QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

8 km NNE of Lake Davis, California

· 9.9 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Plumas County 33 kmSierra County 41 kmNevada County 77 kmLassen County 87 kmStorey County 97 kmPlacer County 100 kmButte County 104 kmCarson City 106 kmYuba County 107 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 1.8 (md)
Depth
9.9 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 3009 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 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 970,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 680,000× the energy of this one
  3. Around the size people start to feel M 3.0 61× the energy of this one
  4. This earthquake M 1.8 about 16 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 39.9400, -120.4452. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Plumas County, CA 33 km (20 mi) E of here earthquakes near Plumas County
Sierra County, CA 41 km (25 mi) N of here earthquakes near Sierra County
Nevada County, CA 77 km (48 mi) NNE of here earthquakes near Nevada County
Lassen County, CA 87 km (54 mi) S of here earthquakes near Lassen County
Storey County, NV 97 km (60 mi) NW of here earthquakes near Storey County
Placer County, CA 100 km (62 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 6km NNE of Plumas Eureka, CA
  2. 1.6 3km NNW of Plumas Eureka, CA
  3. 1.7 4km NNW of Plumas Eureka, CA
  4. 2.5 4km NNW of Plumas Eureka, CA
  5. 1.8 1km NNW of Spring Garden, CA
  6. 1.7 18km SSW of Whitehawk, CA
  7. 2.1 14km NNE of Lake Davis, CA
  8. 1.5 9km NNW of Loyalton, CA
  9. 1.7 18km SSW of Whitehawk, CA
  10. 1.7 17km SW of Whitehawk, CA
  11. 1.6 18km SSW of Whitehawk, CA
  12. 1.8 3km NNE of Spring Garden, CA
  13. 1.5 2 km ESE of Greenville, California
  14. 2.3 3km WNW of Taylorsville, CA
  15. 2.3 8km NW of Honey Lake, 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 10,000 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.