QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

10km NNE of Shasta Lake, CA

· 17 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 23 kmTrinity County 68 kmTehama County 71 kmSiskiyou County 94 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, 23 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3152 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 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 40.7600, -122.3162. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 23 km (14 mi) W of here earthquakes near Shasta County
Trinity County, CA 68 km (43 mi) E of here earthquakes near Trinity County
Tehama County, CA 71 km (44 mi) N of here earthquakes near Tehama County
Siskiyou County, CA 94 km (58 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

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

  1. 1.9 21km SSW of Dunsmuir, CA
  2. 1.5 21km SSW of Dunsmuir, CA
  3. 1.7 12km WSW of Shingletown, CA
  4. 1.8 1km SW of Palo Cedro, CA
  5. 1.9 2km SSE of Palo Cedro, CA
  6. 1.5 20km WSW of Manton, CA
  7. 1.6 1km SSW of Palo Cedro, CA
  8. 1.7 9km NNE of Shasta Lake, CA
  9. 1.6 1km NNW of Shasta Lake, CA
  10. 1.6 24km N of Shasta Lake, CA
  11. 1.6 17km SE of Anderson, CA
  12. 1.7 11km NNE of Shingletown, CA
  13. 1.6 12km NNE of Shingletown, CA
  14. 1.9 4km WSW of Bella Vista, CA
  15. 2.8 6km WSW of Bella Vista, 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.