QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

11km NNE of Lake Davis, CA

· 12 km deep · released about 510 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Plumas County 33 kmSierra County 44 kmNevada County 80 kmLassen County 85 kmStorey County 98 kmPlacer County 103 kmButte County 105 kmWashoe County 108 kmCarson City 108 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 2.8 (md)
Depth
12 km below the surface
Felt
13 reports · strongest reported intensity III
Nearest
Plumas County, 33 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1775 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 13 people have reported feeling it to USGS.

How big was it?

This earthquake released about 510 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 30,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 21,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.9× the energy of this one
  4. This earthquake M 2.8 about 510 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 39.9665, -120.4418. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Plumas County, CA 33 km (20 mi) E of here earthquakes near Plumas County
Sierra County, CA 44 km (27 mi) N of here earthquakes near Sierra County
Nevada County, CA 80 km (49 mi) NNE of here earthquakes near Nevada County
Lassen County, CA 85 km (53 mi) S of here earthquakes near Lassen County
Storey County, NV 98 km (61 mi) NW of here earthquakes near Storey County
Placer County, CA 103 km (64 mi) NNE of here earthquakes near Placer County

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

Aftershocks so far

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

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

For this area

The largest earthquake within 50 km in our catalogue was M 4.5 on 2016-08-04 — it released about 310 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.