QuakeIndex

Earthquake · automatic estimate, may change

M 2.0md

9 km ESE of Livermore, CA

· 10 km deep · released about 26 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alameda County 20 kmContra Costa County 39 kmSanta Clara County 47 kmSan Joaquin County 49 kmStanislaus County 60 kmSan Mateo County 66 kmSolano County 73 kmSanta Cruz County 76 kmSacramento County 95 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 2.0 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Alameda County, 20 km W
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 6 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 26 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 580,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 410,000× the energy of this one
  3. Around the size people start to feel M 3.0 36× the energy of this one
  4. This earthquake M 2.0 about 26 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 37.6402, -121.6813. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Alameda County, CA 20 km (13 mi) E of here earthquakes near Alameda County
Contra Costa County, CA 39 km (24 mi) SE of here earthquakes near Contra Costa County
Santa Clara County, CA 47 km (29 mi) N of here earthquakes near Santa Clara County
San Joaquin County, CA 49 km (30 mi) SW of here earthquakes near San Joaquin County
Stanislaus County, CA 60 km (38 mi) W of here earthquakes near Stanislaus County
San Mateo County, CA 66 km (41 mi) ENE of here earthquakes near San Mateo County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

11 earthquakes have been recorded within 50 km since this one.

  1. 1.6 3 km SW of San Ramon, CA
  2. 1.1 8 km SSE of Sunol, CA
  3. 1.2 8 km SSE of Sunol, CA
  4. 1.7 12 km SE of Livermore, CA
  5. 1.4 12 km SE of Livermore, CA
  6. 1.1 2 km NE of Danville, CA
  7. 1.4 12 km SE of Livermore, CA
  8. 1.1 13 km SE of Livermore, CA
  9. 0.9 20 km NE of Alum Rock, CA
  10. 1.4 4 km NNW of San Leandro, CA
  11. 1.5 8 km E of Alum Rock, 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 5.1 on 2022-10-25 — it released about 45,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.