QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

19km WNW of Belden, CA

· 11 km deep · released about 8.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Butte County 49 kmPlumas County 54 kmTehama County 67 kmShasta County 90 kmYuba County 91 kmSierra County 98 kmGlenn County 98 kmLassen County 99 kmNevada County 105 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 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Butte County, 49 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2656 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 8.7 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 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.7 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 40.0878, -121.4500. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Butte County, CA 49 km (30 mi) NNE of here earthquakes near Butte County
Plumas County, CA 54 km (34 mi) WNW of here earthquakes near Plumas County
Tehama County, CA 67 km (41 mi) E of here earthquakes near Tehama County
Shasta County, CA 90 km (56 mi) SE of here earthquakes near Shasta County
Yuba County, CA 91 km (57 mi) N of here earthquakes near Yuba County
Sierra County, CA 98 km (61 mi) NW of here earthquakes near Sierra 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. 2.0 2km W of Almanor, CA
  2. 2.1 3km WSW of Almanor, CA
  3. 1.5 3km ESE of Canyondam, CA
  4. 2.0 3km W of Hamilton Branch, CA
  5. 2.5 4km SE of Concow, CA
  6. 1.9 4km NNW of Almanor, CA
  7. 2.4 2km ESE of Prattville, CA
  8. 1.7 15km NNW of Chester, CA
  9. 1.8 4km SSE of East Shore, CA
  10. 1.5 11km SSW of Manton, CA
  11. 1.6 22km NW of Storrie, CA
  12. 1.7 12km SSW of Manton, CA
  13. 2.0 11km W of Chester, CA
  14. 2.5 11km W of Chester, CA
  15. 1.9 6km N of Chico, 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.