QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

5km E of Caribou, CA

· 3.2 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Plumas County 26 kmButte County 63 kmSierra County 75 kmLassen County 81 kmNevada County 92 kmYuba County 93 kmTehama County 96 kmShasta County 110 kmPlacer County 118 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
3.2 km below the surface
Felt
no reports yet
Nearest
Plumas County, 26 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1535 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 6.2 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 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 40.0820, -121.1012. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Plumas County, CA 26 km (16 mi) WNW of here earthquakes near Plumas County
Butte County, CA 63 km (39 mi) NE of here earthquakes near Butte County
Sierra County, CA 75 km (46 mi) NW of here earthquakes near Sierra County
Lassen County, CA 81 km (51 mi) SSW of here earthquakes near Lassen County
Nevada County, CA 92 km (57 mi) NNW of here earthquakes near Nevada County
Yuba County, CA 93 km (58 mi) NNE of here earthquakes near Yuba County

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

Aftershocks so far

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

  1. 2.0 5 km NNW of Plumas Eureka (historical), California
  2. 1.5 4 km W of Greenville, California
  3. 1.7 7 km S of Canyondam, California
  4. 1.6 Northern California
  5. 1.7 13 km NNW of Belden, California
  6. 1.9 17km S of Mineral, CA
  7. 1.6 1 km NNE of Paxton, California
  8. 1.9 14km WSW of Chester, CA
  9. 1.5 2 km WSW of Canyondam, California
  10. 1.5 1 km WNW of Keddie, California
  11. 1.7 1 km W of Keddie, California
  12. 1.6 0 km E of Paxton, California
  13. 2.8 3km N of Greenhorn, CA
  14. 1.8 2 km SSE of Canyondam, California
  15. 1.6 3 km SSE of Canyondam, 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.