QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

12km SE of Los Molinos, CA

· 16 km deep · released about 18 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tehama County 28 kmButte County 47 kmGlenn County 50 kmColusa County 87 kmShasta County 91 kmYuba County 94 kmPlumas County 102 kmSutter County 104 kmLake County 111 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
16 km below the surface
Felt
no reports yet
Nearest
Tehama County, 28 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2179 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 18 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 5.8 840,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 600,000× the energy of this one
  3. Around the size people start to feel M 3.0 53× the energy of this one
  4. This earthquake M 1.9 about 18 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 39.9380, -122.0207. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 28 km (17 mi) SE of here earthquakes near Tehama County
Butte County, CA 47 km (29 mi) NW of here earthquakes near Butte County
Glenn County, CA 50 km (31 mi) NE of here earthquakes near Glenn County
Colusa County, CA 87 km (54 mi) NNE of here earthquakes near Colusa County
Shasta County, CA 91 km (57 mi) S of here earthquakes near Shasta County
Yuba County, CA 94 km (59 mi) NW of here earthquakes near Yuba County

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

Aftershocks so far

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

  1. 2.9 6km NNE of Hamilton City, CA
  2. 2.5 6km NW of Chico, CA
  3. 2.5 5km NNE of Hamilton City, CA
  4. 1.8 4km NNE of Hamilton City, CA
  5. 1.9 14km S of Hamilton City, CA
  6. 1.6 15km SSW of Mineral, CA
  7. 1.6 15km SSW of Mineral, CA
  8. 2.6 15km E of Willows, CA
  9. 2.6 16km E of Willows, CA
  10. 2.3 16km E of Willows, CA
  11. 2.1 6km N of Hamilton City, CA
  12. 1.8 15km ENE of Willows, CA
  13. 1.8 5km W of Paradise, CA
  14. 2.2 15km E of Willows, CA
  15. 1.8 15km SSW of Hamilton City, 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.