QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

11 km E of Chilcoot-Vinton, California

· 8.9 km deep · released about 56 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sierra County 52 kmStorey County 60 kmPlumas County 72 kmCarson City 78 kmNevada County 88 kmPlacer County 104 kmWashoe County 105 kmDouglas County 108 kmLassen County 112 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
8.9 km below the surface
Felt
no reports yet
Nearest
Sierra County, 52 km WSW
Nearest mapped fault
Upper Long Valley fault, 5 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3010 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 56 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 5.8 270,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 190,000× the energy of this one
  3. Around the size people start to feel M 3.0 17× the energy of this one
  4. This earthquake M 2.2 about 56 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 39.8243, -120.0120. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sierra County, CA 52 km (32 mi) ENE of here earthquakes near Sierra County
Storey County, NV 60 km (37 mi) NW of here earthquakes near Storey County
Plumas County, CA 72 km (45 mi) ESE of here earthquakes near Plumas County
Carson City, NV 78 km (48 mi) NNW of here earthquakes near Carson City
Nevada County, CA 88 km (54 mi) NE of here earthquakes near Nevada County
Placer County, CA 104 km (65 mi) NE of here earthquakes near Placer County

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

Aftershocks so far

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

  1. 2.5 17km NNE of Chilcoot-Vinton, CA
  2. 1.5 4 km NW of Spanish Springs, Nevada
  3. 2.6 9km NNW of Loyalton, CA
  4. 1.9 10km NNW of Loyalton, CA
  5. 2.5 10km NNW of Loyalton, CA
  6. 2.3 10km NNW of Loyalton, CA
  7. 2.0 21km NW of Truckee, CA
  8. 1.6 13 km NE of Spanish Springs, Nevada
  9. 2.1 14km NNE of Lake Davis, CA
  10. 1.5 9km NNW of Loyalton, CA
  11. 1.5 Nevada
  12. 1.5 6 km NNE of Mogul, Nevada
  13. 1.9 3 km NNE of Reno, Nevada
  14. 1.9 3 km NNE of Reno, Nevada
  15. 1.9 7km N of Loyalton, 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 2,800 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.