QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

34km ESE of McArthur, CA

· 14 km deep · released about 32 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lassen County 42 kmModoc County 82 kmShasta County 85 kmPlumas County 103 kmWashoe 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 2.0 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Lassen County, 42 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3010 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 32 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 470,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 330,000× the energy of this one
  3. Around the size people start to feel M 3.0 30× the energy of this one
  4. This earthquake M 2.0 about 32 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 40.9023, -121.0500. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lassen County, CA 42 km (26 mi) WNW of here earthquakes near Lassen County
Modoc County, CA 82 km (51 mi) SSW of here earthquakes near Modoc County
Shasta County, CA 85 km (53 mi) E of here earthquakes near Shasta County
Plumas County, CA 103 km (64 mi) N of here earthquakes near Plumas County
Washoe County, NV 118 km (73 mi) W of here earthquakes near Washoe County
Tehama County, CA 132 km (82 mi) NE of here earthquakes near Tehama County

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

Aftershocks so far

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

  1. 1.9 23km ESE of McArthur, CA
  2. 1.7 12km W of Fall River Mills, CA
  3. 2.5 48km NNW of Susanville, CA
  4. 2.0 2km SW of McArthur, CA
  5. 1.6 25km NNE of Hamilton Branch, CA
  6. 1.8 33km NNW of Susanville, CA
  7. 1.9 2km NNE of Fall River Mills, CA
  8. 1.6 22km NE of Viola, CA
  9. 1.6 30km NNE of Hamilton Branch, CA
  10. 1.8 20km WNW of Susanville, CA
  11. 2.0 45km SE of Fall River Mills, CA
  12. 2.4 44km SE of Fall River Mills, CA
  13. 2.0 22km E of McArthur, CA
  14. 1.6 23km SE of Burney, CA
  15. 1.8 28km NNE of Susanville, 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.