Earthquake · reviewed by a seismologist
M 2.8md
7km NW of Montgomery Creek, CA
- When
- Magnitude
- M 2.8 (md)
- Depth
- 19 km below the surface
- Felt
- 6 reports · strongest reported intensity III
- Nearest
- Shasta County, 15 km SSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2783 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 6 people have reported feeling it to USGS.
How big was it?
This earthquake released about 430 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 35,000× the energy of this one
- Magna, Utah 2020 M 5.7 25,000× the energy of this one
- Around the size people start to feel M 3.0 2.2× the energy of this one
- This earthquake M 2.8 about 430 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 40.8897, -121.9777. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Shasta County, CA | 15 km (10 mi) | NNE of here | earthquakes near Shasta County |
| Tehama County, CA | 88 km (54 mi) | NNE of here | earthquakes near Tehama County |
| Siskiyou County, CA | 90 km (56 mi) | SSE of here | earthquakes near Siskiyou County |
| Trinity County, CA | 99 km (62 mi) | ENE of here | earthquakes near Trinity County |
| Lassen County, CA | 116 km (72 mi) | W of here | earthquakes near Lassen County |
| Modoc County, CA | 131 km (81 mi) | SW of here | earthquakes near Modoc County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
56 earthquakes have been recorded within 50 km since this one.
- 2.0 21km SE of Burney, CA
- 1.5 9km SE of Dunsmuir, CA
- 1.8 22km SE of Burney, CA
- 1.8 5km N of McCloud, CA
- 1.8 24km SE of Burney, CA
- 1.6 22km SE of Burney, CA
- 1.9 22km SE of Burney, CA
- 2.4 22km SE of Burney, CA
- 1.6 22km SE of Burney, CA
- 1.7 21km SE of Burney, CA
- 1.6 22km SE of Burney, CA
- 3.0 21km SE of Burney, CA
- 2.4 21km SE of Burney, CA
- 1.9 22km SE of Burney, CA
- 2.0 8km WSW of Dunsmuir, 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.