Earthquake · reviewed by a seismologist
M 2.4md
9 km S of Hamilton City, CA
- When
- Magnitude
- M 2.4 (md)
- Depth
- 28 km below the surface
- Felt
- no reports yet
- Nearest
- Glenn County, 33 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 172 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 100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 140,000× the energy of this one
- Magna, Utah 2020 M 5.7 100,000× the energy of this one
- Around the size people start to feel M 3.0 9.1× the energy of this one
- This earthquake M 2.4 about 100 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 39.6613, -122.0275. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Glenn County, CA | 33 km (20 mi) | ENE of here | earthquakes near Glenn County |
| Butte County, CA | 36 km (23 mi) | W of here | earthquakes near Butte County |
| Tehama County, CA | 55 km (34 mi) | SSE of here | earthquakes near Tehama County |
| Colusa County, CA | 57 km (35 mi) | NNE of here | earthquakes near Colusa County |
| Yuba County, CA | 73 km (45 mi) | NW of here | earthquakes near Yuba County |
| Sutter County, CA | 75 km (47 mi) | NNW of here | earthquakes near Sutter County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
7 earthquakes have been recorded within 50 km since this one.
- 2.7 5 km W of Hamilton City, CA
- 2.5 9 km E of Rancho Tehama Reserve, CA
- 2.5 15 km S of Hamilton City, CA
- 2.2 4 km WSW of Hamilton City, CA
- 2.0 17 km E of Willows, CA
- 2.2 21 km NE of Alder Springs, CA
- 1.9 19 km E of Willows, 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.