Earthquake · reviewed by a seismologist
M 1.9md
Earthquake near Topaz Ranch Estates, NV
No earthquake was likely felt in Topaz Ranch Estates in the 24 hours to 7:40 am PST (15:40 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 1.9 earthquake was recorded 47 km (29 mi) south of Topaz Ranch Estates, NV, at 1:04 am PDT on 9 September 2018 (08:04 UTC), 8.5 km deep.
USGS: 23km WNW of Bridgeport, CA
- When
- 1:04 am PDT on 9 September 2018 ()
- Where
- 47 km (29 mi) south of Topaz Ranch Estates, NV · earthquakes near Topaz Ranch Estates
- Magnitude
- M 1.9 (md)
- Depth
- 8.5 km below the surface
- Felt
- no reports yet
- Nearest
- Alpine County, 44 km NW
- Nearest mapped fault
- West Walker River 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 2986 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 12 km (7 mi) from the epicentre. In Topaz Ranch Estates, 47 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 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
- Magna, Utah 2020 M 5.7 560,000× the energy of this one
- Around the size people start to feel M 3.0 50× the energy of this one
- This earthquake M 1.9 about 19 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:
- 5.8 3 km NE of Mono City, California · 43 km SE of this epicentre
- 5.2 23 km S of Walker, California · 2 km SW of this epicentre
- 5.1 23 km E of Bridgeport, California · 45 km E of this epicentre
- 5.1 19 km W of Bridgeport, California · 11 km SSE of this epicentre
- 5.0 Near Coleville, California · 29 km N 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 38.3175, -119.4838. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Alpine County, CA | 44 km (27 mi) | NW | earthquakes near Alpine County |
| Tuolumne County, CA | 53 km (33 mi) | SW | earthquakes near Tuolumne County |
| Douglas County, NV | 66 km (41 mi) | N | earthquakes near Douglas County |
| Mono County, CA | 69 km (43 mi) | SE | earthquakes near Mono County |
| Lyon County, NV | 82 km (51 mi) | NNE | earthquakes near Lyon County |
| Mariposa County, CA | 91 km (56 mi) | SSW | earthquakes near Mariposa County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
44 earthquakes have been recorded within 50 km since this one.
- 1.6 4 km SE of Walker, California
- 1.9 6 km SE of Walker, California
- 1.8 6 km ESE of Walker, California
- 1.9 7km W of Bodie, CA
- 1.5 9 km ESE of Markleeville, California
- 1.6 12 km ENE of Bridgeport, California
- 1.5 5 km ESE of Topaz Lake, Nevada
- 1.6 5 km SSE of Topaz Ranch Estates, Nevada
- 2.3 7km SSW of Markleeville, CA
- 1.9 6 km SSW of Topaz Lake, Nevada
- 1.9 18km W of Bridgeport, CA
- 2.1 12km NNW of Bridgeport, CA
- 3.2 12km NNW of Bridgeport, CA
- 3.5 12km NNW of Bridgeport, CA
- 1.6 8km NE of Lee Vining, 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.