QuakeIndex

Earthquake · automatic estimate, may change

M 1.9md

9 km NNE of Shingletown, CA

· 17 km deep · released about 25 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 27 kmTehama County 59 kmButte County 102 kmLassen County 105 kmTrinity County 107 kmPlumas County 108 kmGlenn County 117 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 1.9 (md)
Depth
17 km below the surface
Felt
no reports yet
Nearest
Shasta County, 27 km NW
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 331 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 25 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 5.8 600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 420,000× the energy of this one
  3. Around the size people start to feel M 3.0 38× the energy of this one
  4. This earthquake M 1.9 about 25 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 40.5653, -121.8500. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 27 km (17 mi) SE of here earthquakes near Shasta County
Tehama County, CA 59 km (36 mi) NNE of here earthquakes near Tehama County
Butte County, CA 102 km (64 mi) NNW of here earthquakes near Butte County
Lassen County, CA 105 km (65 mi) W of here earthquakes near Lassen County
Trinity County, CA 107 km (67 mi) E of here earthquakes near Trinity County
Plumas County, CA 108 km (67 mi) NW of here earthquakes near Plumas County

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

Aftershocks so far

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

  1. 1.9 15 km NE of Red Bluff, CA
  2. 1.7 16 km ENE of Red Bluff, CA
  3. 2.7 15 km ENE of Red Bluff, CA
  4. 1.7 27 km NE of Viola, CA
  5. 2.3 26 km NE of Viola, CA
  6. 2.2 27 km NE of Viola, CA
  7. 1.9 2 km NNE of Palo Cedro, CA
  8. 2.1 1 km ESE of Palo Cedro, CA
  9. 1.9 2 km ENE of Palo Cedro, CA
  10. 2.5 26 km NE of Viola, CA
  11. 3.4 26 km NE of Viola, CA
  12. 1.9 1 km ENE of Palo Cedro, CA
  13. 1.9 3 km S of Palo Cedro, CA
  14. 1.6 10 km NNE of Mineral, CA
  15. 1.9 10 km SW of Manton, CA

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 5.0 on 2023-09-08 — it released about 36,000 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.