QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

3km ESE of Canyondam, CA

· 2.9 km deep · released about 5.9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Plumas County 26 kmLassen County 71 kmButte County 73 kmSierra County 78 kmNevada County 99 kmTehama County 101 kmYuba County 102 kmShasta County 108 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 1.5 (md)
Depth
2.9 km below the surface
Felt
no reports yet
Nearest
Plumas County, 26 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2425 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 5.9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
  3. Around the size people start to feel M 3.0 160× the energy of this one
  4. This earthquake M 1.5 about 5.9 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 40.1587, -121.0425. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Plumas County, CA 26 km (16 mi) NW of here earthquakes near Plumas County
Lassen County, CA 71 km (44 mi) SSW of here earthquakes near Lassen County
Butte County, CA 73 km (45 mi) NE of here earthquakes near Butte County
Sierra County, CA 78 km (49 mi) NW of here earthquakes near Sierra County
Nevada County, CA 99 km (61 mi) NNW of here earthquakes near Nevada County
Tehama County, CA 101 km (63 mi) E of here earthquakes near Tehama County

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

Aftershocks so far

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

  1. 1.5 7km NW of Indian Falls, CA
  2. 1.6 4km NNE of Almanor, CA
  3. 2.5 5km NNE of East Quincy, CA
  4. 1.6 3km ENE of Prattville, CA
  5. 1.9 8km WNW of Caribou, CA
  6. 1.5 1km WNW of Canyondam, CA
  7. 1.9 5km NE of Greenhorn, CA
  8. 2.5 4km NE of Greenhorn, CA
  9. 2.0 3km E of Prattville, CA
  10. 1.9 6km SE of Chester, CA
  11. 1.8 2km SSW of Canyondam, CA
  12. 1.7 7km NNW of Belden, CA
  13. 1.9 3km NNW of Johnsville, CA
  14. 1.6 19km NW of Storrie, CA
  15. 1.6 4km SE of Canyondam, 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.