QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

13 km NW of Willows, CA

· 33 km deep · released about 69 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Glenn County 9 kmColusa County 48 kmTehama County 58 kmButte County 59 kmLake County 68 kmSutter County 82 kmYuba County 90 kmMendocino County 101 kmYolo County 109 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
33 km below the surface
Felt
no reports yet
Nearest
Glenn County, 9 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 918 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 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 39.6110, -122.2925. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Glenn County, CA 9 km (6 mi) E of here earthquakes near Glenn County
Colusa County, CA 48 km (30 mi) N of here earthquakes near Colusa County
Tehama County, CA 58 km (36 mi) S of here earthquakes near Tehama County
Butte County, CA 59 km (37 mi) W of here earthquakes near Butte County
Lake County, CA 68 km (42 mi) NE of here earthquakes near Lake County
Sutter County, CA 82 km (51 mi) NW of here earthquakes near Sutter County

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

Aftershocks so far

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

  1. 1.9 16 km E of Lake Pillsbury, CA
  2. 1.5 9 km WNW of Alder Springs, CA
  3. 1.7 18 km N of Stony Gorge Reservoir, CA
  4. 2.5 17 km E of Willows, CA
  5. 2.1 16 km SW of Rancho Tehama Reserve, CA
  6. 1.9 17 km E of Willows, CA
  7. 2.3 16 km ESE of Willows, CA
  8. 1.6 13 km NNW of Alder Springs, CA
  9. 1.8 10 km ESE of Alder Springs, CA
  10. 1.8 19 km ESE of Willows, CA
  11. 2.7 14 km E of Willows, CA
  12. 1.8 5 km SW of Alder Springs, CA
  13. 1.7 5 km SW of Alder Springs, CA
  14. 1.7 10 km W of Alder Springs, CA
  15. 2.1 15 km ESE of Willows, 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.