QuakeIndex

explosion · reviewed by a seismologist

M 1.7ml

Earthquake near Sparks, NV

No earthquake was likely felt in Sparks in the 24 hours to 6:40 am PST (14:40 UTC). The last one was M 2.3, 11 km (7 mi) WSW, at 11:07 pm PDT on 10 October 2026, estimated intensity II (weak) in town; 7 felt reports to USGS. Every earthquake near Sparks

No: USGS classifies this as a explosion, not an earthquake. A magnitude 1.7 explosion was recorded 10 km (6 mi) east of Sparks, NV, at 3:26 pm PST on 15 November 2018 (23:26 UTC), 4.0 km deep.

USGS: 10 km E of Sparks, Nevada

19 km (12 mi) E of Reno, NV · 8 km (5 mi) ESE of Sparks, NV

3:26 pm PST, Nov 15, 2018 · · 4.0 km deep · released about 11 lb of TNT

10 km30 km60 km120 km N Storey County 15 kmCarson City 45 kmLyon County 69 kmDouglas County 71 kmSierra County 76 kmNevada County 102 kmAlpine County 104 kmPlacer County 108 kmPlumas County 113 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
3:26 pm PST on 15 November 2018 ()
Where
10 km (6 mi) east of Sparks, NV · earthquakes near Sparks
Magnitude
M 1.7 (ml)
Depth
4.0 km below the surface
Felt
no reports yet
Nearest
Storey County, 15 km SE
Nearest mapped fault
Northern Virginia Range fault, 4 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 2920 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 12 km (7 mi) from the epicentre. In Sparks, 10 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.

Likely felt in: Sparks 10 km, intensity II. Estimated for each town centre; each link is that town's own record.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 89× the energy of this one
  4. This earthquake M 1.7 about 11 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 8 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.4 Near Fernley, Nevada · 24 km E of this epicentre
  2. 6.1 22 km SSE of Stagecoach, Nevada · 49 km SSE of this epicentre
  3. 6.0 Near Reno, Nevada · 15 km WSW of this epicentre
  4. 6.0 6 km WNW of Verdi, California · 38 km W of this epicentre
  5. 5.5 7 km N of Wadsworth, Nevada · 33 km ENE 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 39.5460, -119.6317. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Storey County, NV 15 km (9 mi) SE earthquakes near Storey County
Carson City, NV 45 km (28 mi) SSW earthquakes near Carson City
Lyon County, NV 69 km (43 mi) SSE earthquakes near Lyon County
Douglas County, NV 71 km (44 mi) S earthquakes near Douglas County
Sierra County, CA 76 km (47 mi) W earthquakes near Sierra County
Nevada County, CA 102 km (63 mi) WSW earthquakes near Nevada County

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

Aftershocks so far

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

  1. 2.4 5km SE of Chilcoot-Vinton, CA
  2. 1.6 11 km SE of Fernley, Nevada
  3. 1.5 9 km NW of Carson City, Nevada
  4. 1.5 7 km E of Carson City, Nevada
  5. 1.5 11 km NNW of Virginia City, Nevada
  6. 1.6 7 km SE of Fernley, Nevada
  7. 1.7 5 km S of Floriston, California
  8. 1.5 1 km NE of Sun Valley, Nevada
  9. 1.8 1 km NE of Sun Valley, Nevada
  10. 1.7 0 km NNE of Sun Valley, Nevada
  11. 1.6 0 km N of Sun Valley, Nevada
  12. 1.7 0 km NNE of Sun Valley, Nevada
  13. 1.5 0 km NNE of Sun Valley, Nevada
  14. 1.7 13 km SE of Sparks, Nevada
  15. 1.7 3 km S of Floriston, California

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.