QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

9 km NNW of Greenhorn, California

· 16 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Plumas County 2 kmSierra County 51 kmNevada County 76 kmButte County 77 kmLassen County 83 kmYuba County 92 kmPlacer 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 1.6 (ml)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Plumas County, 2 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1602 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 7.6 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 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 39.9833, -120.7992. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Plumas County, CA 2 km (1 mi) ESE of here earthquakes near Plumas County
Sierra County, CA 51 km (32 mi) NNW of here earthquakes near Sierra County
Nevada County, CA 76 km (47 mi) N of here earthquakes near Nevada County
Butte County, CA 77 km (48 mi) ENE of here earthquakes near Butte County
Lassen County, CA 83 km (51 mi) S of here earthquakes near Lassen County
Yuba County, CA 92 km (57 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

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

  1. 2.2 1km WNW of Lake Davis, CA
  2. 2.2 0km WNW of Lake Davis, CA
  3. 2.0 1km NW of Lake Davis, CA
  4. 2.2 3km ENE of Canyondam, CA
  5. 1.9 5km NNE of Almanor, CA
  6. 2.0 3km WSW of Whitehawk, CA
  7. 1.7 2 km ENE of East Quincy, California
  8. 2.6 4km NNE of Almanor, CA
  9. 1.5 6km NNE of Almanor, CA
  10. 1.6 3km S of Canyondam, CA
  11. 2.7 10km SSE of Beckwourth, CA
  12. 2.0 6km N of Greenhorn, CA
  13. 1.8 3km N of Spring Garden, CA
  14. 1.8 9km W of Susanville, CA
  15. 2.4 1km NE of Twain, 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.