Earthquake · reviewed by a seismologist
M 3.0md
19km W of Forest Ranch, CA
- When
- Magnitude
- M 3.0 (md)
- Depth
- 74 km below the surface
- Felt
- no reports yet
- Nearest
- Butte County, 37 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2942 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 830 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 410,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
- Magna, Utah 2020 M 5.7 13,000× the energy of this one
- This earthquake M 3.0 about 830 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 39.9082, -121.8955. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Butte County, CA | 37 km (23 mi) | NW of here | earthquakes near Butte County |
| Tehama County, CA | 38 km (23 mi) | SE of here | earthquakes near Tehama County |
| Glenn County, CA | 55 km (34 mi) | NE of here | earthquakes near Glenn County |
| Yuba County, CA | 85 km (53 mi) | NNW of here | earthquakes near Yuba County |
| Colusa County, CA | 86 km (54 mi) | NNE of here | earthquakes near Colusa County |
| Plumas County, CA | 92 km (57 mi) | W of here | earthquakes near Plumas County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
46 earthquakes have been recorded within 50 km since this one.
- 1.8 20km NE of Red Bluff, CA
- 2.6 10km ENE of Red Bluff, CA
- 2.0 18km ENE of Red Bluff, CA
- 1.9 10km N of Thermalito, CA
- 1.9 8km WNW of Durham, CA
- 1.9 6km W of Durham, CA
- 1.7 14km S of Hamilton City, CA
- 1.6 14km S of Hamilton City, CA
- 1.7 12km S of Hamilton City, CA
- 1.6 19km WNW of Belden, CA
- 1.8 6km N of Gerber, CA
- 2.6 6km N of Gerber, CA
- 2.7 4km N of Gerber, CA
- 1.8 6km E of Durham, CA
- 1.5 20km NE of Red Bluff, 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.