QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

14km SE of Millville, CA

· 18 km deep · released about 26 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 34 kmTehama County 39 kmTrinity County 90 kmButte County 97 kmGlenn County 99 kmPlumas County 119 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 2.0 (md)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Shasta County, 34 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2809 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 26 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 580,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 410,000× the energy of this one
  3. Around the size people start to feel M 3.0 36× the energy of this one
  4. This earthquake M 2.0 about 26 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 40.4582, -122.0818. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 34 km (21 mi) S of here earthquakes near Shasta County
Tehama County, CA 39 km (24 mi) NNE of here earthquakes near Tehama County
Trinity County, CA 90 km (56 mi) ESE of here earthquakes near Trinity County
Butte County, CA 97 km (60 mi) NNW of here earthquakes near Butte County
Glenn County, CA 99 km (61 mi) NNE of here earthquakes near Glenn County
Plumas County, CA 119 km (74 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

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

  1. 1.6 3km SW of Shasta Lake, CA
  2. 1.8 20km NE of Red Bluff, CA
  3. 1.6 17km NNW of Shingletown, CA
  4. 2.0 20km NE of Red Bluff, CA
  5. 1.8 20km NE of Red Bluff, CA
  6. 2.6 10km ENE of Red Bluff, CA
  7. 2.0 18km ENE of Red Bluff, CA
  8. 1.8 9km NNE of Shasta Lake, CA
  9. 1.8 18km NW of Viola, CA
  10. 1.8 17km NNE of Bella Vista, CA
  11. 1.6 18km NW of Viola, CA
  12. 1.8 18km NW of Viola, CA
  13. 1.6 18km NW of Viola, CA
  14. 2.2 18km NNE of Shingletown, CA
  15. 1.5 18km NW of Viola, 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.