Earthquake · reviewed by a seismologist
M 1.6md
20km NE of Red Bluff, CA
- When
- Magnitude
- M 1.6 (md)
- Depth
- 1.4 km below the surface
- Felt
- no reports yet
- Nearest
- Tehama County, 24 km SW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2545 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 9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
- Around the size people start to feel M 3.0 110× the energy of this one
- This earthquake M 1.6 about 9 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 40.3008, -122.0680. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Tehama County, CA | 24 km (15 mi) | NE of here | earthquakes near Tehama County |
| Shasta County, CA | 51 km (32 mi) | S of here | earthquakes near Shasta County |
| Butte County, CA | 81 km (50 mi) | NNW of here | earthquakes near Butte County |
| Glenn County, CA | 83 km (51 mi) | NNE of here | earthquakes near Glenn County |
| Trinity County, CA | 97 km (60 mi) | ESE of here | earthquakes near Trinity County |
| Plumas County, CA | 111 km (69 mi) | WNW of here | earthquakes near Plumas County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
49 earthquakes have been recorded within 50 km since this one.
- 1.7 3km WSW of Shasta Lake, CA
- 2.2 6km SE of Corning, CA
- 1.5 5km WSW of Manton, CA
- 2.3 6km SE of Corning, CA
- 2.3 10km NNW of Viola, CA
- 1.6 2km WSW of Shasta Lake, CA
- 1.6 15km ESE of Anderson, CA
- 1.8 11km NW of Shingletown, CA
- 1.6 4km NNW of Palo Cedro, CA
- 2.1 6km NE of Gerber, CA
- 1.6 12km ESE of Viola, CA
- 2.2 12km ESE of Viola, CA
- 1.7 16km NNW of Shingletown, CA
- 1.6 16km NNW of Shingletown, CA
- 1.8 11km NW of Viola, 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.