QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

14km NNE of Lake Davis, CA

· 6.0 km deep · released about 51 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Plumas County 33 kmSierra County 47 kmLassen County 81 kmNevada County 83 kmStorey County 100 kmWashoe County 105 kmButte County 106 kmPlacer County 107 kmCarson City 111 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 2.1 (md)
Depth
6.0 km below the surface
Felt
no reports yet
Nearest
Plumas County, 33 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3181 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 51 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 210,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 51 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 39.9967, -120.4370. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Plumas County, CA 33 km (21 mi) E of here earthquakes near Plumas County
Sierra County, CA 47 km (29 mi) N of here earthquakes near Sierra County
Lassen County, CA 81 km (51 mi) S of here earthquakes near Lassen County
Nevada County, CA 83 km (51 mi) NNE of here earthquakes near Nevada County
Storey County, NV 100 km (62 mi) NW of here earthquakes near Storey County
Washoe County, NV 105 km (65 mi) SW of here earthquakes near Washoe County

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

Aftershocks so far

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

  1. 2.4 4km SE of Taylorsville, CA
  2. 1.5 2 km SE of Johnsville, California
  3. 2.1 4km SE of Taylorsville, CA
  4. 2.4 4km ESE of Taylorsville, CA
  5. 2.4 2km ESE of Taylorsville, CA
  6. 1.9 4km SE of Taylorsville, CA
  7. 1.6 2 km S of Plumas Eureka, California
  8. 2.0 9km SW of Susanville, CA
  9. 2.3 5km E of Johnstonville, CA
  10. 1.6 4 km WSW of Sattley, California
  11. 1.5 4 km WSW of Sattley, California
  12. 1.6 5 km WSW of Sattley, California
  13. 1.6 5 km NW of Sierra City, California
  14. 1.5 3 km WNW of Plumas Eureka, California
  15. 2.2 8km WSW of Cromberg, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.5 on 2016-08-04 — it released about 3,100 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.