Earthquake · reviewed by a seismologist
M 2.8md
2km ENE of Prattville, CA
- When
- Magnitude
- M 2.8 (md)
- Depth
- 5.7 km below the surface
- Felt
- 10 reports · strongest reported intensity III
- Nearest
- Plumas County, 36 km SE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1676 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 510 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 30,000× the energy of this one
- Magna, Utah 2020 M 5.7 21,000× the energy of this one
- Around the size people start to feel M 3.0 1.9× the energy of this one
- This earthquake M 2.8 about 510 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 40.2195, -121.1318. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Plumas County, CA | 36 km (23 mi) | NW of here | earthquakes near Plumas County |
| Lassen County, CA | 70 km (44 mi) | SW of here | earthquakes near Lassen County |
| Butte County, CA | 74 km (46 mi) | NNE of here | earthquakes near Butte County |
| Sierra County, CA | 88 km (55 mi) | NW of here | earthquakes near Sierra County |
| Tehama County, CA | 94 km (58 mi) | E of here | earthquakes near Tehama County |
| Shasta County, CA | 98 km (61 mi) | SE of here | earthquakes near Shasta County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 1.7 21km S of Mineral, CA
- 1.7 22km SSE of Mineral, CA
- 2.1 12km N of Mineral, CA
- 1.5 12km ESE of Viola, CA
- 2.5 11km N of Mineral, CA
- 1.6 14km NNW of Chester, CA
- 1.6 4km N of Canyondam, CA
- 1.7 11km WNW of Chester, CA
- 1.9 17km S of Mineral, CA
- 2.1 4km SE of Meadow Valley, CA
- 2.3 5km ENE of East Quincy, CA
- 2.1 10km WNW of Chester, CA
- 1.9 14km NNE of Mineral, CA
- 1.6 2km ESE of Chester, CA
- 1.7 5km WNW of Hamilton Branch, 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.