Earthquake · reviewed by a seismologist
M 2.0md
20km W of Westley, CA
- When
- Magnitude
- M 2.0 (md)
- Depth
- 3.4 km below the surface
- Felt
- 2 reports · strongest reported intensity II
- Nearest
- Stanislaus County, 37 km E
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 3183 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 2 people have reported feeling it to USGS.
How big was it?
This earthquake released about 35 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 440,000× the energy of this one
- Magna, Utah 2020 M 5.7 310,000× the energy of this one
- Around the size people start to feel M 3.0 28× the energy of this one
- This earthquake M 2.0 about 35 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 37.5352, -121.4257. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Stanislaus County, CA | 37 km (23 mi) | W of here | earthquakes near Stanislaus County |
| Santa Clara County, CA | 42 km (26 mi) | NNE of here | earthquakes near Santa Clara County |
| Alameda County, CA | 45 km (28 mi) | ESE of here | earthquakes near Alameda County |
| San Joaquin County, CA | 46 km (29 mi) | SSW of here | earthquakes near San Joaquin County |
| Contra Costa County, CA | 63 km (39 mi) | SE of here | earthquakes near Contra Costa County |
| Merced County, CA | 73 km (45 mi) | WNW of here | earthquakes near Merced County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
40 earthquakes have been recorded within 50 km since this one.
- 1.5 9km ENE of Milpitas, CA
- 3.0 16km E of Seven Trees, CA
- 2.3 9km ENE of San Martin, CA
- 2.0 15km N of Morgan Hill, CA
- 3.1 14km N of Morgan Hill, CA
- 1.9 13km SE of Livermore, CA
- 1.6 8km E of Alum Rock, CA
- 1.9 9km NNE of Alum Rock, CA
- 1.5 13km SE of Livermore, CA
- 1.8 13km SE of Livermore, CA
- 2.3 14km N of Morgan Hill, CA
- 1.7 9km NE of Milpitas, CA
- 1.5 7km NE of Alum Rock, CA
- 2.3 14km SSW of Westley, CA
- 1.6 14km SSW of Westley, 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 4.1 on 2017-10-10 — it released about 1,200 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.