QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

10 km ESE of Red Bluff, CA

· 27 km deep · released about 310 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tehama County 10 kmGlenn County 66 kmShasta County 67 kmButte County 70 kmTrinity County 101 kmColusa County 110 kmPlumas County 111 kmYuba 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 2.7 (md)
Depth
27 km below the surface
Felt
2 reports · strongest reported intensity I
Nearest
Tehama County, 10 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 832 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 310 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 50,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 35,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.1× the energy of this one
  4. This earthquake M 2.7 about 310 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 40.1585, -122.1167. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 10 km (7 mi) ENE of here earthquakes near Tehama County
Glenn County, CA 66 km (41 mi) NNE of here earthquakes near Glenn County
Shasta County, CA 67 km (42 mi) S of here earthquakes near Shasta County
Butte County, CA 70 km (44 mi) NW of here earthquakes near Butte County
Trinity County, CA 101 km (62 mi) ESE of here earthquakes near Trinity County
Colusa County, CA 110 km (68 mi) N of here earthquakes near Colusa County

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

Aftershocks so far

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

  1. 1.9 16 km SSE of Anderson, CA
  2. 1.7 9 km N of Shingletown, CA
  3. 2.2 5 km ESE of Hamilton City, CA
  4. 2.7 7 km NNE of Hamilton City, CA
  5. 1.9 6 km WNW of Manton, CA
  6. 2.4 6 km NNE of Hamilton City, CA
  7. 2.2 6 km NNE of Hamilton City, CA
  8. 2.4 7 km ESE of Red Bluff, CA
  9. 2.6 6 km ESE of Red Bluff, CA
  10. 2.3 9 km E of Los Molinos, CA
  11. 1.7 12 km W of Mineral, CA
  12. 1.8 12 km W of Mineral, CA
  13. 2.7 12 km E of Red Bluff, CA
  14. 1.7 30 km SW of Mineral, CA
  15. 1.8 5 km ESE of Redding, 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.