QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

Earthquake near Truckee, CA

No earthquake was likely felt in Truckee in the 24 hours to 12:36 pm PST (20:36 UTC). The last one was M 3.3, 49 km (31 mi) S, at 3:00 am PDT on 2 October 2026, estimated intensity II (weak) in town; 532 felt reports to USGS. Every earthquake near Truckee

This page: a magnitude 2.0 earthquake was recorded 31 km (20 mi) west-southwest of Truckee, CA, at 6:04 pm PDT on 28 September 2022 (01:04 UTC), 10 km deep.

USGS: 32km WSW of Truckee, CA

6:04 pm PDT, Sep 28, 2022 · · 10 km deep · released about 33 lb of TNT

Every earthquake near Truckee Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Nevada County 23 kmPlacer County 25 kmSierra County 40 kmEl Dorado County 48 kmCarson City 67 kmYuba County 71 kmDouglas County 86 kmAmador County 87 kmStorey County 89 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
6:04 pm PDT on 28 September 2022 ()
Where
31 km (20 mi) west-southwest of Truckee, CA · earthquakes near Truckee
Magnitude
M 2.0 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Nevada County, 23 km WNW
Nearest mapped fault
Foothills fault system, 23 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 1505 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 13 km (8 mi) from the epicentre. In Truckee, 31 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 33 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 450,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 320,000× the energy of this one
  3. Around the size people start to feel M 3.0 29× the energy of this one
  4. This earthquake M 2.0 about 33 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.7 on 2021-05-07 — about 8,500 times the energy of this one.

Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:

  1. 5.9 9 km NW of Truckee, California · 30 km NE of this epicentre
  2. 5.3 11 km N of Soda Springs, California · 26 km NNE of this epicentre
  3. 5.1 8 km SSW of Kingvale, California · 7 km ENE of this epicentre
  4. 5.0 Nevada County, California · 38 km WNW of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 39.2202, -120.5217. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Nevada County, CA 23 km (14 mi) WNW earthquakes near Nevada County
Placer County, CA 25 km (15 mi) SW earthquakes near Placer County
Sierra County, CA 40 km (25 mi) N earthquakes near Sierra County
El Dorado County, CA 48 km (30 mi) S earthquakes near El Dorado County
Carson City, NV 67 km (42 mi) E earthquakes near Carson City
Yuba County, CA 71 km (44 mi) W earthquakes near Yuba County

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

Aftershocks so far

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

  1. 2.2 3 km WSW of Tahoe Vista, CA
  2. 2.5 4 km NNE of Dollar Point, CA
  3. 2.0 4 km WSW of Tahoe Vista, CA
  4. 2.1 16 km NNW of Truckee, CA
  5. 2.5 4 km N of Dollar Point, CA
  6. 2.1 3 km WSW of Tahoe Vista, CA
  7. 3.2 4 km N of Dollar Point, CA
  8. 2.1 26 km W of Sunnyside-Tahoe City, CA
  9. 2.0 12 km N of Kings Beach, CA
  10. 2.0 4 km WSW of Tahoe Vista, CA
  11. 2.4 4 km N of Dollar Point, CA
  12. 2.1 23 km W of Sunnyside-Tahoe City, CA
  13. 2.2 24 km W of Sunnyside-Tahoe City, CA
  14. 2.1 24 km W of Sunnyside-Tahoe City, CA
  15. 2.6 5 km SSE 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.