QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

11 km N of Herlong, California

· 5.6 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washoe County 66 kmPlumas County 67 kmLassen County 67 kmSierra County 82 kmStorey County 104 kmNevada County 120 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 1.5 (ml)
Depth
5.6 km below the surface
Felt
no reports yet
Nearest
Washoe County, 66 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 570 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 40.2505, -120.1174. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Washoe County, NV 66 km (41 mi) SW of here earthquakes near Washoe County
Plumas County, CA 67 km (41 mi) ENE of here earthquakes near Plumas County
Lassen County, CA 67 km (42 mi) SE of here earthquakes near Lassen County
Sierra County, CA 82 km (51 mi) NNE of here earthquakes near Sierra County
Storey County, NV 104 km (64 mi) NNW of here earthquakes near Storey County
Nevada County, CA 120 km (74 mi) NNE of here earthquakes near Nevada County

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

Aftershocks so far

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

  1. 1.5 23 km ENE of Herlong, California
  2. 1.9 20 km E of Herlong, California
  3. 1.8 32 km W of Empire, Nevada
  4. 1.8 33 km W of Gerlach, Nevada
  5. 2.1 16 km NE of Litchfield, California
  6. 2.2 13 km NE of Lake Davis, CA
  7. 2.2 3 km SE of Johnstonville, CA
  8. 1.7 32 km WSW of Gerlach, Nevada
  9. 2.5 21 km NE of Lake Davis, CA
  10. 1.5 13 km NNW of Sutcliffe, Nevada
  11. 2.1 17 km SE of Honey Lake, CA
  12. 1.8 11 km N of Lake Davis, CA
  13. 2.0 12 km NE of Johnstonville, CA
  14. 2.6 11 km of Honey Lake, CA
  15. 1.8 19 km NNW of Sutcliffe, 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 4.5 on 2016-08-04 — it released about 30,000 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.