QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

16 km ESE of Willows, CA

· 26 km deep · released about 98 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Glenn County 35 kmButte County 39 kmColusa County 41 kmSutter County 58 kmYuba County 63 kmTehama County 72 kmLake County 77 kmYolo County 92 kmNevada County 109 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 2.3 (md)
Depth
26 km below the surface
Felt
no reports yet
Nearest
Glenn County, 35 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 441 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 98 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.8× the energy of this one
  4. This earthquake M 2.3 about 98 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 39.5047, -122.0112. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Glenn County, CA 35 km (22 mi) ESE of here earthquakes near Glenn County
Butte County, CA 39 km (24 mi) WSW of here earthquakes near Butte County
Colusa County, CA 41 km (26 mi) NNE of here earthquakes near Colusa County
Sutter County, CA 58 km (36 mi) NNW of here earthquakes near Sutter County
Yuba County, CA 63 km (39 mi) WNW of here earthquakes near Yuba County
Tehama County, CA 72 km (45 mi) SSE of here earthquakes near Tehama County

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

Aftershocks so far

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

  1. 2.0 5 km E of Williams, CA
  2. 2.7 5 km W of Hamilton City, CA
  3. 1.9 7 km ESE of Williams, CA
  4. 2.5 15 km S of Hamilton City, CA
  5. 2.2 4 km WSW of Hamilton City, CA
  6. 2.0 17 km E of Willows, CA
  7. 1.9 19 km E of Willows, CA
  8. 2.4 9 km S of Hamilton City, CA
  9. 1.9 5 km WSW of Concow, CA
  10. 3.1 9 km ENE of Colusa, CA
  11. 3.2 15 km E of Willows, CA
  12. 2.1 16 km ESE of Willows, CA
  13. 2.3 13 km NNW of Chico, CA
  14. 2.8 12 km SSE of Willows, CA
  15. 2.2 3 km SE 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.2 on 2022-07-23 — it released about 710 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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