QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

1 km SSE of Paynes Creek, California

· -0.4 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tehama County 35 kmShasta County 50 kmButte County 77 kmGlenn County 90 kmPlumas County 99 kmTrinity County 108 kmLassen 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 1.8 (md)
Depth
-0.4 km below the surface
Felt
no reports yet
Nearest
Tehama County, 35 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3380 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 5.8 970,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 680,000× the energy of this one
  3. Around the size people start to feel M 3.0 61× 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 40.3190, -121.9088. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 35 km (22 mi) NE of here earthquakes near Tehama County
Shasta County, CA 50 km (31 mi) SSE of here earthquakes near Shasta County
Butte County, CA 77 km (48 mi) NNW of here earthquakes near Butte County
Glenn County, CA 90 km (56 mi) NNE of here earthquakes near Glenn County
Plumas County, CA 99 km (62 mi) WNW of here earthquakes near Plumas County
Trinity County, CA 108 km (67 mi) ESE of here earthquakes near Trinity County

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

Aftershocks so far

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

  1. 1.6 17km ESE of Anderson, CA
  2. 2.6 20km E of Red Bluff, CA
  3. 1.6 12km NNE of Mineral, CA
  4. 2.1 13km SE of Mineral, CA
  5. 2.0 12km NNE of Shingletown, CA
  6. 1.5 19km SE of Round Mountain, CA
  7. 3.2 9km ENE of Gerber, CA
  8. 2.7 12km NW of Viola, CA
  9. 1.8 15km ESE of Anderson, CA
  10. 2.4 7 km SSE of Mineral, California
  11. 1.8 8km S of Mineral, CA
  12. 1.6 3km N of Millville, CA
  13. 2.0 5 km SSW of Millville, California
  14. 2.0 17 km SW of Mineral, California
  15. 1.8 18 km SE of Round Mountain, California

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.