QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

3km ENE of Greenhorn, CA

· 12 km deep · released about 72 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Plumas County 12 kmSierra County 42 kmNevada County 69 kmButte County 80 kmLassen County 89 kmYuba County 90 kmPlacer County 95 kmStorey County 116 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 2.3 (md)
Depth
12 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Plumas County, 12 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3069 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 72 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 210,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 13× the energy of this one
  4. This earthquake M 2.3 about 72 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 39.9182, -120.7220. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Plumas County, CA 12 km (7 mi) SE of here earthquakes near Plumas County
Sierra County, CA 42 km (26 mi) NNW of here earthquakes near Sierra County
Nevada County, CA 69 km (43 mi) N of here earthquakes near Nevada County
Butte County, CA 80 km (50 mi) ENE of here earthquakes near Butte County
Lassen County, CA 89 km (55 mi) S of here earthquakes near Lassen County
Yuba County, CA 90 km (56 mi) NE 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. 2.4 4km SSE of Taylorsville, CA
  2. 1.8 7km NE of East Quincy, CA
  3. 2.4 4km SE of Taylorsville, CA
  4. 1.5 2 km SE of Johnsville, California
  5. 2.1 4km SE of Taylorsville, CA
  6. 1.6 2km SE of Twain, CA
  7. 2.4 4km ESE of Taylorsville, CA
  8. 2.4 2km ESE of Taylorsville, CA
  9. 1.9 4km SE of Taylorsville, CA
  10. 1.6 2 km S of Plumas Eureka, California
  11. 1.9 8km W of La Porte, CA
  12. 2.0 9km SW of Susanville, CA
  13. 1.6 4 km WSW of Sattley, California
  14. 1.5 4 km WSW of Sattley, California
  15. 1.6 5 km WSW of Sattley, 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.