Earthquake · reviewed by a seismologist
M 1.7md
2km E of Berkeley, CA
- When
- Magnitude
- M 1.7 (md)
- Depth
- 8.6 km below the surface
- Felt
- no reports yet
- Nearest
- Contra Costa County, 27 km ENE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2091 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 89× the energy of this one
- This earthquake M 1.7 about 11 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 37.8720, -122.2542. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Contra Costa County, CA | 27 km (17 mi) | W of here | earthquakes near Contra Costa County |
| Alameda County, CA | 39 km (24 mi) | NW of here | earthquakes near Alameda County |
| Marin County, CA | 48 km (30 mi) | ESE of here | earthquakes near Marin County |
| Solano County, CA | 52 km (32 mi) | SSW of here | earthquakes near Solano County |
| San Mateo County, CA | 52 km (32 mi) | NNE of here | earthquakes near San Mateo County |
| San Francisco County, CA | 70 km (44 mi) | ENE of here | earthquakes near San Francisco County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
43 earthquakes have been recorded within 50 km since this one.
- 1.6 6km ESE of Santa Venetia, CA
- 1.8 1km SW of East Richmond Heights, CA
- 2.4 0km W of Pleasant Hill, CA
- 2.1 4km WSW of Pleasanton, CA
- 2.7 10km WNW of American Canyon, CA
- 1.6 2km E of Vallejo, CA
- 1.9 3km ESE of Berkeley, CA
- 1.6 6km ESE of Fairview, CA
- 1.6 3km WSW of Blackhawk, CA
- 1.6 2km N of San Ramon, CA
- 2.3 2km SE of Danville, CA
- 1.8 2km ESE of Berkeley, CA
- 2.6 1km ENE of Union City, CA
- 2.2 3km SW of Green Valley, CA
- 1.6 8km ESE of Fremont, 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 4.5 on 2019-10-15 — it released about 14,000 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.