QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

16 km NNE of Shingletown, CA

· 14 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 24 kmTehama County 66 kmLassen County 101 kmButte County 109 kmTrinity County 110 kmPlumas County 110 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 1.8 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Shasta County, 24 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 88 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 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 930,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 660,000× the energy of this one
  3. Around the size people start to feel M 3.0 59× the energy of this one
  4. This earthquake M 1.8 about 16 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 40.6300, -121.8168. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 24 km (15 mi) SE of here earthquakes near Shasta County
Tehama County, CA 66 km (41 mi) NNE of here earthquakes near Tehama County
Lassen County, CA 101 km (63 mi) W of here earthquakes near Lassen County
Butte County, CA 109 km (68 mi) N of here earthquakes near Butte County
Trinity County, CA 110 km (68 mi) E of here earthquakes near Trinity County
Plumas County, CA 110 km (68 mi) NW of here earthquakes near Plumas County

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

Aftershocks so far

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

  1. 2.7 22 km SSW of Manton, CA
  2. 1.6 9 km ENE of Mineral, CA
  3. 1.7 9 km ENE of Shingletown, CA
  4. 1.9 4 km ESE of Bella Vista, CA
  5. 1.9 16 km NE of Red Bluff, CA
  6. 1.6 7 km NNE of Burney, CA
  7. 1.7 20 km NNE of Shasta Lake, CA
  8. 2.7 4 km SSE of Anderson, CA
  9. 1.8 17 km ENE of Mineral, CA
  10. 1.6 18 km ENE of Mineral, CA
  11. 1.7 17 km ENE of Mineral, CA
  12. 2.0 24 km WSW of Big Bend, CA
  13. 2.6 11 km ESE of Burney, CA
  14. 1.8 13 km SW of Manton, CA
  15. 1.7 17 km NE of Red Bluff, 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 57,000 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.