QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Topaz Ranch Estates, NV

No earthquake was likely felt in Topaz Ranch Estates in the 24 hours to 7:21 pm PST (03:21 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 1.6 earthquake was recorded 5 km (3 mi) south-southeast of Topaz Ranch Estates, NV, at 3:03 pm PST on 28 December 2019 (23:03 UTC), 3.4 km deep.

USGS: 5 km SSE of Topaz Ranch Estates, Nevada

56 km (35 mi) SSE of Carson, NV · 101 km (63 mi) SSE of Reno, NV

3:03 pm PST, Dec 28, 2019 · · 3.4 km deep · released about 7.6 lb of TNT

10 km30 km60 km120 km N Douglas County 26 kmAlpine County 29 kmLyon County 44 kmCarson City 56 kmStorey County 83 kmTuolumne County 86 kmEl Dorado County 93 kmMineral County 94 kmMono County 101 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
3:03 pm PST on 28 December 2019 ()
Where
5 km (3 mi) south-southeast of Topaz Ranch Estates, NV · earthquakes near Topaz Ranch Estates
Magnitude
M 1.6 (ml)
Depth
3.4 km below the surface
Felt
no reports yet
Nearest
Douglas County, 26 km NNW
Nearest mapped fault
Antelope Valley fault, 3 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 2501 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 11 km (7 mi) from the epicentre. In Topaz Ranch Estates, 5 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.

Likely felt in: Topaz Ranch Estates 5 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

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

  1. 6.1 4 km S of Carter Springs, Nevada · 21 km NW of this epicentre
  2. 5.5 California-Nevada border region · 42 km NE of this epicentre
  3. 5.2 23 km S of Walker, California · 44 km S of this epicentre
  4. 5.1 10 km SE of South Lake Tahoe, California · 42 km WNW of this epicentre
  5. 5.1 8 km ESE of Mesa Vista, California · 22 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 38.6928, -119.4734. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Douglas County, NV 26 km (16 mi) NNW earthquakes near Douglas County
Alpine County, CA 29 km (18 mi) WSW earthquakes near Alpine County
Lyon County, NV 44 km (27 mi) NNE earthquakes near Lyon County
Carson City, NV 56 km (35 mi) NNW earthquakes near Carson City
Storey County, NV 83 km (52 mi) N earthquakes near Storey County
Tuolumne County, CA 86 km (53 mi) SSW earthquakes near Tuolumne County

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

Aftershocks so far

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

  1. 1.6 4 km S of Topaz Lake, Nevada
  2. 2.4 18km E of Markleeville, CA
  3. 1.6 2 km WSW of Topaz Lake, Nevada
  4. 1.5 11 km WSW of Topaz, California
  5. 2.4 12km NNW of Bridgeport, CA
  6. 1.6 16 km WSW of Schurz, Nevada
  7. 1.8 10km WNW of Bridgeport, CA
  8. 1.6 8 km E of Topaz, California
  9. 2.1 23km NE of Dardanelle, CA
  10. 1.8 10 km NW of Topaz Lake, Nevada
  11. 1.7 5 km ESE of Topaz Lake, Nevada
  12. 2.3 20km E of Markleeville, CA
  13. 2.7 21km E of Markleeville, CA
  14. 1.5 2 km S of Topaz Lake, Nevada
  15. 3.0 21km SW of Smith Valley, NV

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.