Earthquake · automatic estimate, may change
M 3.0md
15 km N of Pittsburg, CA
- When
- Magnitude
- M 3.0 (md)
- Depth
- 20 km below the surface
- Felt
- 15 reports · strongest reported intensity III
- Nearest
- Solano County, 13 km NNW
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 159 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 800 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 6.7 420,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 19,000× the energy of this one
- Magna, Utah 2020 M 5.7 13,000× the energy of this one
- This earthquake M 3.0 about 800 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 38.1595, -121.8888. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Solano County, CA | 13 km (8 mi) | SSE of here | earthquakes near Solano County |
| Contra Costa County, CA | 27 km (17 mi) | NNE of here | earthquakes near Contra Costa County |
| Napa County, CA | 54 km (34 mi) | SE of here | earthquakes near Napa County |
| Alameda County, CA | 57 km (35 mi) | N of here | earthquakes near Alameda County |
| Sacramento County, CA | 57 km (36 mi) | SW of here | earthquakes near Sacramento County |
| Yolo County, CA | 58 km (36 mi) | S of here | earthquakes near Yolo County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
60 earthquakes have been recorded within 50 km since this one.
- 1.6 4 km ESE of San Ramon, CA
- 1.9 5 km SE of San Ramon, CA
- 1.6 4 km ESE of San Ramon, CA
- 2.3 5 km N of Dublin, CA
- 1.8 5 km N of Dublin, CA
- 1.7 5 km SE of San Ramon, CA
- 1.6 5 km SE of San Ramon, CA
- 2.5 4 km ESE of San Ramon, CA
- 2.5 4 km ESE of San Ramon, CA
- 2.2 4 km ESE of San Ramon, CA
- 1.6 4 km ESE of San Ramon, CA
- 2.2 4 km SE of San Ramon, CA
- 1.9 5 km ESE of San Ramon, CA
- 2.8 4 km ESE of San Ramon, CA
- 2.6 5 km SE of San Ramon, 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 4.5 on 2019-10-15 — it released about 180 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.