QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

Earthquake near Tonopah, NV

No earthquake was likely felt in Tonopah in the 24 hours to 2:21 pm PST (22:21 UTC). The last one was M 3.8, 55 km (34 mi) W, at 1:52 am PDT on 25 May 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near Tonopah

This page: a magnitude 2.0 earthquake was recorded 49 km (31 mi) west-northwest of Tonopah, NV, at 6:04 pm PDT on 21 April 2023 (01:04 UTC), 12 km deep.

USGS: Nevada

6:04 pm PDT, Apr 21, 2023 · · 12 km deep · released about 30 lb of TNT

Every earthquake near Tonopah Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Esmeralda County 46 kmMineral County 67 kmMono County 101 kmNye County 118 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
6:04 pm PDT on 21 April 2023 ()
Where
49 km (31 mi) west-northwest of Tonopah, NV · earthquakes near Tonopah
Magnitude
M 2.0 (ml)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Esmeralda County, 46 km SSE
Nearest mapped fault
Benton Spring fault, 18 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 1298 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 Tonopah, 49 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 30 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 350,000× the energy of this one
  3. Around the size people start to feel M 3.0 32× the energy of this one
  4. This earthquake M 2.0 about 30 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 5,600,000 times the energy of this one.

Before 2016, the USGS record lists 16 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.8 The 1932 Cedar Mountain, Nevada Earthquake · 50 km NNW of this epicentre
  2. 6.1 Near Tonopah Junction, Nevada · 28 km SW of this epicentre
  3. 5.6 37 km N of Dyer, Nevada · 33 km SW of this epicentre
  4. 5.5 Near Tonopah Junction, Nevada · 28 km SW of this epicentre
  5. 5.5 Near Tonopah Junction, Nevada · 28 km SW 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 38.1783, -117.7757. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Esmeralda County, NV 46 km (29 mi) SSE earthquakes near Esmeralda County
Mineral County, NV 67 km (42 mi) NW earthquakes near Mineral County
Mono County, CA 101 km (63 mi) WSW earthquakes near Mono County
Nye County, NV 118 km (73 mi) E earthquakes near Nye County

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

Aftershocks so far

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

  1. 2.2 31 km SSE of Mina, Nevada
  2. 2.6 31 km SSE of Mina, Nevada
  3. 1.5 32 km S of Mina, Nevada
  4. 1.7 30 km SSE of Mina, Nevada
  5. 1.7 32 km SE of Mina, Nevada
  6. 1.5 29 km SSW of Mina, Nevada
  7. 1.6 30 km SSE of Mina, Nevada
  8. 3.2 31 km SSE of Mina, Nevada
  9. 2.1 31 km SE of Mina, Nevada
  10. 1.5 21 km WSW of Tonopah, Nevada
  11. 1.5 36 km SE of Mina, Nevada
  12. 1.7 33 km S of Mina, Nevada
  13. 1.6 33 km SE of Mina, Nevada
  14. 1.7 31 km SE of Mina, Nevada
  15. 1.6 34 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.