Earthquake · reviewed by a seismologist
M 2.2md
6km W of Temelec, CA
- When
- Magnitude
- M 2.2 (md)
- Depth
- 1.1 km below the surface
- Felt
- 4 reports · strongest reported intensity III
- Nearest
- Marin County, 29 km SW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3187 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 4 people have reported feeling it to USGS.
How big was it?
This earthquake released about 56 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 270,000× the energy of this one
- Magna, Utah 2020 M 5.7 190,000× the energy of this one
- Around the size people start to feel M 3.0 17× the energy of this one
- This earthquake M 2.2 about 56 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 38.2705, -122.5600. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Marin County, CA | 29 km (18 mi) | NNE of here | earthquakes near Marin County |
| Napa County, CA | 33 km (21 mi) | SW of here | earthquakes near Napa County |
| Sonoma County, CA | 43 km (27 mi) | SE of here | earthquakes near Sonoma County |
| Solano County, CA | 54 km (34 mi) | W of here | earthquakes near Solano County |
| Contra Costa County, CA | 66 km (41 mi) | NW of here | earthquakes near Contra Costa County |
| Yolo County, CA | 73 km (45 mi) | SW of here | earthquakes near Yolo County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
44 earthquakes have been recorded within 50 km since this one.
- 1.7 4km ENE of Graton, CA
- 2.2 11km NE of Napa, CA
- 1.9 10km ESE of Black Point-Green Point, CA
- 3.7 10km ESE of Black Point-Green Point, CA
- 2.3 3km NNW of Larkfield-Wikiup, CA
- 1.5 2km NNW of Larkfield-Wikiup, CA
- 2.5 3km NNW of Larkfield-Wikiup, CA
- 2.0 13km ESE of Angwin, CA
- 1.6 6km W of Yountville, CA
- 1.9 7km ENE of Angwin, CA
- 2.8 11km S of The Geysers, CA
- 1.8 4km NE of Angwin, CA
- 1.7 7km ENE of Penngrove, CA
- 2.0 6km NNE of Penngrove, CA
- 2.9 6km NNE of Penngrove, 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.