QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

29 km NW of Susanville, California

· 0.0 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lassen County 28 kmPlumas County 67 kmShasta County 97 kmWashoe County 107 kmModoc County 113 kmSierra County 118 kmButte 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 1.6 (ml)
Depth
0.0 km below the surface
Felt
no reports yet
Nearest
Lassen County, 28 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1732 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 40.5916, -120.9163. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lassen County, CA 28 km (18 mi) WSW of here earthquakes near Lassen County
Plumas County, CA 67 km (42 mi) N of here earthquakes near Plumas County
Shasta County, CA 97 km (60 mi) E of here earthquakes near Shasta County
Washoe County, NV 107 km (66 mi) W of here earthquakes near Washoe County
Modoc County, CA 113 km (70 mi) S of here earthquakes near Modoc County
Sierra County, CA 118 km (73 mi) NNW of here earthquakes near Sierra County

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

Aftershocks so far

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

  1. 2.5 1km ENE of Almanor, CA
  2. 2.6 4km E of Prattville, CA
  3. 2.4 3km E of Prattville, CA
  4. 2.6 3km SSW of East Shore, CA
  5. 2.6 4km E of Prattville, CA
  6. 2.4 4km SW of East Shore, CA
  7. 2.8 2km NNE of Almanor, CA
  8. 5.5 Lake Almanor Earthquake
  9. 2.3 2km ESE of Canyondam, CA
  10. 2.4 47km NNW of Susanville, CA
  11. 1.8 8km NW of Chester, CA
  12. 2.3 15km NW of Chester, CA
  13. 1.9 16km NW of Chester, CA
  14. 2.2 17km NW of Chester, CA
  15. 1.9 17km NW of Chester, 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.