Earthquake · reviewed by a seismologist
M 2.3md
13km WSW of Williams, CA
- When
- Magnitude
- M 2.3 (md)
- Depth
- 0.1 km below the surface
- Felt
- no reports yet
- Nearest
- Colusa County, 7 km NE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1175 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 77 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
- Magna, Utah 2020 M 5.7 140,000× the energy of this one
- Around the size people start to feel M 3.0 12× the energy of this one
- This earthquake M 2.3 about 77 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 39.1305, -122.2918. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Colusa County, CA | 7 km (4 mi) | SW of here | earthquakes near Colusa County |
| Lake County, CA | 39 km (24 mi) | E of here | earthquakes near Lake County |
| Sutter County, CA | 52 km (32 mi) | WNW of here | earthquakes near Sutter County |
| Glenn County, CA | 53 km (33 mi) | S of here | earthquakes near Glenn County |
| Yolo County, CA | 60 km (38 mi) | NW of here | earthquakes near Yolo County |
| Napa County, CA | 69 km (43 mi) | N of here | earthquakes near Napa County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
6 earthquakes have been recorded within 50 km since this one.
- 1.5 15 km ENE of Clearlake, CA
- 1.6 17 km ESE of Lake Pillsbury, CA
- 1.8 9 km E of Hidden Valley Lake, CA
- 1.8 13 km ESE of Hidden Valley Lake, CA
- 2.0 14 km ENE of Hidden Valley Lake, CA
- 2.1 12km W 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.
For this area
The largest earthquake within 50 km in our catalogue was M 5.1 on 2016-08-10 — it released about 17,000 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
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.