Earthquake · reviewed by a seismologist
M 1.6md
7km ENE of Kenwood, CA
- When
- Magnitude
- M 1.6 (md)
- Depth
- 7.1 km below the surface
- Felt
- no reports yet
- Nearest
- Napa County, 15 km ENE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1755 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 7.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
- Around the size people start to feel M 3.0 130× the energy of this one
- This earthquake M 1.6 about 7.3 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 38.4362, -122.4683. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Napa County, CA | 15 km (9 mi) | WSW of here | earthquakes near Napa County |
| Sonoma County, CA | 41 km (26 mi) | ESE of here | earthquakes near Sonoma County |
| Marin County, CA | 49 km (31 mi) | NNE of here | earthquakes near Marin County |
| Solano County, CA | 50 km (31 mi) | WNW of here | earthquakes near Solano County |
| Yolo County, CA | 56 km (35 mi) | WSW of here | earthquakes near Yolo County |
| Contra Costa County, CA | 73 km (45 mi) | NW of here | earthquakes near Contra Costa County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
34 earthquakes have been recorded within 50 km since this one.
- 1.7 3km NNE of The Geysers, CA
- 2.2 3km SW of Anderson Springs, CA
- 1.6 4km WNW of The Geysers, CA
- 1.7 1km N of The Geysers, CA
- 1.6 1km NW of The Geysers, CA
- 1.5 1km NNW of The Geysers, CA
- 1.6 1km NW of The Geysers, CA
- 2.0 0km NE of The Geysers, CA
- 1.6 6km E of Vallejo, CA
- 1.7 3km W of Anderson Springs, CA
- 1.6 3km E of The Geysers, CA
- 1.9 6km E of Vallejo, CA
- 1.7 1km NE of The Geysers, CA
- 1.9 7km WSW of The Geysers, CA
- 1.6 3km NW of The Geysers, 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 4.2 on 2018-01-18 — it released about 8,800 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.