QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

Earthquake near Topaz Ranch Estates, NV

No earthquake was likely felt in Topaz Ranch Estates in the 24 hours to 12:18 am PST (08:18 UTC). The last one was M 2.3, 8 km (5 mi) SW, at 6:36 pm PDT on 29 September 2026, estimated intensity II (weak) in town. Every earthquake near Topaz Ranch Estates

This page: a magnitude 2.7 earthquake was recorded 49 km (31 mi) south-southeast of Topaz Ranch Estates, NV, at 7:45 am PDT on 30 September 2023 (14:45 UTC), 5.8 km deep. 1 person has reported feeling it to USGS.

USGS: 13 km WNW of Bridgeport, CA

7:45 am PDT, Sep 30, 2023 · · 5.8 km deep · released about 330 lb of TNT

Every earthquake near Topaz Ranch Estates Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Alpine County 51 kmTuolumne County 61 kmMono County 61 kmDouglas County 70 kmLyon County 81 kmMineral County 86 kmMariposa County 94 kmCarson City 100 kmCalaveras 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
7:45 am PDT on 30 September 2023 ()
Where
49 km (31 mi) south-southeast of Topaz Ranch Estates, NV · earthquakes near Topaz Ranch Estates
Magnitude
M 2.7 (md)
Depth
5.8 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Alpine County, 51 km NW
Nearest mapped fault
Robinson Creek fault, 9 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 1069 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 24 km (15 mi) from the epicentre. In Topaz Ranch Estates, 49 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 330 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 46,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 33,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.9× the energy of this one
  4. This earthquake M 2.7 about 330 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 6.0 on 2021-07-08 — about 92,000 times the energy of this one.

Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:

  1. 5.8 3 km NE of Mono City, California · 35 km SE of this epicentre
  2. 5.2 23 km S of Walker, California · 12 km W of this epicentre
  3. 5.1 23 km E of Bridgeport, California · 35 km E of this epicentre
  4. 5.1 19 km W of Bridgeport, California · 12 km SW of this epicentre
  5. 5.0 Near Coleville, California · 33 km NNW 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 38.3047, -119.3678. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Alpine County, CA 51 km (32 mi) NW earthquakes near Alpine County
Tuolumne County, CA 61 km (38 mi) WSW earthquakes near Tuolumne County
Mono County, CA 61 km (38 mi) SE earthquakes near Mono County
Douglas County, NV 70 km (43 mi) NNW earthquakes near Douglas County
Lyon County, NV 81 km (50 mi) N earthquakes near Lyon County
Mineral County, NV 86 km (54 mi) ENE earthquakes near Mineral 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. 2.0 6 km SW of Walker, CA
  2. 1.5 3 km SW of Coleville, California
  3. 1.6 0 km WSW of Coleville, California
  4. 1.5 4 km SW of Topaz, California
  5. 1.5 2 km NW of Walker, California
  6. 1.7 1 km NNW of Walker, California
  7. 1.7 2 km WSW of Walker, California
  8. 1.5 4 km WSW of Walker, California
  9. 1.6 28 km SW of Hawthorne, Nevada
  10. 2.8 15 km SSW of Walker, CA
  11. 1.7 3 km SSW of Coleville, California
  12. 1.5 2 km SW of Walker, California
  13. 1.6 7 km SE of Markleeville, California
  14. 2.2 5 km N of Walker, CA
  15. 1.5 6 km WSW of Walker, 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.