QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

2km SW of McArthur, CA

· 12 km deep · released about 27 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 61 kmLassen County 76 kmModoc County 85 kmSiskiyou County 112 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
12 km below the surface
Felt
no reports yet
Nearest
Shasta County, 61 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1926 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 27 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 5.8 560,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 390,000× the energy of this one
  3. Around the size people start to feel M 3.0 35× the energy of this one
  4. This earthquake M 2.0 about 27 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 41.0333, -121.4173. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 61 km (38 mi) ENE of here earthquakes near Shasta County
Lassen County, CA 76 km (47 mi) WNW of here earthquakes near Lassen County
Modoc County, CA 85 km (53 mi) SW of here earthquakes near Modoc County
Siskiyou County, CA 112 km (69 mi) ESE of here earthquakes near Siskiyou County
Tehama County, CA 122 km (76 mi) NE of here earthquakes near Tehama County
Plumas County, CA 126 km (78 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

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

  1. 1.6 23 km SE of Burney, CA
  2. 1.6 9 km NNW of Montgomery Creek, CA
  3. 1.6 8 km N of Montgomery Creek, CA
  4. 2.3 17 km NW of Fall River Mills, CA
  5. 2.8 25 km SE of Burney, CA
  6. 2.3 17 km NW of Fall River Mills, CA
  7. 2.3 16 km NW of Fall River Mills, CA
  8. 2.3 18 km NW of Fall River Mills, CA
  9. 1.8 37 km N of Chester, CA
  10. 2.0 37km SE of Fall River Mills, CA
  11. 1.8 5km NNE of Montgomery Creek, CA
  12. 2.4 47km NNW of Susanville, CA
  13. 2.1 8km ENE of Montgomery Creek, CA
  14. 2.3 21km SSE of Burney, CA
  15. 1.6 12km WNW of Burney, 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.