QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

9km ENE of Gerber, CA

· 19 km deep · released about 1,800 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tehama County 15 kmButte County 62 kmGlenn County 63 kmShasta County 73 kmColusa County 104 kmPlumas County 106 kmTrinity County 108 kmYuba 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 3.2 (ml)
Depth
19 km below the surface
Felt
194 reports · strongest reported intensity IV
Nearest
Tehama County, 15 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3128 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 194 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,800 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 190,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 8,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,000× the energy of this one
  4. This earthquake M 3.2 about 1,800 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.9× more

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 40.1033, -122.0580. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 15 km (9 mi) E of here earthquakes near Tehama County
Butte County, CA 62 km (39 mi) NW of here earthquakes near Butte County
Glenn County, CA 63 km (39 mi) NNE of here earthquakes near Glenn County
Shasta County, CA 73 km (45 mi) S of here earthquakes near Shasta County
Colusa County, CA 104 km (65 mi) N of here earthquakes near Colusa County
Plumas County, CA 106 km (66 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

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

  1. 1.8 6km ESE of Red Bluff, CA
  2. 1.6 15km S of Mineral, CA
  3. 1.6 7km WSW of Manton, CA
  4. 1.8 12km W of Manton, CA
  5. 1.5 12km SE of Millville, CA
  6. 1.7 13km W of Manton, CA
  7. 2.0 8km ESE of Red Bluff, CA
  8. 2.2 10km NE of Orland, CA
  9. 1.7 15km WSW of Shingletown, CA
  10. 1.7 11km W of Manton, CA
  11. 1.6 7km SSE of Mineral, CA
  12. 1.5 7km SSE of Mineral, CA
  13. 1.8 12km WNW of Mineral, CA
  14. 2.9 8km S of Mineral, CA
  15. 1.6 20km S of Mineral, 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.