QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

25 km SE of Burney, CA

· 7.0 km deep · released about 25 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 49 kmLassen County 71 kmTehama County 91 kmPlumas County 96 kmButte County 116 kmModoc 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 1.9 (md)
Depth
7.0 km below the surface
Felt
no reports yet
Nearest
Shasta County, 49 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 221 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 25 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 5.8 620,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 440,000× the energy of this one
  3. Around the size people start to feel M 3.0 39× the energy of this one
  4. This earthquake M 1.9 about 25 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 40.7072, -121.4692. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 49 km (30 mi) E of here earthquakes near Shasta County
Lassen County, CA 71 km (44 mi) W of here earthquakes near Lassen County
Tehama County, CA 91 km (57 mi) NE of here earthquakes near Tehama County
Plumas County, CA 96 km (60 mi) NW of here earthquakes near Plumas County
Butte County, CA 116 km (72 mi) N of here earthquakes near Butte County
Modoc County, CA 117 km (73 mi) SSW of here earthquakes near Modoc County

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

Aftershocks so far

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

  1. 2.4 12 km WSW of Chester, CA
  2. 1.5 12 km WSW of Chester, CA
  3. 1.6 9 km ENE of Mineral, CA
  4. 1.7 9 km ENE of Shingletown, CA
  5. 1.6 7 km NNE of Burney, CA
  6. 1.8 17 km ENE of Mineral, CA
  7. 1.6 18 km ENE of Mineral, CA
  8. 1.7 17 km ENE of Mineral, CA
  9. 2.6 11 km ESE of Burney, CA
  10. 1.9 12 km NNE of Chester, CA
  11. 1.8 16 km NNE of Shingletown, CA
  12. 1.8 12 km NNE of Mineral, CA
  13. 1.8 12 km NNE of Mineral, CA
  14. 2.0 4 km S of Burney, CA
  15. 2.2 4 km S of Burney, 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 38,000 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.