Earthquake · reviewed by a seismologist
M 3.0md
5km S of Shandon, CA
- When
- Magnitude
- M 3.0 (md)
- Depth
- 5.7 km below the surface
- Felt
- 7 reports · strongest reported intensity III
- Nearest
- San Luis Obispo County, 26 km SSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2098 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 7 people have reported feeling it to USGS.
How big was it?
This earthquake released about 890 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 380,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 17,000× the energy of this one
- Magna, Utah 2020 M 5.7 12,000× the energy of this one
- This earthquake M 3.0 about 890 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 35.6135, -120.3743. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| San Luis Obispo County, CA | 26 km (16 mi) | NNE of here | earthquakes near San Luis Obispo County |
| Kings County, CA | 72 km (45 mi) | SW of here | earthquakes near Kings County |
| Monterey County, CA | 110 km (68 mi) | SE of here | earthquakes near Monterey County |
| Santa Barbara County, CA | 124 km (77 mi) | NNW of here | earthquakes near Santa Barbara County |
| San Benito County, CA | 128 km (80 mi) | SSE of here | earthquakes near San Benito County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
42 earthquakes have been recorded within 50 km since this one.
- 1.5 19km NW of Parkfield, CA
- 1.5 7km NNW of Cholame, CA
- 2.0 12km NW of Parkfield, CA
- 2.7 12km NW of Parkfield, CA
- 2.3 17km NW of Parkfield, CA
- 1.6 16km NW of Parkfield, CA
- 1.7 6km E of Atascadero, CA
- 1.5 17km NW of Parkfield, CA
- 1.9 16km NW of Parkfield, CA
- 1.7 16km NW of Parkfield, CA
- 2.0 14km NW of Parkfield, CA
- 2.7 13km WSW of Parkfield, CA
- 1.7 6km E of Atascadero, CA
- 1.7 18km NW of Parkfield, CA
- 2.6 18km NW of Parkfield, 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 4.3 on 2019-12-17 — it released about 92 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.