QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

13km SE of Dunsmuir, CA

· 1.1 km deep · released about 160 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 43 kmSiskiyou County 60 kmTrinity County 97 kmTehama 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 2.5 (md)
Depth
1.1 km below the surface
Felt
no reports yet
Nearest
Shasta County, 43 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1993 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 160 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 95,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 68,000× the energy of this one
  3. Around the size people start to feel M 3.0 6× the energy of this one
  4. This earthquake M 2.5 about 160 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 41.1340, -122.1523. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 43 km (26 mi) NNW of here earthquakes near Shasta County
Siskiyou County, CA 60 km (37 mi) SSE of here earthquakes near Siskiyou County
Trinity County, CA 97 km (60 mi) NE of here earthquakes near Trinity County
Tehama County, CA 112 km (70 mi) N of here earthquakes near Tehama County

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

Aftershocks so far

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

  1. 2.2 4km NNE of McCloud, CA
  2. 1.9 23km N of Shasta Lake, CA
  3. 1.8 3km N of McCloud, CA
  4. 1.6 2km N of McCloud, CA
  5. 1.6 15km W of Round Mountain, CA
  6. 1.6 8km NNW of Bella Vista, CA
  7. 1.8 8km NNW of Bella Vista, CA
  8. 1.7 24km N of Shasta Lake, CA
  9. 1.7 27km N of Shasta Lake, CA
  10. 1.8 23km N of Shasta Lake, CA
  11. 1.9 9km E of Montgomery Creek, CA
  12. 1.7 11km NNE of Bella Vista, CA
  13. 1.6 9km NE of Shasta Lake, CA
  14. 1.8 12km NE of Bella Vista, CA
  15. 2.5 11km NNE 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.