QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

12km S of Manton, CA

· 4.7 km deep · released about 24 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tehama County 36 kmShasta County 52 kmButte County 76 kmGlenn County 90 kmPlumas County 97 kmTrinity County 110 kmLassen 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 1.9 (md)
Depth
4.7 km below the surface
Felt
no reports yet
Nearest
Tehama County, 36 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1348 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 24 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 640,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 450,000× the energy of this one
  3. Around the size people start to feel M 3.0 40× the energy of this one
  4. This earthquake M 1.9 about 24 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 40.3082, -121.8887. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 36 km (22 mi) NE of here earthquakes near Tehama County
Shasta County, CA 52 km (32 mi) SSE of here earthquakes near Shasta County
Butte County, CA 76 km (47 mi) NNW of here earthquakes near Butte County
Glenn County, CA 90 km (56 mi) NNE of here earthquakes near Glenn County
Plumas County, CA 97 km (60 mi) WNW of here earthquakes near Plumas County
Trinity County, CA 110 km (69 mi) ESE of here earthquakes near Trinity County

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

Aftershocks so far

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

  1. 1.6 3 km WSW of Bella Vista, CA
  2. 1.7 18 km S of Mineral, CA
  3. 1.7 12 km SSW of Manton, CA
  4. 1.5 14 km NNE of Mineral, CA
  5. 1.9 4 km E of Redding, CA
  6. 2.3 13 km NNE of Red Bluff, CA
  7. 2.5 28 km SSW of Mineral, CA
  8. 2.4 14 km NNE of Red Bluff, CA
  9. 2.0 20 km S of Mineral, CA
  10. 1.5 4 km NE of Millville, CA
  11. 1.5 14 km NNE of Mineral, CA
  12. 1.9 13 km NNE of Shingletown, CA
  13. 2.2 13 km NNE of Shingletown, CA
  14. 1.6 14 km NNE of Shingletown, CA
  15. 3.1 13 km NNE of Shingletown, 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.