QuakeIndex

Earthquake · reviewed by a seismologist

M 3.7mw

17km NNW of Truckee, CA

· 7.9 km deep · released about 5.5 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sierra County 26 kmNevada County 49 kmCarson City 56 kmPlacer County 62 kmStorey County 62 kmPlumas County 76 kmEl Dorado County 81 kmDouglas County 84 kmYuba County 97 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 3.7 (mw)
Depth
7.9 km below the surface
Felt
532 reports · strongest reported intensity IV
Measured shaking
intensity V (ShakeMap)
USGS impact alert
green
Nearest
Sierra County, 26 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1564 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 532 people have reported feeling it to USGS.

How big was it?

This earthquake released about 5.5 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 31,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 970× the energy of this one
  4. This earthquake M 3.7 about 5.5 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 12× more

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 39.4752, -120.2455. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sierra County, CA 26 km (16 mi) ESE of here earthquakes near Sierra County
Nevada County, CA 49 km (31 mi) ENE of here earthquakes near Nevada County
Carson City, NV 56 km (35 mi) NW of here earthquakes near Carson City
Placer County, CA 62 km (38 mi) NE of here earthquakes near Placer County
Storey County, NV 62 km (39 mi) W of here earthquakes near Storey County
Plumas County, CA 76 km (47 mi) SE of here earthquakes near Plumas County

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

Aftershocks so far

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

  1. 1.5 5 km SSW of Sattley, California
  2. 2.3 7km NW of Verdi-Mogul, NV
  3. 1.9 20km SW of Whitehawk, CA
  4. 2.2 15km NNW of Incline Village-Crystal Bay, NV
  5. 1.5 Northern California
  6. 1.6 4 km E of Cold Springs, Nevada
  7. 1.6 4 km E of Cold Springs, Nevada
  8. 1.5 7 km N of Incline Village, Nevada
  9. 2.4 4 km E of Cold Springs, Nevada
  10. 2.3 4 km E of Cold Springs, Nevada
  11. 1.8 4 km E of Cold Springs, Nevada
  12. 1.7 4 km E of Cold Springs, Nevada
  13. 2.0 10 km SSW of Kingvale, California
  14. 1.8 8 km E of Floriston, California
  15. 2.1 8 km E of Floriston, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.