QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

12 km NE of Shingletown, CA

· 14 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 28 kmTehama County 62 kmLassen County 101 kmButte County 103 kmPlumas County 106 kmTrinity 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 1.8 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Shasta County, 28 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 754 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 14 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 790,000× the energy of this one
  3. Around the size people start to feel M 3.0 70× the energy of this one
  4. This earthquake M 1.8 about 14 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 40.5822, -121.8083. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 28 km (17 mi) SE of here earthquakes near Shasta County
Tehama County, CA 62 km (39 mi) NE of here earthquakes near Tehama County
Lassen County, CA 101 km (63 mi) W of here earthquakes near Lassen County
Butte County, CA 103 km (64 mi) N of here earthquakes near Butte County
Plumas County, CA 106 km (66 mi) NW of here earthquakes near Plumas County
Trinity County, CA 111 km (69 mi) E of here earthquakes near Trinity County

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

Aftershocks so far

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

  1. 1.7 12 km W of Mineral, CA
  2. 1.8 12 km W of Mineral, CA
  3. 2.7 12 km E of Red Bluff, CA
  4. 1.7 30 km SW of Mineral, CA
  5. 2.6 15 km WNW of Round Mountain, CA
  6. 1.6 13 km NNE of Shingletown, CA
  7. 2.8 13 km NE of Shingletown, CA
  8. 3.3 13 km NNE of Shingletown, CA
  9. 2.5 9 km SSE of Mineral, CA
  10. 1.9 10 km NNW of Chester, CA
  11. 1.6 6 km SE of Mineral, CA
  12. 1.8 5 km ESE of Redding, CA
  13. 2.0 9 km NE of Shasta Lake, CA
  14. 1.5 3 km ESE of Shasta Lake, CA
  15. 1.7 15 km ENE of Red Bluff, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.0 on 2023-09-08 — it released about 68,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.