Earthquake · reviewed by a seismologist
M 2.3md
20km SW of New Idria, CA
- When
- Magnitude
- M 2.3 (md)
- Depth
- 10 km below the surface
- Felt
- no reports yet
- Nearest
- San Benito County, 39 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1875 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 77 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
- Magna, Utah 2020 M 5.7 140,000× the energy of this one
- Around the size people start to feel M 3.0 12× the energy of this one
- This earthquake M 2.3 about 77 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 36.3115, -120.8518. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| San Benito County, CA | 39 km (24 mi) | SSE of here | earthquakes near San Benito County |
| Monterey County, CA | 42 km (26 mi) | E of here | earthquakes near Monterey County |
| Kings County, CA | 97 km (60 mi) | WNW of here | earthquakes near Kings County |
| Merced County, CA | 99 km (61 mi) | S of here | earthquakes near Merced County |
| San Luis Obispo County, CA | 109 km (68 mi) | NNW of here | earthquakes near San Luis Obispo County |
| Fresno County, CA | 118 km (73 mi) | WSW of here | earthquakes near Fresno County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
52 earthquakes have been recorded within 50 km since this one.
- 2.1 22km NE of San Lucas, CA
- 1.8 13km SE of Pinnacles, CA
- 2.0 7km NNW of Pinnacles, CA
- 2.8 23km NW of Parkfield, CA
- 1.8 8km ESE of Pinnacles, CA
- 3.8 15km SSE of New Idria, CA
- 2.0 8km N of Pinnacles, CA
- 2.1 7km NNW of Pinnacles, CA
- 1.7 23km WSW of New Idria, CA
- 1.6 7km NNW of Pinnacles, CA
- 1.5 8km NNW of Pinnacles, CA
- 2.1 9km SE of Pinnacles, CA
- 4.0 6km NW of Pinnacles, CA
- 1.7 4km N of Pinnacles, CA
- 1.8 8km NW of Pinnacles, 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 4.6 on 2017-11-13 — 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.