QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

10km SSE of Beckwourth, CA

· 9.6 km deep · released about 360 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sierra County 25 kmPlumas County 49 kmNevada County 62 kmStorey County 78 kmPlacer County 83 kmCarson City 84 kmYuba County 101 kmEl Dorado County 109 kmButte County 109 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 2.7 (md)
Depth
9.6 km below the surface
Felt
6 reports · strongest reported intensity IV
Nearest
Sierra County, 25 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1983 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 6 people have reported feeling it to USGS.

How big was it?

This earthquake released about 360 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 42,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 30,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.6× the energy of this one
  4. This earthquake M 2.7 about 360 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 39.7497, -120.3390. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sierra County, CA 25 km (15 mi) NE of here earthquakes near Sierra County
Plumas County, CA 49 km (31 mi) ESE of here earthquakes near Plumas County
Nevada County, CA 62 km (39 mi) NE of here earthquakes near Nevada County
Storey County, NV 78 km (48 mi) WNW of here earthquakes near Storey County
Placer County, CA 83 km (52 mi) NNE of here earthquakes near Placer County
Carson City, NV 84 km (52 mi) NW of here earthquakes near Carson City

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

Aftershocks so far

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

  1. 3.1 14km SSW of Loyalton, CA
  2. 2.8 11km NNE of Lake Davis, CA
  3. 1.5 10 km ENE of Doyle, California
  4. 1.7 35km WNW of Truckee, CA
  5. 2.1 7km N of Greenhorn, CA
  6. 2.1 1km WNW of Lake Davis, CA
  7. 2.0 19km SW of Loyalton, CA
  8. 3.3 24km WNW of Truckee, CA
  9. 2.5 19km NW of Truckee, CA
  10. 1.8 0 km S of Lake Davis, California
  11. 2.6 0km W of Lake Davis, CA
  12. 1.6 7 km ENE of Cromberg, California
  13. 2.1 14km SE of Honey Lake, CA
  14. 2.5 1km NW of Lake Davis, CA
  15. 2.4 1km NW of Lake Davis, 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 440 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.