QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

7km SSW of Williams, CA

· 18 km deep · released about 110 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Colusa County 9 kmSutter County 43 kmLake County 48 kmYolo County 53 kmGlenn County 58 kmNapa County 67 kmYuba County 75 kmButte County 80 kmSonoma County 90 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 2.4 (md)
Depth
18 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Colusa County, 9 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1511 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 110 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 140,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 99,000× the energy of this one
  3. Around the size people start to feel M 3.0 8.8× the energy of this one
  4. This earthquake M 2.4 about 110 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 39.1025, -122.1922. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Colusa County, CA 9 km (6 mi) SSE of here earthquakes near Colusa County
Sutter County, CA 43 km (27 mi) W of here earthquakes near Sutter County
Lake County, CA 48 km (30 mi) E of here earthquakes near Lake County
Yolo County, CA 53 km (33 mi) NNW of here earthquakes near Yolo County
Glenn County, CA 58 km (36 mi) SSE of here earthquakes near Glenn County
Napa County, CA 67 km (42 mi) N of here earthquakes near Napa County

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

Aftershocks so far

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

  1. 1.5 9km E of Clearlake Oaks, CA
  2. 1.9 8km E of Clearlake Oaks, CA
  3. 1.8 9km W of Williams, CA
  4. 1.8 11km ESE of Hidden Valley Lake, CA
  5. 1.5 9km ENE of Lower Lake, CA
  6. 1.6 7km WSW of Clearlake, CA
  7. 1.5 7km WSW of Clearlake, CA
  8. 1.7 8km ENE of Lower Lake, CA
  9. 2.1 10km ESE of Hidden Valley Lake, CA
  10. 1.8 14km N of Colusa, CA
  11. 1.6 12km SE of Willows, CA
  12. 2.2 16km N of Colusa, CA
  13. 1.6 14km ESE of Hidden Valley Lake, CA
  14. 2.1 11km ENE of Hidden Valley Lake, CA
  15. 1.7 14km ENE of Hidden Valley Lake, 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.