth Lakes, California
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.
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.