QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

Earthquake near Truckee, CA

No earthquake was likely felt in Truckee in the 24 hours to 8:08 am PST (16:08 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 2.2 earthquake was recorded 36 km (22 mi) north-northwest of Truckee, CA, at 6:15 am PDT on 29 April 2023 (13:15 UTC), 7.3 km deep.

USGS: 17km WSW of Loyalton, CA

49 km (30 mi) W of Reno, NV

6:15 am PDT, Apr 29, 2023 · · 7.3 km deep · released about 62 lb of TNT

Every earthquake near Truckee Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sierra County 9 kmNevada County 45 kmPlumas County 56 kmPlacer County 65 kmCarson City 76 kmStorey County 78 kmYuba County 88 kmEl Dorado County 91 kmButte County 102 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
6:15 am PDT on 29 April 2023 ()
Where
36 km (22 mi) north-northwest of Truckee, CA · earthquakes near Truckee
Magnitude
M 2.2 (md)
Depth
7.3 km below the surface
Felt
no reports yet
Nearest
Sierra County, 9 km WSW
Nearest mapped fault
Mohawk Valley fault, under 1 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 1292 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 17 km (11 mi) from the epicentre. In Truckee, 36 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.

Earthquakes near other towns within 30 km: Portola.

How big was it?

This earthquake released about 62 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 5.8 240,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 170,000× the energy of this one
  3. Around the size people start to feel M 3.0 15× the energy of this one
  4. This earthquake M 2.2 about 62 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 4,600 times the energy of this one.

Before 2016, the USGS record lists 9 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.0 6 km WNW of Verdi, California · 29 km E of this epicentre
  2. 5.9 9 km NW of Truckee, California · 26 km SSE of this epicentre
  3. 5.6 5 km NE of Loyalton, California · 23 km NE of this epicentre
  4. 5.3 11 km N of Soda Springs, California · 19 km S of this epicentre
  5. 5.3 1 km NNE of Verdi, Nevada · 38 km E 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 39.5972, -120.4143. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sierra County, CA 9 km (6 mi) WSW earthquakes near Sierra County
Nevada County, CA 45 km (28 mi) SW earthquakes near Nevada County
Plumas County, CA 56 km (35 mi) NW earthquakes near Plumas County
Placer County, CA 65 km (40 mi) SSW earthquakes near Placer County
Carson City, NV 76 km (47 mi) SE earthquakes near Carson City
Storey County, NV 78 km (49 mi) ESE earthquakes near Storey County

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

Aftershocks so far

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

  1. 1.7 10 km NE of Cromberg, California
  2. 1.6 6 km SW of Cromberg, California
  3. 2.1 23 km W of Sunnyside-Tahoe City, CA
  4. 2.2 24 km W of Sunnyside-Tahoe City, CA
  5. 2.1 24 km W of Sunnyside-Tahoe City, CA
  6. 1.6 7 km S of Cold Springs, Nevada
  7. 2.0 Nevada
  8. 2.6 5 km SSE of Floriston, California
  9. 2.5 13 km SSW of Loyalton, CA
  10. 2.1 9 km NNE of Truckee, CA
  11. 1.9 6 km S of Cold Springs, Nevada
  12. 2.1 7 km S of Cold Springs, Nevada
  13. 2.3 7 km S of Cold Springs, Nevada
  14. 1.6 Nevada
  15. 1.8 6 km SSE of Cold Springs, Nevada

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.