Earthquake · reviewed by a seismologist
M 1.8md
12km WNW of Mineral, CA
- When
- Magnitude
- M 1.8 (md)
- Depth
- 5.7 km below the surface
- Felt
- no reports yet
- Nearest
- Shasta County, 51 km NW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2945 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 17 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 5.8 870,000× the energy of this one
- Magna, Utah 2020 M 5.7 620,000× the energy of this one
- Around the size people start to feel M 3.0 55× the energy of this one
- This earthquake M 1.8 about 17 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 40.3795, -121.7058. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Shasta County, CA | 51 km (32 mi) | SE of here | earthquakes near Shasta County |
| Tehama County, CA | 53 km (33 mi) | ENE of here | earthquakes near Tehama County |
| Butte County, CA | 80 km (50 mi) | N of here | earthquakes near Butte County |
| Plumas County, CA | 86 km (54 mi) | WNW of here | earthquakes near Plumas County |
| Lassen County, CA | 99 km (61 mi) | WSW of here | earthquakes near Lassen County |
| Glenn County, CA | 105 km (65 mi) | NE of here | earthquakes near Glenn County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
58 earthquakes have been recorded within 50 km since this one.
- 1.7 3km NNW of Millville, CA
- 2.1 18km NW of Viola, CA
- 1.6 4km NNE of Millville, CA
- 1.8 6km NNE of Millville, CA
- 1.7 16km WSW of Almanor, CA
- 1.6 19km WNW of Belden, CA
- 1.5 13km NNE of Mineral, CA
- 1.8 6km N of Gerber, CA
- 2.6 6km N of Gerber, CA
- 1.6 18km WSW of Almanor, CA
- 2.7 4km N of Gerber, CA
- 1.7 6km SE of Viola, CA
- 1.6 1km WSW of Almanor, CA
- 2.1 4km SW of Millville, CA
- 1.9 2km SW of Millville, 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.
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.