Earthquake · reviewed by a seismologist
M 2.7md
13km WSW of Parkfield, CA
- When
- Magnitude
- M 2.7 (md)
- Depth
- 8.8 km below the surface
- Felt
- 15 reports · strongest reported intensity IV
- Nearest
- San Luis Obispo County, 50 km S
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1983 days ago
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 15 people have reported feeling it to USGS.
How big was it?
This earthquake released about 390 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 39,000× the energy of this one
- Magna, Utah 2020 M 5.7 28,000× the energy of this one
- Around the size people start to feel M 3.0 2.5× the energy of this one
- This earthquake M 2.7 about 390 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 35.8337, -120.5562. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| San Luis Obispo County, CA | 50 km (31 mi) | N of here | earthquakes near San Luis Obispo County |
| Kings County, CA | 72 km (45 mi) | WSW of here | earthquakes near Kings County |
| Monterey County, CA | 82 km (51 mi) | ESE of here | earthquakes near Monterey County |
| San Benito County, CA | 99 km (61 mi) | SSE of here | earthquakes near San Benito County |
| Fresno County, CA | 131 km (81 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
54 earthquakes have been recorded within 50 km since this one.
- 2.0 12km NW of Parkfield, CA
- 2.1 8km E of San Ardo, CA
- 3.6 11km WSW of Huron, CA
- 2.1 6km SW of San Ardo, CA
- 1.5 3km ENE of Coalinga, CA
- 2.5 22km ENE of San Ardo, CA
- 2.0 22km ENE of San Ardo, CA
- 2.6 8km NE of Coalinga, CA
- 1.8 6km SW of San Ardo, CA
- 1.7 13km NNW of Avenal, CA
- 1.6 13km W of San Ardo, CA
- 2.8 12km NW of Parkfield, CA
- 1.6 9km NW of Avenal, CA
- 2.5 7km NW of Avenal, CA
- 1.6 9km NNW of Avenal, 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 210 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.