QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

9km NNE of Burney, CA

· 13 km deep · released about 41 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 41 kmLassen County 90 kmSiskiyou County 102 kmModoc County 104 kmTehama County 106 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 2.1 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Shasta County, 41 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1985 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 41 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 370,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 260,000× the energy of this one
  3. Around the size people start to feel M 3.0 23× the energy of this one
  4. This earthquake M 2.1 about 41 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 40.9623, -121.6338. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 41 km (26 mi) ENE of here earthquakes near Shasta County
Lassen County, CA 90 km (56 mi) WNW of here earthquakes near Lassen County
Siskiyou County, CA 102 km (64 mi) SE of here earthquakes near Siskiyou County
Modoc County, CA 104 km (64 mi) SW of here earthquakes near Modoc County
Tehama County, CA 106 km (66 mi) NNE of here earthquakes near Tehama County
Plumas County, CA 128 km (79 mi) NNW of here earthquakes near Plumas County

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

Aftershocks so far

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

  1. 1.8 4km NNE of Viola, CA
  2. 2.8 11km N of McArthur, CA
  3. 2.4 14km NNE of Shingletown, CA
  4. 1.6 9km NE of Shingletown, CA
  5. 1.9 8km N of Viola, CA
  6. 1.6 8km N of Viola, CA
  7. 1.8 16km W of Round Mountain, CA
  8. 1.5 12km W of Round Mountain, CA
  9. 2.1 14km E of Big Bend, CA
  10. 1.6 10km WNW of Montgomery Creek, CA
  11. 2.3 26km SE of Fall River Mills, CA
  12. 1.7 13km W of Round Mountain, CA
  13. 1.9 13km ENE of Viola, CA
  14. 1.6 15km W of Round Mountain, CA
  15. 2.2 21km NE 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.