QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

6km WNW of Davis, CA

· 7.7 km deep · released about 35 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yolo County 16 kmSolano County 34 kmSacramento County 42 kmNapa County 46 kmSutter County 54 kmContra Costa County 72 kmColusa County 79 kmSan Joaquin County 83 kmYuba County 89 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
7.7 km below the surface
Felt
no reports yet
Nearest
Yolo County, 16 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1444 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 35 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 5.8 440,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 310,000× the energy of this one
  3. Around the size people start to feel M 3.0 28× the energy of this one
  4. This earthquake M 2.0 about 35 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 38.5563, -121.8045. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yolo County, CA 16 km (10 mi) SSE of here earthquakes near Yolo County
Solano County, CA 34 km (21 mi) NNE of here earthquakes near Solano County
Sacramento County, CA 42 km (26 mi) WNW of here earthquakes near Sacramento County
Napa County, CA 46 km (28 mi) E of here earthquakes near Napa County
Sutter County, CA 54 km (34 mi) S of here earthquakes near Sutter County
Contra Costa County, CA 72 km (45 mi) N of here earthquakes near Contra Costa County

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

Aftershocks so far

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

  1. 2.5 12 km WSW of Lincoln, CA
  2. 2.3 13 km NNE of Rio Linda, CA
  3. 1.6 16 km NE of Napa, CA
  4. 2.8 11 km WSW of Lincoln, CA
  5. 2.2 13 km WSW of Lincoln, CA
  6. 2.1 12 km NW of Roseville, CA
  7. 1.6 14 km NNE of Napa, CA
  8. 1.8 11 km SW of Lincoln, CA
  9. 2.2 12 km WSW of Lincoln, CA
  10. 1.6 11 km E of Yountville, CA
  11. 1.6 14 km E of Angwin, CA
  12. 1.7 13 km NNE of Yountville, CA
  13. 2.0 3 km SSE of Vacaville, CA
  14. 1.6 12 km ENE of Yountville, CA
  15. 2.5 4 km SSE of Rio Vista, 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.