QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

12km NNE of Shingletown, CA

· 5.8 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 26 kmTehama County 62 kmLassen County 103 kmButte County 105 kmPlumas County 108 kmTrinity County 109 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
5.8 km below the surface
Felt
no reports yet
Nearest
Shasta County, 26 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2067 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 16 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 5.8 970,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 680,000× the energy of this one
  3. Around the size people start to feel M 3.0 61× the energy of this one
  4. This earthquake M 1.8 about 16 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 40.5900, -121.8268. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 26 km (16 mi) SE of here earthquakes near Shasta County
Tehama County, CA 62 km (39 mi) NNE of here earthquakes near Tehama County
Lassen County, CA 103 km (64 mi) W of here earthquakes near Lassen County
Butte County, CA 105 km (65 mi) N of here earthquakes near Butte County
Plumas County, CA 108 km (67 mi) NW of here earthquakes near Plumas County
Trinity County, CA 109 km (68 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

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

  1. 1.8 5km SSE of Mineral, CA
  2. 2.0 18km ESE of Anderson, CA
  3. 1.7 4km SSE of Mineral, CA
  4. 1.6 10km WSW of Round Mountain, CA
  5. 1.5 15km ENE of Mineral, CA
  6. 1.6 14km NNE of Mineral, CA
  7. 1.5 14km N of Shingletown, CA
  8. 1.6 2km E of Palo Cedro, CA
  9. 1.5 6km NNE of Millville, CA
  10. 2.1 12km NNE of Shasta Lake, CA
  11. 1.8 9km NE of Shasta Lake, CA
  12. 1.6 5km N of Millville, CA
  13. 1.9 20km NE of Red Bluff, CA
  14. 2.0 18km WNW of Round Mountain, CA
  15. 1.6 9km E of Millville, 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.