QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

13 km NNW of Chico, CA

· 28 km deep · released about 98 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Butte County 31 kmTehama County 43 kmGlenn County 53 kmYuba County 79 kmColusa County 81 kmPlumas County 91 kmSutter County 92 kmShasta County 102 kmLake County 111 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
28 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Butte County, 31 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 222 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

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 39.8515, -121.8800. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Butte County, CA 31 km (20 mi) NW of here earthquakes near Butte County
Tehama County, CA 43 km (27 mi) SE of here earthquakes near Tehama County
Glenn County, CA 53 km (33 mi) ENE of here earthquakes near Glenn County
Yuba County, CA 79 km (49 mi) NW of here earthquakes near Yuba County
Colusa County, CA 81 km (50 mi) NNE of here earthquakes near Colusa County
Plumas County, CA 91 km (57 mi) W of here earthquakes near Plumas County

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

Aftershocks so far

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

  1. 2.7 22 km SSW of Manton, CA
  2. 2.7 5 km W of Hamilton City, CA
  3. 1.9 16 km NE of Red Bluff, CA
  4. 2.5 9 km E of Rancho Tehama Reserve, CA
  5. 2.5 15 km S of Hamilton City, CA
  6. 2.2 4 km WSW of Hamilton City, CA
  7. 2.0 17 km E of Willows, CA
  8. 2.4 11 km NNE of Gerber, CA
  9. 1.9 19 km E of Willows, CA
  10. 2.3 18 km S of Mineral, CA
  11. 2.7 17 km NE of Red Bluff, CA
  12. 2.7 4 km WSW of Red Bluff, CA
  13. 1.9 15 km NE of Red Bluff, CA
  14. 1.7 16 km ENE of Red Bluff, CA
  15. 2.7 15 km ENE of Red Bluff, 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.