QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

10km S of Shasta, CA

· 8.5 km deep · released about 9.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 46 kmTehama County 48 kmTrinity County 56 kmGlenn County 101 kmButte County 120 kmSiskiyou 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 1.7 (md)
Depth
8.5 km below the surface
Felt
no reports yet
Nearest
Shasta County, 46 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2848 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 9.6 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 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 99× the energy of this one
  4. This earthquake M 1.7 about 9.6 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 40.5115, -122.4748. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 46 km (28 mi) SW of here earthquakes near Shasta County
Tehama County, CA 48 km (30 mi) NNW of here earthquakes near Tehama County
Trinity County, CA 56 km (35 mi) ESE of here earthquakes near Trinity County
Glenn County, CA 101 km (63 mi) N of here earthquakes near Glenn County
Butte County, CA 120 km (74 mi) NW of here earthquakes near Butte County
Siskiyou County, CA 120 km (74 mi) S of here earthquakes near Siskiyou County

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

Aftershocks so far

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

  1. 1.7 6km NE of Shasta Lake, CA
  2. 1.5 9km NNE of Shasta Lake, CA
  3. 1.6 20km NE of Red Bluff, CA
  4. 1.6 3km SW of Shasta Lake, CA
  5. 1.8 20km NE of Red Bluff, CA
  6. 1.6 17km NNW of Shingletown, CA
  7. 2.0 20km NE of Red Bluff, CA
  8. 1.8 20km NE of Red Bluff, CA
  9. 2.6 10km ENE of Red Bluff, CA
  10. 2.0 18km ENE of Red Bluff, CA
  11. 1.6 14km NNE of French Gulch, CA
  12. 1.7 13km NNE of French Gulch, CA
  13. 1.8 9km NNE of Shasta Lake, CA
  14. 1.8 17km NNE of Bella Vista, CA
  15. 1.6 26km NNE 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

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