QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

20km SE of Burney, CA

· 3.4 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 44 kmLassen County 76 kmTehama County 91 kmPlumas County 102 kmModoc County 117 kmButte 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 1.8 (md)
Depth
3.4 km below the surface
Felt
no reports yet
Nearest
Shasta County, 44 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2575 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 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 40.7360, -121.5217. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 44 km (27 mi) E of here earthquakes near Shasta County
Lassen County, CA 76 km (47 mi) W of here earthquakes near Lassen County
Tehama County, CA 91 km (56 mi) NE of here earthquakes near Tehama County
Plumas County, CA 102 km (63 mi) NW of here earthquakes near Plumas County
Modoc County, CA 117 km (72 mi) SW of here earthquakes near Modoc County
Butte County, CA 119 km (74 mi) N of here earthquakes near Butte County

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

Aftershocks so far

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

  1. 1.9 8km NW of Chester, CA
  2. 2.2 9km NW of Chester, CA
  3. 1.9 9km NW of Chester, CA
  4. 2.0 10km N of Viola, CA
  5. 1.5 10km N of Viola, CA
  6. 1.8 12km NNE of Shingletown, CA
  7. 2.0 10km N of Viola, CA
  8. 2.1 10km N of Viola, CA
  9. 2.8 10km N of Viola, CA
  10. 2.0 10km N of Viola, CA
  11. 1.9 12km ENE of Mineral, CA
  12. 1.5 12km N of Mineral, CA
  13. 1.6 7km S of Mineral, CA
  14. 1.5 5km WSW of Manton, CA
  15. 2.3 10km NNW of Viola, 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.