Earthquake · reviewed by a seismologist
M 1.8md
8km SW of South Yuba City, CA
- When
- Magnitude
- M 1.8 (md)
- Depth
- 14 km below the surface
- Felt
- no reports yet
- Nearest
- Sutter County, 3 km S
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3070 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 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 900,000× the energy of this one
- Magna, Utah 2020 M 5.7 640,000× the energy of this one
- Around the size people start to feel M 3.0 57× the energy of this one
- This earthquake M 1.8 about 17 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 39.0662, -121.6967. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Sutter County, CA | 3 km (2 mi) | N of here | earthquakes near Sutter County |
| Yuba County, CA | 38 km (24 mi) | SW of here | earthquakes near Yuba County |
| Yolo County, CA | 47 km (29 mi) | NNE of here | earthquakes near Yolo County |
| Colusa County, CA | 48 km (30 mi) | ESE of here | earthquakes near Colusa County |
| Butte County, CA | 67 km (42 mi) | S of here | earthquakes near Butte County |
| Sacramento County, CA | 75 km (47 mi) | NNW of here | earthquakes near Sacramento County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
35 earthquakes have been recorded within 50 km since this one.
- 2.3 13 km NNE of Rio Linda, CA
- 2.8 11 km WSW of Lincoln, CA
- 2.2 13 km WSW of Lincoln, CA
- 2.1 12 km NW of Roseville, CA
- 1.8 11 km SW of Lincoln, CA
- 2.2 12 km WSW of Lincoln, CA
- 2.0 6km SW of Arbuckle, CA
- 2.2 8km N of West Sacramento, CA
- 4.2 5km S of Oroville East, CA
- 2.1 3km SSW of Dunnigan, CA
- 1.9 6km SW of Arbuckle, CA
- 1.9 5km N of Lake Wildwood, CA
- 2.5 8km NW of Dunnigan, CA
- 1.5 8km WSW of Williams, CA
- 3.2 7km WSW of Williams, 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.