QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

6km WSW of Belden, CA

· 13 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Plumas County 42 kmButte County 43 kmTehama County 79 kmYuba County 79 kmSierra County 82 kmNevada County 90 kmLassen County 101 kmGlenn County 102 kmShasta County 106 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 1.8 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Plumas County, 42 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2580 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 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 640,000× the energy of this one
  3. Around the size people start to feel M 3.0 57× the energy of this one
  4. This earthquake M 1.8 about 17 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 39.9840, -121.3200. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Plumas County, CA 42 km (26 mi) W of here earthquakes near Plumas County
Butte County, CA 43 km (27 mi) NE of here earthquakes near Butte County
Tehama County, CA 79 km (49 mi) E of here earthquakes near Tehama County
Yuba County, CA 79 km (49 mi) N of here earthquakes near Yuba County
Sierra County, CA 82 km (51 mi) NW of here earthquakes near Sierra County
Nevada County, CA 90 km (56 mi) NNW of here earthquakes near Nevada County

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

Aftershocks so far

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

  1. 1.5 15km ENE of East Shore, CA
  2. 1.7 5km NE of Canyondam, CA
  3. 3.1 5km NE of East Quincy, CA
  4. 1.7 14km SW of Almanor, CA
  5. 1.6 3km SSW of East Shore, CA
  6. 1.5 4km NNW of Almanor, CA
  7. 2.3 4km N of Almanor, CA
  8. 1.8 3km NNE of Prattville, CA
  9. 1.7 10km N of Thermalito, CA
  10. 1.9 10km N of Spring Garden, CA
  11. 2.3 5km NNE of Little Grass Valley, CA
  12. 2.1 9km NW of Caribou, CA
  13. 2.1 6km S of Bucks Lake, CA
  14. 2.1 8km W of La Porte, CA
  15. 1.9 10km NNW of Oroville, 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.