Earthquake · reviewed by a seismologist
M 2.9md
1km ESE of Round Valley, CA
- When
- Magnitude
- M 2.9 (md)
- Depth
- 12 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Mono County, 62 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1499 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.
How big was it?
This earthquake released about 650 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 23,000× the energy of this one
- Magna, Utah 2020 M 5.7 16,000× the energy of this one
- Around the size people start to feel M 3.0 1.5× the energy of this one
- This earthquake M 2.9 about 650 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 37.4108, -118.5875. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Mono County, CA | 62 km (38 mi) | SSE of here | earthquakes near Mono County |
| Esmeralda County, NV | 94 km (58 mi) | WSW of here | earthquakes near Esmeralda County |
| Madera County, CA | 105 km (65 mi) | ENE of here | earthquakes near Madera County |
| Mariposa County, CA | 118 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 | 141 km (88 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.
- 1.8 7km E of Mammoth Lakes, CA
- 2.8 0km SSW of Round Valley, CA
- 2.5 9km WSW of Round Valley, CA
- 1.6 9km E of Mammoth Lakes, CA
- 1.7 9km E of Mammoth Lakes, CA
- 1.7 10km WSW of Toms Place, CA
- 1.7 10km WSW of Toms Place, CA
- 1.6 3km NNW of West Bishop, CA
- 2.2 9km E of Mammoth Lakes, CA
- 1.9 9km E of Mammoth Lakes, CA
- 1.5 8km E of Mammoth Lakes, CA
- 1.5 10km E of Mammoth Lakes, CA
- 1.6 9km E of Mammoth Lakes, CA
- 1.9 9km E of Mammoth Lakes, CA
- 1.9 9km E 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 4.8 on 2016-02-16 — it released about 660 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.