Earthquake · automatic estimate, may change
M 1.9ml
Nevada
Yes. A magnitude 1.9 earthquake was recorded in Nevada, at 10:45 pm PDT on 3 April 2021 (05:45 UTC), 14 km deep. The magnitude and location are an automatic first estimate and may change.
- When
- Magnitude
- M 1.9 (ml)
- Depth
- 14 km below the surface
- Felt
- no reports yet
- Nearest
- Esmeralda County, 51 km SE
- Nearest mapped fault
- Benton Spring fault, 9 km from its surface trace — near is not the same as on
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 2049 days ago
Earthquake alerts for Tonopah, NV
Get a notification in this browser when USGS records an earthquake near Tonopah, 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 5 km (3 mi) from the epicentre. 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 21 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 5.8 710,000× the energy of this one
- Magna, Utah 2020 M 5.7 500,000× the energy of this one
- Around the size people start to feel M 3.0 45× the energy of this one
- This earthquake M 1.9 about 21 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 6.5 on 2020-05-15 — about 7,900,000 times the energy of this one.
Before 2016, the USGS record lists 26 earthquakes of M5 or more within 50 km; the five largest:
- 6.3 The 1934 Excelsior Mountains, Nevada Earthquake · 37 km WNW of this epicentre
- 6.1 Near Tonopah Junction, Nevada · 17 km S of this epicentre
- 5.6 Excelsior Mountains, Nevada (Foreshock) · 41 km WNW of this epicentre
- 5.6 37 km N of Dyer, Nevada · 19 km SSW of this epicentre
- 5.5 Near Tonopah Junction, Nevada · 17 km S 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 38.1478, -117.9750. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Esmeralda County, NV | 51 km (32 mi) | SE | earthquakes near Esmeralda County |
| Mineral County, NV | 56 km (35 mi) | NW | earthquakes near Mineral County |
| Mono County, CA | 83 km (52 mi) | WSW | earthquakes near Mono County |
| Lyon County, NV | 144 km (89 mi) | NW | earthquakes near Lyon 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.
- 2.9 33 km SE of Mina, Nevada
- 1.5 30 km SSE of Mina, Nevada
- 1.7 30 km SSE of Mina, Nevada
- 1.6 32 km SE of Mina, Nevada
- 2.2 34 km SE of Mina, Nevada
- 1.9 36 km SE of Mina, Nevada
- 1.6 34 km N of Dyer, Nevada
- 1.7 35 km N of Dyer, Nevada
- 1.8 29 km SSE of Mina, Nevada
- 1.5 32 km NE of Benton, California
- 2.5 33 km NE of Benton, California
- 1.6 24 km S of Mina, Nevada
- 1.6 25 km S of Mina, Nevada
- 1.5 24 km S of Mina, Nevada
- 1.9 30 km SE of Mina, Nevada
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.