Earthquake · reviewed by a seismologist
M 1.7md
16km WSW of Almanor, CA
- When
- Magnitude
- M 1.7 (md)
- Depth
- 1.4 km below the surface
- Felt
- no reports yet
- Nearest
- Plumas County, 50 km ESE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2647 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
- Magna, Utah 2020 M 5.7 930,000× the energy of this one
- Around the size people start to feel M 3.0 83× the energy of this one
- This earthquake M 1.7 about 11 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 40.1770, -121.3542. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Plumas County, CA | 50 km (31 mi) | WNW of here | earthquakes near Plumas County |
| Butte County, CA | 61 km (38 mi) | NNE of here | earthquakes near Butte County |
| Tehama County, CA | 75 km (47 mi) | E of here | earthquakes near Tehama County |
| Lassen County, CA | 86 km (54 mi) | SW of here | earthquakes near Lassen County |
| Shasta County, CA | 87 km (54 mi) | SE of here | earthquakes near Shasta County |
| Sierra County, CA | 97 km (61 mi) | NW of here | earthquakes near Sierra County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
51 earthquakes have been recorded within 50 km since this one.
- 1.6 12km ESE of Viola, CA
- 2.2 12km ESE of Viola, CA
- 2.0 14km NNE of Mineral, CA
- 1.6 4km NNE of Belden, CA
- 1.5 15km ENE of East Shore, CA
- 1.7 5km NE of Canyondam, CA
- 3.1 5km NE of East Quincy, CA
- 1.7 14km SW of Almanor, CA
- 1.6 3km SSW of East Shore, CA
- 1.5 4km NNW of Almanor, CA
- 2.3 4km N of Almanor, CA
- 1.8 3km NNE of Prattville, CA
- 2.1 9km NW of Caribou, CA
- 2.1 6km S of Bucks Lake, CA
- 1.8 15km WSW of Chester, 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.