QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

6km ENE of Shingletown, CA

· 20 km deep · released about 11 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 33 kmTehama County 55 kmButte County 96 kmPlumas County 103 kmLassen County 104 kmTrinity County 110 kmGlenn County 112 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 1.7 (md)
Depth
20 km below the surface
Felt
no reports yet
Nearest
Shasta County, 33 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2971 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 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.

Where

Epicentre 40.5112, -121.8267. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 33 km (21 mi) SSE of here earthquakes near Shasta County
Tehama County, CA 55 km (34 mi) NE of here earthquakes near Tehama County
Butte County, CA 96 km (60 mi) NNW of here earthquakes near Butte County
Plumas County, CA 103 km (64 mi) NW of here earthquakes near Plumas County
Lassen County, CA 104 km (65 mi) WSW of here earthquakes near Lassen County
Trinity County, CA 110 km (68 mi) E of here earthquakes near Trinity County

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

Aftershocks so far

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

  1. 1.5 16km SW of Manton, CA
  2. 2.2 15km SW of Manton, CA
  3. 2.3 18km NNE of Shingletown, CA
  4. 1.9 18km NNE of Shingletown, CA
  5. 1.7 9km NE of Shasta Lake, CA
  6. 2.8 7km NW of Montgomery Creek, CA
  7. 1.8 8km NNE of Viola, CA
  8. 1.6 14km NNE of Mineral, CA
  9. 1.6 16km W of Manton, CA
  10. 1.7 11km N of Mineral, CA
  11. 2.0 14km SE of Millville, CA
  12. 1.6 20km NE of Red Bluff, CA
  13. 1.8 21km NE of Red Bluff, CA
  14. 2.3 19km NE of Red Bluff, CA
  15. 1.5 17km NE of Red Bluff, 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.

On USGS

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