QuakeIndex

Earthquake · automatic estimate, may change

M 1.5ml

8 km NE of Truckee, California

· 10 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sierra County 40 kmCarson City 42 kmStorey County 52 kmNevada County 57 kmPlacer County 63 kmDouglas County 70 kmEl Dorado County 76 kmLyon County 90 kmPlumas County 90 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 1.5 (ml)
Depth
10 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Sierra County, 40 km WNW
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 2014 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 39.3910, -120.1235. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sierra County, CA 40 km (25 mi) ESE of here earthquakes near Sierra County
Carson City, NV 42 km (26 mi) NW of here earthquakes near Carson City
Storey County, NV 52 km (32 mi) W of here earthquakes near Storey County
Nevada County, CA 57 km (35 mi) E of here earthquakes near Nevada County
Placer County, CA 63 km (39 mi) NE of here earthquakes near Placer County
Douglas County, NV 70 km (43 mi) NW of here earthquakes near Douglas County

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

Aftershocks so far

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

  1. 1.9 9km SE of Dollar Point, CA
  2. 2.6 9km SE of Dollar Point, CA
  3. 2.3 10km SE of Dollar Point, CA
  4. 2.4 9km SE of Dollar Point, CA
  5. 2.1 9km SE of Dollar Point, CA
  6. 2.0 9km SE of Dollar Point, CA
  7. 4.2 10km SE of Dollar Point, CA
  8. 2.9 10km SE of Dollar Point, CA
  9. 2.3 9km SE of Dollar Point, CA
  10. 2.8 9km SE of Dollar Point, CA
  11. 3.4 9km SE of Dollar Point, CA
  12. 2.4 12km NW of Truckee, CA
  13. 1.5 15 km SSE of Sierraville, California
  14. 1.7 8 km SE of Dollar Point, California
  15. 1.5 16 km SSE of Sierraville, 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 4.5 on 2020-03-21 — it released about 32,000 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.