QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

2 km SE of Spring Garden, California

· 12 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Plumas County 13 kmSierra County 40 kmNevada County 65 kmButte County 76 kmYuba County 84 kmPlacer County 91 kmLassen County 93 kmStorey County 117 kmCarson City 119 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 (ml)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Plumas County, 13 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1551 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 5.4 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 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 39.8819, -120.7651. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Plumas County, CA 13 km (8 mi) SSE of here earthquakes near Plumas County
Sierra County, CA 40 km (25 mi) NNW of here earthquakes near Sierra County
Nevada County, CA 65 km (40 mi) N of here earthquakes near Nevada County
Butte County, CA 76 km (47 mi) ENE of here earthquakes near Butte County
Yuba County, CA 84 km (52 mi) NE of here earthquakes near Yuba County
Placer County, CA 91 km (57 mi) N of here earthquakes near Placer County

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

Aftershocks so far

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

  1. 2.2 17km WSW of Loyalton, CA
  2. 1.5 4 km SSW of Greenville, California
  3. 2.4 6km NW of Johnsville, CA
  4. 1.6 5 km WNW of Plumas Eureka, California
  5. 2.0 5 km NNW of Plumas Eureka (historical), California
  6. 1.5 4 km W of Greenville, California
  7. 1.7 7 km S of Canyondam, California
  8. 1.6 6 km NNW of Beckwourth, California
  9. 1.6 Northern California
  10. 1.6 8 km SSE of Johnsville, California
  11. 1.6 7 km S of Plumas Eureka (historical), California
  12. 1.5 9 km SSE of Beckwourth, California
  13. 1.6 1 km NNE of Paxton, California
  14. 1.5 2 km WSW of Canyondam, California
  15. 1.5 1 km WNW of Keddie, 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

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