QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

8 km NE of Big Bend, CA

· 14 km deep · released about 28 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 38 kmSiskiyou County 82 kmTehama County 109 kmLassen County 109 kmModoc County 111 kmTrinity County 117 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 2.0 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Shasta County, 38 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 895 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 28 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 540,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 380,000× the energy of this one
  3. Around the size people start to feel M 3.0 34× the energy of this one
  4. This earthquake M 2.0 about 28 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 41.0632, -121.8390. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 38 km (23 mi) NNE of here earthquakes near Shasta County
Siskiyou County, CA 82 km (51 mi) SE of here earthquakes near Siskiyou County
Tehama County, CA 109 km (68 mi) NNE of here earthquakes near Tehama County
Lassen County, CA 109 km (68 mi) WNW of here earthquakes near Lassen County
Modoc County, CA 111 km (69 mi) WSW of here earthquakes near Modoc County
Trinity County, CA 117 km (73 mi) ENE of here earthquakes near Trinity County

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

Aftershocks so far

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

  1. 1.6 21 km SSE of Burney, CA
  2. 2.0 15 km NNE of Big Bend, CA
  3. 2.3 10 km S of McCloud, CA
  4. 2.3 10 km SSW of McCloud, CA
  5. 1.9 12 km NNE of McCloud, CA
  6. 1.9 7 km ENE of McCloud, CA
  7. 1.6 16 km SE of Dunsmuir, CA
  8. 1.7 18 km NNE of Burney, CA
  9. 2.6 15 km WNW of Round Mountain, CA
  10. 2.1 13 km NNE of McCloud, CA
  11. 1.8 16 km E of McCloud, CA
  12. 1.8 27 km W of Big Bend, CA
  13. 1.8 17 km NNE of Bella Vista, CA
  14. 1.6 21 km NE of Shasta Lake, CA
  15. 1.7 26 km W of Big Bend, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.0 on 2023-09-08 — it released about 33,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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