QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Smith Valley, NV

No earthquake was likely felt in Smith Valley in the 24 hours to 4:24 pm PST (00:24 UTC). The last one was M 2.0, 7 km (4 mi) SSW, at 5:40 am PDT on 9 September 2026, estimated intensity II (weak) in town. Every earthquake near Smith Valley

This page: a magnitude 1.8 earthquake was recorded 24 km (15 mi) southeast of Smith Valley, NV, at 1:23 am PDT on 6 April 2019 (08:23 UTC), 11 km deep.

USGS: California-Nevada border region

1:23 am PDT, Apr 6, 2019 · · 11 km deep · released about 15 lb of TNT

10 km30 km60 km120 km N Lyon County 41 kmDouglas County 50 kmAlpine County 59 kmMineral County 63 kmCarson City 77 kmMono County 86 kmStorey County 93 kmTuolumne County 102 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
1:23 am PDT on 6 April 2019 ()
Where
24 km (15 mi) southeast of Smith Valley, NV · earthquakes near Smith Valley
Magnitude
M 1.8 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Lyon County, 41 km N
Nearest mapped fault
Smith Valley fault, 10 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 2777 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 8 km (5 mi) from the epicentre. In Smith Valley, 24 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.

Earthquakes near other towns within 30 km: Smith.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 in our catalogue was M 5.6 on 2016-12-28 — about 500,000 times the energy of this one.

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 38.6623, -119.1213. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lyon County, NV 41 km (25 mi) N earthquakes near Lyon County
Douglas County, NV 50 km (31 mi) WNW earthquakes near Douglas County
Alpine County, CA 59 km (37 mi) W earthquakes near Alpine County
Mineral County, NV 63 km (39 mi) ESE earthquakes near Mineral County
Carson City, NV 77 km (48 mi) NW earthquakes near Carson City
Mono County, CA 86 km (53 mi) SSE earthquakes near Mono County

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

Aftershocks so far

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

  1. 1.5 5 km ESE of Topaz Lake, Nevada
  2. 1.6 28 km WSW of Hawthorne, Nevada
  3. 1.6 5 km SSE of Topaz Ranch Estates, Nevada
  4. 1.9 6 km SSW of Topaz Lake, Nevada
  5. 1.5 30 km ENE of Bridgeport, California
  6. 2.0 14 km ENE of Walker Lake, Nevada
  7. 1.5 10 km NW of Schurz, Nevada
  8. 2.1 12km NNW of Bridgeport, CA
  9. 3.2 12km NNW of Bridgeport, CA
  10. 3.5 12km NNW of Bridgeport, CA
  11. 2.9 29 km WSW of Hawthorne, Nevada
  12. 1.7 California-Nevada border region
  13. 1.6 18 km SW of Hawthorne, Nevada
  14. 2.5 9 km W of Walker Lake, Nevada
  15. 2.1 29 km SW of Hawthorne, 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.