Earthquake · reviewed by a seismologist
M 1.5md
Earthquake near Topaz Ranch Estates, NV
No earthquake was likely felt in Topaz Ranch Estates in the 24 hours to 3:31 pm PST (23:31 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 1.5 earthquake was recorded 31 km (19 mi) south of Topaz Ranch Estates, NV, at 6:21 am PDT on 26 October 2021 (13:21 UTC), 5.6 km deep.
USGS: 6km S of Walker, CA
- When
- 6:21 am PDT on 26 October 2021 ()
- Where
- 31 km (19 mi) south of Topaz Ranch Estates, NV · earthquakes near Topaz Ranch Estates
- Magnitude
- M 1.5 (md)
- Depth
- 5.6 km below the surface
- Felt
- no reports yet
- Nearest
- Alpine County, 34 km WNW
- Nearest mapped fault
- Antelope Valley fault, 2 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 1842 days ago
Earthquake alerts for Topaz Ranch Estates, NV
Get a notification in this browser when USGS records an earthquake near Topaz Ranch Estates, NV. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 8 km (5 mi) from the epicentre. In Topaz Ranch Estates, 31 km away, the estimate is intensity I (not felt). 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
- Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
- Around the size people start to feel M 3.0 180× the energy of this one
- This earthquake M 1.5 about 5.4 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 5,600,000 times the energy of this one.
Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:
- 6.1 4 km S of Carter Springs, Nevada · 43 km NNW of this epicentre
- 5.2 23 km S of Walker, California · 17 km S of this epicentre
- 5.1 23 km E of Bridgeport, California · 48 km ESE of this epicentre
- 5.1 19 km W of Bridgeport, California · 26 km S of this epicentre
- 5.1 8 km ESE of Mesa Vista, California · 41 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 38.4558, -119.4762. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Alpine County, CA | 34 km (21 mi) | WNW | earthquakes near Alpine County |
| Douglas County, NV | 51 km (32 mi) | NNW | earthquakes near Douglas County |
| Tuolumne County, CA | 64 km (40 mi) | SW | earthquakes near Tuolumne County |
| Lyon County, NV | 67 km (42 mi) | NNE | earthquakes near Lyon County |
| Mono County, CA | 80 km (50 mi) | SE | earthquakes near Mono County |
| Carson City, NV | 81 km (50 mi) | NNW | earthquakes near Carson City |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
54 earthquakes have been recorded within 50 km since this one.
- 1.5 7km NE of Walker, CA
- 2.2 4km W of Walker, CA
- 1.9 8km E of Walker, CA
- 2.3 6km ESE of Walker, CA
- 1.6 7km ESE of Walker, CA
- 1.8 6km NNE of Walker, CA
- 1.5 6km WSW of Walker, CA
- 2.0 16km WNW of Bridgeport, CA
- 1.6 8km SW of Walker, CA
- 1.7 2km N of Walker, CA
- 1.6 6km WSW of Walker, CA
- 1.5 6km NNE of Walker, CA
- 1.7 4km SW of Walker, CA
- 1.6 5km SW of Walker, CA
- 1.6 5km W of Walker, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.