Earthquake · reviewed by a seismologist
M 1.8md
0km NNW of Round Valley, CA
- When
- Magnitude
- M 1.8 (md)
- Depth
- 9.0 km below the surface
- Felt
- no reports yet
- Nearest
- Mono County, 60 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1615 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 14 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 1,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 760,000× the energy of this one
- Around the size people start to feel M 3.0 68× the energy of this one
- This earthquake M 1.8 about 14 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 37.4180, -118.6000. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Mono County, CA | 60 km (38 mi) | SSE of here | earthquakes near Mono County |
| Esmeralda County, NV | 94 km (59 mi) | WSW of here | earthquakes near Esmeralda County |
| Madera County, CA | 104 km (65 mi) | ENE of here | earthquakes near Madera County |
| Mariposa County, CA | 117 km (73 mi) | E of here | earthquakes near Mariposa County |
| Fresno County, CA | 119 km (74 mi) | NE of here | earthquakes near Fresno County |
| Inyo County, CA | 143 km (89 mi) | NW of here | earthquakes near Inyo 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.
- 1.5 10km WSW of Toms Place, CA
- 2.2 1km NNE of Round Valley, CA
- 2.1 14km SW of Wilkerson, CA
- 1.6 14km SSW of Toms Place, CA
- 1.9 8km E of Mammoth Lakes, CA
- 2.1 8km E of Mammoth Lakes, CA
- 2.9 1km ESE of Round Valley, CA
- 1.9 7km E of Mammoth Lakes, CA
- 2.6 13km SE of Mammoth Lakes, CA
- 2.6 13km SE of Mammoth Lakes, CA
- 1.7 13km SE of Mammoth Lakes, CA
- 1.8 14km SE of Mammoth Lakes, CA
- 2.3 7km ENE of Round Valley, CA
- 2.1 11km NE of Big Pine, CA
- 1.5 3km NNE of Round Valley, 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 4.8 on 2016-02-16 — it released about 31,000 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.