Earthquake · reviewed by a seismologist
M 2.7md
19 km SW of Old Station, California
- When
- Magnitude
- M 2.7 (md)
- Depth
- 3.7 km below the surface
- Felt
- 10 reports · strongest reported intensity III
- Nearest
- Shasta County, 47 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3321 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 10 people have reported feeling it to USGS.
How big was it?
This earthquake released about 330 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 46,000× the energy of this one
- Magna, Utah 2020 M 5.7 33,000× the energy of this one
- Around the size people start to feel M 3.0 2.9× the energy of this one
- This earthquake M 2.7 about 330 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 40.5347, -121.5767. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Shasta County, CA | 47 km (29 mi) | ESE of here | earthquakes near Shasta County |
| Tehama County, CA | 72 km (45 mi) | NE of here | earthquakes near Tehama County |
| Lassen County, CA | 83 km (52 mi) | WSW of here | earthquakes near Lassen County |
| Plumas County, CA | 88 km (55 mi) | NW of here | earthquakes near Plumas County |
| Butte County, CA | 97 km (60 mi) | N of here | earthquakes near Butte County |
| Glenn County, CA | 125 km (78 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
39 earthquakes have been recorded within 50 km since this one.
- 2.9 13km NNE of Mineral, CA
- 1.8 13km NNE of Mineral, CA
- 2.2 12km ESE of Viola, CA
- 2.8 12km NNE of Mineral, CA
- 1.8 12km NNE of Mineral, CA
- 2.6 13km NNE of Mineral, CA
- 1.7 8km NE of Burney, CA
- 2.2 10km NE of Burney, CA
- 1.8 3km SE of Chester, CA
- 3.4 3km SE of Chester, CA
- 1.8 19km ESE of Anderson, CA
- 2.3 5km ESE of Chester, CA
- 1.6 17km ESE of Anderson, CA
- 1.6 12km NNE of Mineral, CA
- 2.1 13km SE of Mineral, 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.