QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

16km NNE of Susanville, CA

· -1.1 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lassen County 19 kmPlumas County 66 kmWashoe County 79 kmSierra County 108 kmModoc County 116 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 2.4 (md)
Depth
-1.1 km below the surface
Felt
no reports yet
Nearest
Lassen County, 19 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3008 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 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 120,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 86,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.7× the energy of this one
  4. This earthquake M 2.4 about 120 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 40.5520, -120.5675. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lassen County, CA 19 km (12 mi) SSE of here earthquakes near Lassen County
Plumas County, CA 66 km (41 mi) NNE of here earthquakes near Plumas County
Washoe County, NV 79 km (49 mi) WSW of here earthquakes near Washoe County
Sierra County, CA 108 km (67 mi) N of here earthquakes near Sierra County
Modoc County, CA 116 km (72 mi) S of here earthquakes near Modoc County
Butte County, CA 132 km (82 mi) NE of here earthquakes near Butte County

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

Aftershocks so far

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

  1. 1.7 9km NNW of Susanville, CA
  2. 1.5 8km NE of East Shore, CA
  3. 1.5 8km ENE of Hamilton Branch, CA
  4. 1.8 7km SW of Susanville, CA
  5. 1.6 30km NNE of Hamilton Branch, CA
  6. 1.5 15km ENE of East Shore, CA
  7. 1.8 20km WNW of Susanville, CA
  8. 2.0 45km SE of Fall River Mills, CA
  9. 2.4 44km SE of Fall River Mills, CA
  10. 1.8 28km NNE of Susanville, CA
  11. 2.3 15km NNW of Susanville, CA
  12. 2.4 3km ESE of Janesville, CA
  13. 1.5 14km NNE of Hamilton Branch, CA
  14. 1.9 9km WSW of Susanville, CA
  15. 1.7 15km SSW 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.