Earthquake · reviewed by a seismologist
M 2.1md
4km WNW of Los Banos, CA
- When
- Magnitude
- M 2.1 (md)
- Depth
- 5.8 km below the surface
- Felt
- no reports yet
- Nearest
- Merced County, 20 km NE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1208 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 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
- Magna, Utah 2020 M 5.7 250,000× the energy of this one
- Around the size people start to feel M 3.0 22× the energy of this one
- This earthquake M 2.1 about 43 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 37.0665, -120.8878. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Merced County, CA | 20 km (13 mi) | SW of here | earthquakes near Merced County |
| San Benito County, CA | 54 km (33 mi) | NNE of here | earthquakes near San Benito County |
| Stanislaus County, CA | 56 km (35 mi) | S of here | earthquakes near Stanislaus County |
| Santa Clara County, CA | 73 km (45 mi) | ESE of here | earthquakes near Santa Clara County |
| Monterey County, CA | 99 km (62 mi) | NNE of here | earthquakes near Monterey County |
| Santa Cruz County, CA | 100 km (62 mi) | E of here | earthquakes near Santa Cruz County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
11 earthquakes have been recorded within 50 km since this one.
- 1.7 5 km SE of Tres Pinos, CA
- 1.6 10 km NNE of Hollister, CA
- 1.5 1 km ESE of Tres Pinos, CA
- 1.8 11km NNW of Hollister, CA
- 1.6 1km ESE of Tres Pinos, CA
- 1.6 19km SW of Gustine, CA
- 1.8 9km ENE of Hollister, CA
- 2.1 19km SW of Gustine, CA
- 1.8 18km SSW of South Dos Palos, CA
- 1.6 20km SW of Gustine, CA
- 2.0 3km WNW of Los Banos, 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 4.4 on 2023-04-04 — it released about 2,900 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.