QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

4km WSW of Canyondam, CA

· 19 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Plumas County 31 kmButte County 68 kmLassen County 76 kmSierra County 82 kmTehama County 95 kmNevada County 100 kmYuba County 100 kmShasta County 103 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 1.7 (md)
Depth
19 km below the surface
Felt
no reports yet
Nearest
Plumas County, 31 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2995 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 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× the energy of this one
  4. This earthquake M 1.7 about 11 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 40.1512, -121.1210. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Plumas County, CA 31 km (19 mi) NW of here earthquakes near Plumas County
Butte County, CA 68 km (42 mi) NE of here earthquakes near Butte County
Lassen County, CA 76 km (47 mi) SW of here earthquakes near Lassen County
Sierra County, CA 82 km (51 mi) NW of here earthquakes near Sierra County
Tehama County, CA 95 km (59 mi) E of here earthquakes near Tehama County
Nevada County, CA 100 km (62 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

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

  1. 2.9 4km SE of Taylorsville, CA
  2. 1.8 5km SE of Taylorsville, CA
  3. 1.6 4 km SSE of Taylorsville, California
  4. 1.6 5km NNE of Caribou, CA
  5. 1.6 4km NNE of Caribou, CA
  6. 1.5 9 km S of Taylorsville, California
  7. 2.1 0km ENE of Canyondam, CA
  8. 2.4 4km SE of Taylorsville, CA
  9. 2.2 5km SE of Taylorsville, CA
  10. 1.8 6km SSE of Taylorsville, CA
  11. 2.4 5km SE of Taylorsville, CA
  12. 1.8 8km NNE of East Quincy, CA
  13. 2.0 4km SE of Taylorsville, CA
  14. 2.9 4km SE of Taylorsville, CA
  15. 1.6 8 km SSE of Taylorsville, California

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.