QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

17 km NE of Red Bluff, CA

· 13 km deep · released about 380 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tehama County 21 kmShasta County 54 kmButte County 79 kmGlenn County 80 kmTrinity County 97 kmPlumas 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 2.7 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Tehama County, 21 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 27 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 380 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 40,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 29,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.5× the energy of this one
  4. This earthquake M 2.7 about 380 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 40.2745, -122.0732. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 21 km (13 mi) NE of here earthquakes near Tehama County
Shasta County, CA 54 km (34 mi) S of here earthquakes near Shasta County
Butte County, CA 79 km (49 mi) NNW of here earthquakes near Butte County
Glenn County, CA 80 km (50 mi) NNE of here earthquakes near Glenn County
Trinity County, CA 97 km (61 mi) ESE of here earthquakes near Trinity County
Plumas County, CA 111 km (69 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

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

  1. 2.7 22 km SSW of Manton, CA
  2. 1.7 9 km ENE of Shingletown, CA
  3. 1.9 4 km ESE of Bella Vista, CA
  4. 1.9 16 km NE of Red Bluff, CA
  5. 2.5 9 km E of Rancho Tehama Reserve, CA
  6. 2.7 4 km SSE of Anderson, CA
  7. 1.8 13 km SW of Manton, CA
  8. 1.7 17 km NE of Red Bluff, CA
  9. 2.6 16 km NNE of Red Bluff, CA
  10. 1.8 16 km NNE of Shingletown, CA
  11. 2.0 13 km SW of Manton, CA
  12. 1.8 11 km SW of Manton, CA
  13. 1.8 12 km SW of Manton, CA
  14. 2.7 10 km SW of Manton, CA
  15. 1.6 12 km SW of Manton, 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.