QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

4km NE of Lake Davis, CA

· 1.7 km deep · released about 54 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Plumas County 34 kmSierra County 36 kmNevada County 72 kmLassen County 93 kmStorey County 93 kmPlacer County 96 kmCarson City 102 kmButte County 102 kmYuba County 104 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 2.2 (md)
Depth
1.7 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Plumas County, 34 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1380 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 54 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 280,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 54 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 39.8932, -120.4417. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Plumas County, CA 34 km (21 mi) ESE of here earthquakes near Plumas County
Sierra County, CA 36 km (22 mi) N of here earthquakes near Sierra County
Nevada County, CA 72 km (45 mi) NNE of here earthquakes near Nevada County
Lassen County, CA 93 km (58 mi) S of here earthquakes near Lassen County
Storey County, NV 93 km (58 mi) WNW of here earthquakes near Storey County
Placer County, CA 96 km (59 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

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

  1. 2.4 9km NNW of Loyalton, CA
  2. 1.8 6 km S of Cold Springs, Nevada
  3. 1.6 9 km SSE of Sierraville, California
  4. 1.6 Northern California
  5. 1.6 Northern California
  6. 1.5 5 km SSW of Cromberg, California
  7. 2.2 17km WSW of Loyalton, CA
  8. 2.4 6km NW of Johnsville, CA
  9. 1.6 5 km WNW of Plumas Eureka, California
  10. 2.0 5 km NNW of Plumas Eureka (historical), California
  11. 2.3 11km NW of Verdi-Mogul, NV
  12. 1.9 6 km NNW of Verdi, California
  13. 1.6 6 km NNW of Beckwourth, California
  14. 1.6 Northern California
  15. 1.6 8 km SSE of Johnsville, 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 4.7 on 2021-05-07 — it released about 5,200 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.