Earthquake · reviewed by a seismologist
M 2.8md
9km SSE of Mammoth Lakes, CA
- When
- Magnitude
- M 2.8 (md)
- Depth
- 8.7 km below the surface
- Felt
- no reports yet
- Nearest
- Mono County, 39 km N
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1254 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
How big was it?
This earthquake released about 550 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 28,000× the energy of this one
- Magna, Utah 2020 M 5.7 19,000× the energy of this one
- Around the size people start to feel M 3.0 1.7× the energy of this one
- This earthquake M 2.8 about 550 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 37.5662, -118.9277. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Mono County, CA | 39 km (24 mi) | S of here | earthquakes near Mono County |
| Madera County, CA | 83 km (51 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 | 104 km (65 mi) | ESE of here | earthquakes near Tuolumne County |
| Fresno County, CA | 110 km (69 mi) | NE of here | earthquakes near Fresno County |
| Mineral County, NV | 115 km (71 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
56 earthquakes have been recorded within 50 km since this one.
- 1.6 9km WSW of Toms Place, CA
- 1.6 15km SE of Mammoth Lakes, CA
- 2.6 4km WNW of Mammoth Lakes, CA
- 1.7 13km W of Toms Place, CA
- 1.6 3km ENE of Round Valley, CA
- 2.2 42km SSW of Qualeys Camp, NV
- 2.2 10km SSW of Toms Place, CA
- 2.5 6km NW of Round Valley, CA
- 1.6 13km W of Toms Place, CA
- 1.6 12km SW of Toms Place, CA
- 1.6 12km W of Toms Place, CA
- 2.6 6km NW of Round Valley, CA
- 1.8 13km SE of Mammoth Lakes, CA
- 1.6 20km SW of Toms Place, CA
- 2.0 19km SW of Toms Place, 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 230 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.