QuakeIndex

Earthquake · automatic estimate, may change

M 1.6md

9km N of Biggs, CA

· 3.4 km deep · released about 7.1 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Butte County 22 kmYuba County 40 kmSutter County 51 kmColusa County 57 kmGlenn County 61 kmNevada County 84 kmTehama County 84 kmYolo County 92 kmPlumas County 94 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 1.6 (md)
Depth
3.4 km below the surface
Felt
no reports yet
Nearest
Butte County, 22 km NNE
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 1924 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 7.1 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.1 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 39.4905, -121.7107. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Butte County, CA 22 km (13 mi) SSW of here earthquakes near Butte County
Yuba County, CA 40 km (25 mi) NW of here earthquakes near Yuba County
Sutter County, CA 51 km (31 mi) N of here earthquakes near Sutter County
Colusa County, CA 57 km (35 mi) NE of here earthquakes near Colusa County
Glenn County, CA 61 km (38 mi) ESE of here earthquakes near Glenn County
Nevada County, CA 84 km (52 mi) WNW of here earthquakes near Nevada County

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

Aftershocks so far

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

  1. 1.7 8 km NNE of Oroville East, CA
  2. 1.8 19 km ESE of Willows, CA
  3. 2.7 14 km E of Willows, CA
  4. 2.1 15 km ESE of Willows, CA
  5. 2.2 5 km ESE of Hamilton City, CA
  6. 2.7 7 km NNE of Hamilton City, CA
  7. 2.4 6 km NNE of Hamilton City, CA
  8. 2.2 6 km NNE of Hamilton City, CA
  9. 3.1 14 km NNE of Maxwell, CA
  10. 2.3 14 km NNE of Maxwell, CA
  11. 2.1 17 km ESE of Willows, CA
  12. 2.1 6 km W of Magalia, CA
  13. 2.3 7 km WNW of Hamilton City, CA
  14. 2.5 8 km E of Orland, CA
  15. 2.7 17 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.