QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

14km S of Hamilton City, CA

· 13 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Glenn County 33 kmButte County 36 kmColusa County 52 kmTehama County 60 kmYuba County 69 kmSutter County 70 kmLake County 84 kmYolo County 104 kmPlumas County 110 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 1.7 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Glenn County, 33 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1683 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 10 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 95× the energy of this one
  4. This earthquake M 1.7 about 10 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 39.6142, -122.0170. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Glenn County, CA 33 km (20 mi) E of here earthquakes near Glenn County
Butte County, CA 36 km (22 mi) W of here earthquakes near Butte County
Colusa County, CA 52 km (32 mi) NNE of here earthquakes near Colusa County
Tehama County, CA 60 km (37 mi) SSE of here earthquakes near Tehama County
Yuba County, CA 69 km (43 mi) WNW of here earthquakes near Yuba County
Sutter County, CA 70 km (43 mi) NNW of here earthquakes near Sutter County

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

Aftershocks so far

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

  1. 2.2 21 km NE of Alder Springs, CA
  2. 1.9 19 km E of Willows, CA
  3. 2.4 9 km S of Hamilton City, CA
  4. 1.9 5 km WSW of Concow, CA
  5. 3.1 9 km ENE of Colusa, CA
  6. 3.2 15 km E of Willows, CA
  7. 2.1 16 km ESE of Willows, CA
  8. 2.3 13 km NNW of Chico, CA
  9. 2.8 12 km SSE of Willows, CA
  10. 2.2 3 km SE of Hamilton City, CA
  11. 2.5 15 km ENE of Willows, CA
  12. 2.1 11 km WSW of Durham, CA
  13. 1.9 2 km SSE of Hamilton City, CA
  14. 1.7 18 km N of Stony Gorge Reservoir, CA
  15. 2.5 17 km E 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.