QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

16km NNW of Shingletown, CA

· 15 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 17 kmTehama County 62 kmTrinity County 99 kmLassen County 111 kmButte County 112 kmSiskiyou County 117 kmPlumas County 118 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
15 km below the surface
Felt
no reports yet
Nearest
Shasta County, 17 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2028 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 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× 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 40.6358, -121.9368. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 17 km (10 mi) SSE of here earthquakes near Shasta County
Tehama County, CA 62 km (38 mi) NNE of here earthquakes near Tehama County
Trinity County, CA 99 km (62 mi) E of here earthquakes near Trinity County
Lassen County, CA 111 km (69 mi) W of here earthquakes near Lassen County
Butte County, CA 112 km (69 mi) NNW of here earthquakes near Butte County
Siskiyou County, CA 117 km (73 mi) SSE of here earthquakes near Siskiyou 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. 1.6 1km SW of Palo Cedro, CA
  2. 1.7 2km WSW of Palo Cedro, CA
  3. 1.6 2km W of Palo Cedro, CA
  4. 1.5 6km ESE of Bella Vista, CA
  5. 1.6 10km NNE of Mineral, CA
  6. 1.6 11km NNE of Mineral, CA
  7. 1.7 11km NNE of Mineral, CA
  8. 1.5 10km NNE of Mineral, CA
  9. 1.9 10km NNE of Mineral, CA
  10. 1.9 11km NNE of Mineral, CA
  11. 1.6 14km NE of Mineral, CA
  12. 1.6 8km NE of Shasta Lake, CA
  13. 1.8 5km SSE of Mineral, CA
  14. 2.0 18km ESE of Anderson, CA
  15. 1.7 4km SSE 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.