QuakeIndex

Earthquake · automatic estimate, may change

M 1.9md

12 km S of Manton, CA

· -0.9 km deep · released about 19 lb of TNT

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10 km30 km60 km120 km N Tehama County 38 kmShasta County 52 kmButte County 76 kmGlenn County 91 kmPlumas County 96 kmTrinity County 112 kmLassen County 114 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
-0.9 km below the surface
Felt
no reports yet
Nearest
Tehama County, 38 km SW
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 360 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 19 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 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 40.3155, -121.8663. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 38 km (23 mi) NE of here earthquakes near Tehama County
Shasta County, CA 52 km (32 mi) SSE of here earthquakes near Shasta County
Butte County, CA 76 km (47 mi) NNW of here earthquakes near Butte County
Glenn County, CA 91 km (57 mi) NNE of here earthquakes near Glenn County
Plumas County, CA 96 km (59 mi) WNW of here earthquakes near Plumas County
Trinity County, CA 112 km (70 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

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

  1. 1.6 10 km NNE of Mineral, CA
  2. 1.9 10 km SW of Manton, CA
  3. 1.6 13 km NE of Mineral, CA
  4. 1.6 3 km NE of Mineral, CA
  5. 1.8 14 km NNW of Viola, CA
  6. 2.0 4 km NNW of Millville, CA
  7. 1.9 2 km N of Millville, CA
  8. 2.1 4 km E of Millville, CA
  9. 1.6 10 km SW of Manton, CA
  10. 2.5 21 km WNW of Belden, CA
  11. 1.8 8 km S of Mineral, CA
  12. 1.8 16 km S of Mineral, CA
  13. 2.1 13 km NNE of Mineral, CA
  14. 1.7 10 km SW of Shingletown, CA
  15. 2.1 19 km ESE of Anderson, 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.