QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

6km SSE of Elmira, CA

· 20 km deep · released about 260 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Solano County 7 kmYolo County 42 kmContra Costa County 43 kmNapa County 46 kmSacramento County 49 kmSan Joaquin County 66 kmAlameda County 73 kmMarin County 81 kmSutter County 83 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 2.6 (md)
Depth
20 km below the surface
Felt
no reports yet
Nearest
Solano County, 7 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2930 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 260 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 59,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 42,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.7× the energy of this one
  4. This earthquake M 2.6 about 260 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 38.2985, -121.8750. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Solano County, CA 7 km (4 mi) ENE of here earthquakes near Solano County
Yolo County, CA 42 km (26 mi) S of here earthquakes near Yolo County
Contra Costa County, CA 43 km (27 mi) N of here earthquakes near Contra Costa County
Napa County, CA 46 km (28 mi) ESE of here earthquakes near Napa County
Sacramento County, CA 49 km (31 mi) WSW of here earthquakes near Sacramento County
San Joaquin County, CA 66 km (41 mi) NW of here earthquakes near San Joaquin 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. 2.3 2km SSE of Concord, CA
  2. 1.6 5km SW of Pacheco, CA
  3. 2.4 1km N of Vine Hill, CA
  4. 2.0 1km NNE of Pacheco, CA
  5. 2.0 12km NE of Napa, CA
  6. 2.0 10km ENE of Blackhawk, CA
  7. 1.9 10km ENE of Blackhawk, CA
  8. 2.2 10km ENE of Blackhawk, CA
  9. 3.7 6km SSW of Yountville, CA
  10. 2.1 1km N of Pacheco, CA
  11. 2.0 1km N of Pacheco, CA
  12. 1.8 13km E of Yountville, CA
  13. 1.5 1km N of Vine Hill, CA
  14. 2.0 2km W of Green Valley, CA
  15. 2.1 1km N of Vine Hill, 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.