Earthquake · reviewed by a seismologist
M 2.5md
22km NE of San Ardo, CA
- When
- Magnitude
- M 2.5 (md)
- Depth
- 8.5 km below the surface
- Felt
- 2 reports · strongest reported intensity III
- Nearest
- Monterey County, 53 km W
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1387 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 140 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 110,000× the energy of this one
- Magna, Utah 2020 M 5.7 75,000× the energy of this one
- Around the size people start to feel M 3.0 6.7× the energy of this one
- This earthquake M 2.5 about 140 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 36.1603, -120.7385. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Monterey County, CA | 53 km (33 mi) | E of here | earthquakes near Monterey County |
| San Benito County, CA | 59 km (37 mi) | SSE of here | earthquakes near San Benito County |
| Kings County, CA | 83 km (52 mi) | W of here | earthquakes near Kings County |
| San Luis Obispo County, CA | 90 km (56 mi) | NNW of here | earthquakes near San Luis Obispo County |
| Merced County, CA | 115 km (71 mi) | S of here | earthquakes near Merced County |
| Fresno County, CA | 118 km (73 mi) | SW of here | earthquakes near Fresno County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
37 earthquakes have been recorded within 50 km since this one.
- 2.1 15km NE of San Ardo, CA
- 1.8 22km NE of San Lucas, CA
- 2.2 23km SE of Pinnacles, CA
- 1.6 18km WNW of New Idria, CA
- 1.7 11km SE of Pinnacles, CA
- 1.5 14km SE of Pinnacles, CA
- 1.9 19km NW of Parkfield, CA
- 1.7 12km SE of Pinnacles, CA
- 1.8 5km SSW of San Ardo, CA
- 1.7 14km NW of Parkfield, CA
- 2.2 15km NW of Coalinga, CA
- 1.9 11km SE of Pinnacles, CA
- 1.7 19km S of New Idria, CA
- 1.5 11km SE of Pinnacles, CA
- 1.8 8km SE 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.
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.