Earthquake · reviewed by a seismologist
M 1.9md
23km NE of San Ardo, CA
- When
- Magnitude
- M 1.9 (md)
- Depth
- 7.3 km below the surface
- Felt
- no reports yet
- Nearest
- Monterey County, 50 km W
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1500 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 24 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 640,000× the energy of this one
- Magna, Utah 2020 M 5.7 450,000× the energy of this one
- Around the size people start to feel M 3.0 40× the energy of this one
- This earthquake M 1.9 about 24 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 36.1915, -120.7592. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Monterey County, CA | 50 km (31 mi) | E of here | earthquakes near Monterey County |
| San Benito County, CA | 55 km (34 mi) | SSE of here | earthquakes near San Benito County |
| Kings County, CA | 86 km (53 mi) | W of here | earthquakes near Kings County |
| San Luis Obispo County, CA | 94 km (58 mi) | NNW of here | earthquakes near San Luis Obispo County |
| Merced County, CA | 112 km (69 mi) | S of here | earthquakes near Merced County |
| Fresno County, CA | 117 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
24 earthquakes have been recorded within 50 km since this one.
- 2.2 4km ENE of Pinnacles, CA
- 1.5 13km SE of Pinnacles, CA
- 1.7 23km WSW of New Idria, CA
- 2.6 12km NE of Bradley, CA
- 1.6 6km N of Parkfield, CA
- 1.8 11km NE of Bradley, CA
- 1.6 11km SE of Pinnacles, CA
- 4.0 5km ENE of Pinnacles, CA
- 2.0 11km SE of Pinnacles, CA
- 1.8 21km W of New Idria, CA
- 1.6 18km NW of Parkfield, CA
- 1.7 8km NE of New Idria, CA
- 1.6 12km SE of Pinnacles, CA
- 1.7 10km SE of Pinnacles, CA
- 1.9 10km 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.