QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

44km NW of Rancho Tehama Reserve, CA

· 11 km deep · released about 29 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Trinity County 51 kmTehama County 51 kmGlenn County 80 kmShasta County 86 kmMendocino County 106 kmHumboldt County 107 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 2.0 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Trinity County, 51 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1513 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 29 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 520,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 370,000× the energy of this one
  3. Around the size people start to feel M 3.0 33× the energy of this one
  4. This earthquake M 2.0 about 29 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 40.2520, -122.8100. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Trinity County, CA 51 km (32 mi) SSE of here earthquakes near Trinity County
Tehama County, CA 51 km (32 mi) WNW of here earthquakes near Tehama County
Glenn County, CA 80 km (50 mi) NNW of here earthquakes near Glenn County
Shasta County, CA 86 km (53 mi) SW of here earthquakes near Shasta County
Mendocino County, CA 106 km (66 mi) NNE of here earthquakes near Mendocino County
Humboldt County, CA 107 km (67 mi) ESE of here earthquakes near Humboldt County

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

Aftershocks so far

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

  1. 2.0 38 km NNW of Alder Springs, CA
  2. 2.5 18 km N of Alder Springs, CA
  3. 2.4 18 km WSW of Shasta, CA
  4. 1.5 34 km NE of Covelo, CA
  5. 2.5 40 km NNE of Covelo, CA
  6. 1.8 19 km SW of Shasta, CA
  7. 2.1 19 km SW of Shasta, CA
  8. 1.8 26 km SSW of Hayfork, CA
  9. 1.8 32 km WNW of Rancho Tehama Reserve, CA
  10. 2.0 38km W of Rancho Tehama Reserve, CA
  11. 1.9 40km W of Rancho Tehama Reserve, CA
  12. 2.3 26km ENE of Covelo, CA
  13. 2.1 26km ENE of Covelo, CA
  14. 2.8 41km NNE of Covelo, CA
  15. 2.1 40km NE of Covelo, 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.