QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

15km SW of Orland, CA

· 29 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 53 kmTehama County 53 kmButte County 61 kmLake County 71 kmSutter County 86 kmYuba County 93 kmMendocino County 100 kmYolo County 113 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
29 km below the surface
Felt
no reports yet
Nearest
Glenn County, 9 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1608 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 39.6493, -122.3110. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Glenn County, CA 9 km (6 mi) NE of here earthquakes near Glenn County
Colusa County, CA 53 km (33 mi) N of here earthquakes near Colusa County
Tehama County, CA 53 km (33 mi) S of here earthquakes near Tehama County
Butte County, CA 61 km (38 mi) W of here earthquakes near Butte County
Lake County, CA 71 km (44 mi) NNE of here earthquakes near Lake County
Sutter County, CA 86 km (53 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

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

  1. 1.9 25 km WSW of Rancho Tehama Reserve, CA
  2. 2.2 7 km ENE of Hamilton City, CA
  3. 2.5 18 km N of Alder Springs, CA
  4. 2.4 18 km E of Willows, CA
  5. 2.6 15 km ENE of Willows, CA
  6. 2.1 18km E of Willows, CA
  7. 2.2 18km E of Willows, CA
  8. 2.1 8km WSW of Durham, CA
  9. 1.9 13km WNW of Alder Springs, CA
  10. 2.3 14km S of Hamilton City, CA
  11. 2.3 30km N of Alder Springs, CA
  12. 1.9 21km W of Rancho Tehama Reserve, CA
  13. 1.9 3km NW of Chico, CA
  14. 2.1 12km NW of Alder Springs, CA
  15. 2.4 11km NW of Alder Springs, 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.