QuakeIndex

Earthquake · automatic estimate, may change

M 2.3md

11 km ENE of Red Bluff, CA

· 22 km deep · released about 98 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tehama County 14 kmShasta County 61 kmGlenn County 72 kmButte County 75 kmTrinity County 97 kmPlumas County 113 kmColusa County 116 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
22 km below the surface
Felt
no reports yet
Nearest
Tehama County, 14 km SW
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 342 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 40.2148, -122.1212. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 14 km (8 mi) NE of here earthquakes near Tehama County
Shasta County, CA 61 km (38 mi) S of here earthquakes near Shasta County
Glenn County, CA 72 km (45 mi) NNE of here earthquakes near Glenn County
Butte County, CA 75 km (47 mi) NW of here earthquakes near Butte County
Trinity County, CA 97 km (60 mi) ESE of here earthquakes near Trinity County
Plumas County, CA 113 km (70 mi) WNW of here earthquakes near Plumas County

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

Aftershocks so far

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

  1. 2.7 22 km SSW of Manton, CA
  2. 1.7 9 km ENE of Shingletown, CA
  3. 1.9 4 km ESE of Bella Vista, CA
  4. 1.9 16 km NE of Red Bluff, CA
  5. 2.5 9 km E of Rancho Tehama Reserve, CA
  6. 2.7 4 km SSE of Anderson, CA
  7. 1.8 13 km SW of Manton, CA
  8. 1.7 17 km NE of Red Bluff, CA
  9. 2.6 16 km NNE of Red Bluff, CA
  10. 2.0 13 km SW of Manton, CA
  11. 1.8 11 km SW of Manton, CA
  12. 1.8 12 km SW of Manton, CA
  13. 2.7 10 km SW of Manton, CA
  14. 1.6 12 km SW of Manton, CA
  15. 2.4 11 km NNE of Gerber, 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.