QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

Earthquake near Reno, NV

No earthquake was likely felt in Reno in the 24 hours to 2:40 pm PST (22:40 UTC). The last one was M 2.3, 7 km (4 mi) SW, at 11:07 pm PDT on 10 October 2026, estimated intensity II (weak) in town; 7 felt reports to USGS. Every earthquake near Reno

This page: a magnitude 2.4 earthquake was recorded 45 km (28 mi) west-northwest of Reno, NV, at 8:47 am PDT on 29 September 2023 (15:47 UTC), 4.9 km deep.

USGS: 5 km W of Loyalton, CA

41 km (25 mi) WNW of Reno, NV

8:47 am PDT, Sep 29, 2023 · · 4.9 km deep · released about 120 lb of TNT

10 km30 km60 km120 km N Sierra County 22 kmPlumas County 57 kmNevada County 58 kmStorey County 71 kmCarson City 75 kmPlacer County 77 kmYuba County 100 kmEl Dorado County 101 kmDouglas County 104 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
8:47 am PDT on 29 September 2023 ()
Where
45 km (28 mi) west-northwest of Reno, NV · earthquakes near Reno
Magnitude
M 2.4 (md)
Depth
4.9 km below the surface
Felt
no reports yet
Nearest
Sierra County, 22 km WSW
Nearest mapped fault
Mohawk Valley fault, 12 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 1140 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 21 km (13 mi) from the epicentre. In Reno, 45 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, Cold Springs.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 2,400 times the energy of this one.

Before 2016, the USGS record lists 11 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.0 Near Reno, Nevada · 47 km ESE of this epicentre
  2. 6.0 6 km WNW of Verdi, California · 23 km SE of this epicentre
  3. 5.9 9 km NW of Truckee, California · 31 km S of this epicentre
  4. 5.6 6 km NNE of Doyle, California · 50 km NNE of this epicentre
  5. 5.6 5 km NE of Loyalton, California · 10 km ENE 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 39.6727, -120.2992. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sierra County, CA 22 km (14 mi) WSW earthquakes near Sierra County
Plumas County, CA 57 km (36 mi) NW earthquakes near Plumas County
Nevada County, CA 58 km (36 mi) SW earthquakes near Nevada County
Storey County, NV 71 km (44 mi) ESE earthquakes near Storey County
Carson City, NV 75 km (46 mi) SE earthquakes near Carson City
Placer County, CA 77 km (48 mi) SSW earthquakes near Placer County

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

Aftershocks so far

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

  1. 2.2 5 km NNE of Verdi, California
  2. 1.6 5 km N of Verdi, Nevada
  3. 2.2 5 km SSE of Floriston, California
  4. 1.7 2 km NNE of Portola, California
  5. 2.2 11 km NNE of Kings Beach, CA
  6. 2.1 20 km NNW of Truckee, CA
  7. 2.2 11 km NNE of Tahoe Vista, CA
  8. 2.5 11 km NNE of Tahoe Vista, CA
  9. 1.6 5 km SSE of Floriston, California
  10. 2.4 16 km SW of Loyalton, CA
  11. 1.5 6 km SE of Beckwourth, California
  12. 2.3 18 km NNW of Truckee, CA
  13. 2.9 0 km NNE of Whitehawk, CA
  14. 2.3 4 km S of Cromberg, CA
  15. 2.1 6 km W of Tahoe Vista, 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.

On USGS

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