QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

8 km WNW of Princeton, California

· 27 km deep · released about 100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Colusa County 31 kmGlenn County 32 kmButte County 50 kmSutter County 56 kmLake County 66 kmYuba County 67 kmTehama County 78 kmYolo County 85 kmNapa County 105 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
27 km below the surface
Felt
no reports yet
Nearest
Colusa County, 31 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3433 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 100 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 5.7 100,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.1× the energy of this one
  4. This earthquake M 2.4 about 100 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 39.4322, -122.1002. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Colusa County, CA 31 km (19 mi) NNE of here earthquakes near Colusa County
Glenn County, CA 32 km (20 mi) SE of here earthquakes near Glenn County
Butte County, CA 50 km (31 mi) WSW of here earthquakes near Butte County
Sutter County, CA 56 km (35 mi) NW of here earthquakes near Sutter County
Lake County, CA 66 km (41 mi) ENE of here earthquakes near Lake County
Yuba County, CA 67 km (42 mi) WNW of here earthquakes near Yuba 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. 2.2 10km NE of Orland, CA
  2. 1.8 11km N of Oroville, CA
  3. 1.7 10km N of Thermalito, CA
  4. 1.9 18km E of Willows, CA
  5. 2.8 5km N of Chico, CA
  6. 2.6 20km ENE of Clearlake Oaks, CA
  7. 1.6 11km SE of Willows, CA
  8. 1.9 10km N of Oroville, CA
  9. 1.9 6km NNE of Hamilton City, CA
  10. 1.9 17km ENE of Willows, CA
  11. 2.1 10km N of Thermalito, CA
  12. 2.0 19km WSW of Williams, CA
  13. 1.8 12km S of Hamilton City, CA
  14. 1.7 17km ENE of Willows, CA
  15. 1.9 16km S of Hamilton City, 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.