QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

1 km SW of Greenhorn, California

· 8.8 km deep · released about 9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Plumas County 12 kmSierra County 41 kmNevada County 67 kmButte County 77 kmYuba County 86 kmLassen County 92 kmPlacer County 93 kmStorey County 117 kmCarson City 120 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 1.6 (md)
Depth
8.8 km below the surface
Felt
no reports yet
Nearest
Plumas County, 12 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3340 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 9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 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 39.8962, -120.7595. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Plumas County, CA 12 km (7 mi) SSE of here earthquakes near Plumas County
Sierra County, CA 41 km (25 mi) NNW of here earthquakes near Sierra County
Nevada County, CA 67 km (41 mi) N of here earthquakes near Nevada County
Butte County, CA 77 km (48 mi) ENE of here earthquakes near Butte County
Yuba County, CA 86 km (53 mi) NE of here earthquakes near Yuba County
Lassen County, CA 92 km (57 mi) S of here earthquakes near Lassen County

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

Aftershocks so far

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

  1. 2.3 4km SSE of Canyondam, CA
  2. 2.3 10km NNW of Loyalton, CA
  3. 1.7 1 km NW of Paxton, California
  4. 1.6 6km NNE of Plumas Eureka, CA
  5. 1.6 3km NNW of Plumas Eureka, CA
  6. 1.7 4km NNW of Plumas Eureka, CA
  7. 2.5 4km NNW of Plumas Eureka, CA
  8. 1.8 1km NNW of Spring Garden, CA
  9. 1.7 18km SSW of Whitehawk, CA
  10. 2.0 2km NW of Paxton, CA
  11. 2.1 14km NNE of Lake Davis, CA
  12. 1.8 1km WSW of Canyondam, CA
  13. 1.5 9km NNW of Loyalton, CA
  14. 1.7 18km SSW of Whitehawk, CA
  15. 1.7 17km SW of Whitehawk, 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.