QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

5 km SSE of Floriston, California

· 8.6 km deep · released about 60 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Carson City 30 kmStorey County 41 kmSierra County 52 kmDouglas County 60 kmNevada County 68 kmPlacer County 71 kmLyon County 77 kmEl Dorado County 79 kmAlpine County 83 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
Magnitude
M 2.2 (ml)
Depth
8.6 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Carson City, 30 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 717 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 60 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 250,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 180,000× the energy of this one
  3. Around the size people start to feel M 3.0 16× the energy of this one
  4. This earthquake M 2.2 about 60 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.

Where

Epicentre 39.3530, -119.9877. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Carson City, NV 30 km (19 mi) NW of here earthquakes near Carson City
Storey County, NV 41 km (25 mi) WSW of here earthquakes near Storey County
Sierra County, CA 52 km (32 mi) ESE of here earthquakes near Sierra County
Douglas County, NV 60 km (37 mi) NNW of here earthquakes near Douglas County
Nevada County, CA 68 km (42 mi) E of here earthquakes near Nevada County
Placer County, CA 71 km (44 mi) ENE of here earthquakes near Placer 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.

  1. 2.2 9 km ENE of Sparks, Nevada
  2. 1.7 4 km NNE of Dollar Point, CA
  3. 1.8 4 km NNE of Dollar Point, CA
  4. 1.7 4 km WSW of Tahoe Vista, CA
  5. 1.7 3 km WSW of Tahoe Vista, CA
  6. 2.1 6 km SSE of Floriston, California
  7. 1.8 4 km ESE of Truckee, CA
  8. 2.9 14 km SW of Loyalton, CA
  9. 2.3 14 km SW of Loyalton, CA
  10. 2.2 13 km SSW of Loyalton, CA
  11. 2.9 14 km SW of Loyalton, CA
  12. 1.9 13 km NNW of Stagecoach, Nevada
  13. 1.5 5 km SE of Floriston, California
  14. 2.0 13 km NNW of Stagecoach, Nevada
  15. 2.2 4 km NNE of Cold Springs, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.7 on 2021-05-07 — it released about 4,700 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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