QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

40km NE of Covelo, CA

· 2.5 km deep · released about 69 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tehama County 57 kmGlenn County 61 kmTrinity County 73 kmMendocino County 80 kmLake County 101 kmColusa County 108 kmShasta County 110 kmButte County 116 kmHumboldt 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 2.2 (md)
Depth
2.5 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Tehama County, 57 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3005 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 69 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 220,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 150,000× the energy of this one
  3. Around the size people start to feel M 3.0 14× the energy of this one
  4. This earthquake M 2.2 about 69 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 40.0112, -122.8830. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 57 km (35 mi) WSW of here earthquakes near Tehama County
Glenn County, CA 61 km (38 mi) NW of here earthquakes near Glenn County
Trinity County, CA 73 km (46 mi) SSE of here earthquakes near Trinity County
Mendocino County, CA 80 km (50 mi) NE of here earthquakes near Mendocino County
Lake County, CA 101 km (63 mi) N of here earthquakes near Lake County
Colusa County, CA 108 km (67 mi) NNW of here earthquakes near Colusa County

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

Aftershocks so far

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

  1. 1.8 16km NW of Alder Springs, CA
  2. 1.6 24km W of Rancho Tehama Reserve, CA
  3. 2.6 17km SSE of Hayfork, CA
  4. 2.3 15km NNE of Alder Springs, CA
  5. 2.0 14km NNE of Alder Springs, CA
  6. 2.1 12km N of Alder Springs, CA
  7. 2.0 42km N of Covelo, CA
  8. 1.8 16km NW of Alder Springs, CA
  9. 1.6 30km NE of Covelo, CA
  10. 1.7 30km NE of Covelo, CA
  11. 1.7 36km NNW of Alder Springs, CA
  12. 1.5 14km SE of Covelo, CA
  13. 1.5 24km NNW of Lake Pillsbury, CA
  14. 1.6 23km NNW of Lake Pillsbury, CA
  15. 1.6 34km WNW of Rancho Tehama Reserve, 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.