QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

10km WNW of Laguna West-Lakeside, CA

· 15 km deep · released about 24 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sacramento County 21 kmSolano County 37 kmYolo County 38 kmSan Joaquin County 63 kmNapa County 65 kmSutter County 66 kmContra Costa County 67 kmAmador County 81 kmAlameda County 94 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 1.9 (md)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Sacramento County, 21 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1590 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.

  1. Mineral, Virginia 2011 M 5.8 640,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 450,000× the energy of this one
  3. Around the size people start to feel M 3.0 40× the energy of this one
  4. 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 38.4467, -121.5807. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sacramento County, CA 21 km (13 mi) W of here earthquakes near Sacramento County
Solano County, CA 37 km (23 mi) ENE of here earthquakes near Solano County
Yolo County, CA 38 km (24 mi) SE of here earthquakes near Yolo County
San Joaquin County, CA 63 km (39 mi) NNW of here earthquakes near San Joaquin County
Napa County, CA 65 km (41 mi) E of here earthquakes near Napa County
Sutter County, CA 66 km (41 mi) S of here earthquakes near Sutter County

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

Aftershocks so far

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

  1. 1.8 9 km W of Rio Vista, CA
  2. 1.6 12 km SE of Suisun City, CA
  3. 2.0 14 km NNE of Pittsburg, CA
  4. 1.8 11 km SSE of Suisun City, CA
  5. 2.0 11 km SSE of Suisun City, CA
  6. 1.6 11 km SSE of Suisun City, CA
  7. 2.0 11 km SSE of Suisun City, CA
  8. 1.7 11 km SSE of Suisun City, CA
  9. 2.6 11 km SSE of Suisun City, CA
  10. 1.6 11 km SSE of Suisun City, CA
  11. 3.1 11 km SSE of Suisun City, CA
  12. 1.6 9 km S of Elmira, CA
  13. 1.9 11 km NNE of Bay Point, CA
  14. 2.4 11 km of Pittsburg, CA
  15. 1.6 8 km NNE of Bay Point, 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

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