QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

8 km E of Cottonwood, California

· 16 km deep · released about 860 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tehama County 28 kmShasta County 45 kmTrinity County 85 kmGlenn County 88 kmButte County 93 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 3.0 (ml)
Depth
16 km below the surface
Felt
34 reports · strongest reported intensity III
Nearest
Tehama County, 28 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3232 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 34 people have reported feeling it to USGS.

How big was it?

This earthquake released about 860 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 390,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
  4. This earthquake M 3.0 about 860 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 40.3718, -122.1770. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 28 km (17 mi) N of here earthquakes near Tehama County
Shasta County, CA 45 km (28 mi) SSW of here earthquakes near Shasta County
Trinity County, CA 85 km (53 mi) ESE of here earthquakes near Trinity County
Glenn County, CA 88 km (54 mi) NNE of here earthquakes near Glenn County
Butte County, CA 93 km (57 mi) NNW of here earthquakes near Butte County
Plumas County, CA 122 km (76 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

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

  1. 1.6 12km WSW of Shingletown, CA
  2. 1.6 9km SW of Shingletown, CA
  3. 1.8 1km WSW of Palo Cedro, CA
  4. 1.8 1km SW of Palo Cedro, CA
  5. 1.5 3km NW of Palo Cedro, CA
  6. 2.5 6km ENE of Redding, CA
  7. 1.5 1km WNW of Palo Cedro, CA
  8. 1.5 2km W of Palo Cedro, CA
  9. 2.4 1km SW of Palo Cedro, CA
  10. 1.7 18km NE of Red Bluff, CA
  11. 1.5 19km NNE of Red Bluff, CA
  12. 1.7 8km SE of French Gulch, CA
  13. 2.2 2km E of Shasta Lake, CA
  14. 1.5 20km SE of Anderson, CA
  15. 1.5 3km E of Millville, 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.