Earthquake · reviewed by a seismologist
M 2.1md
13km S of Mammoth Lakes, CA
- When
- Magnitude
- M 2.1 (md)
- Depth
- 3.7 km below the surface
- Felt
- no reports yet
- Nearest
- Mono County, 45 km NNE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2309 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 44 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 340,000× the energy of this one
- Magna, Utah 2020 M 5.7 240,000× the energy of this one
- Around the size people start to feel M 3.0 22× the energy of this one
- This earthquake M 2.1 about 44 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 37.5203, -118.9943. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Mono County, CA | 45 km (28 mi) | SSW of here | earthquakes near Mono County |
| Madera County, CA | 75 km (47 mi) | ENE of here | earthquakes near Madera County |
| Mariposa County, CA | 81 km (50 mi) | E of here | earthquakes near Mariposa County |
| Tuolumne County, CA | 102 km (63 mi) | ESE of here | earthquakes near Tuolumne County |
| Fresno County, CA | 103 km (64 mi) | NE of here | earthquakes near Fresno County |
| Mineral County, NV | 122 km (76 mi) | SSW of here | earthquakes near Mineral County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
59 earthquakes have been recorded within 50 km since this one.
- 1.5 3km E of Mammoth Lakes, CA
- 1.7 15km SE of Mammoth Lakes, CA
- 1.5 22km ESE of Yosemite Valley, CA
- 1.5 22km ESE of Yosemite Valley, CA
- 1.6 9km E of Mammoth Lakes, CA
- 1.7 9km SSW of Mammoth Lakes, CA
- 1.6 4km E of Mammoth Lakes, CA
- 1.6 16km SE of Yosemite Valley, CA
- 2.0 17km WSW of Toms Place, CA
- 1.6 8km E of Mammoth Lakes, CA
- 1.6 5 km ENE of Mammoth Lakes, California
- 2.2 15km SW of Toms Place, CA
- 1.6 13km WSW of Toms Place, CA
- 1.7 9km E of Mammoth Lakes, CA
- 1.8 15km SE of Mammoth Lakes, 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 2020-02-01 — it released about 2,800 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.