QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

1km N of Shasta, CA

· 9.0 km deep · released about 7.8 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 41 kmTrinity County 53 kmTehama County 58 kmSiskiyou County 109 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 1.6 (md)
Depth
9.0 km below the surface
Felt
no reports yet
Nearest
Shasta County, 41 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2384 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 7.8 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 7.8 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 40.6115, -122.4908. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 41 km (26 mi) WSW of here earthquakes near Shasta County
Trinity County, CA 53 km (33 mi) E of here earthquakes near Trinity County
Tehama County, CA 58 km (36 mi) NNW of here earthquakes near Tehama County
Siskiyou County, CA 109 km (68 mi) S of here earthquakes near Siskiyou County
Glenn County, CA 112 km (70 mi) N of here earthquakes near Glenn County
Butte County, CA 129 km (80 mi) NW of here earthquakes near Butte 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. 2.9 25km N of Shasta Lake, CA
  2. 1.9 13km W of Shingletown, CA
  3. 1.7 29km N of Shasta Lake, CA
  4. 1.7 10km NE of Shasta Lake, CA
  5. 2.2 19km WSW of Manton, CA
  6. 1.8 3km WSW of Shasta Lake, CA
  7. 1.8 9km ESE of Millville, CA
  8. 1.9 21km SE of Anderson, CA
  9. 1.6 23km N of Shasta Lake, CA
  10. 1.9 28km N of Shasta Lake, CA
  11. 1.6 6km WNW of Palo Cedro, CA
  12. 1.5 12km W of Shingletown, CA
  13. 3.0 13km W of Shingletown, CA
  14. 1.5 16km NNW of Shingletown, CA
  15. 2.1 26km N of Shasta Lake, 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

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