QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

7km WNW of Willows, CA

· 28 km deep · released about 130 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Glenn County 13 kmColusa County 40 kmButte County 59 kmLake County 63 kmTehama County 65 kmSutter County 74 kmYuba County 85 kmYolo County 101 kmMendocino County 101 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 2.4 (md)
Depth
28 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Glenn County, 13 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1969 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 130 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 120,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 83,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.4× the energy of this one
  4. This earthquake M 2.4 about 130 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 39.5383, -122.2743. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Glenn County, CA 13 km (8 mi) ESE of here earthquakes near Glenn County
Colusa County, CA 40 km (25 mi) N of here earthquakes near Colusa County
Butte County, CA 59 km (37 mi) WSW of here earthquakes near Butte County
Lake County, CA 63 km (39 mi) NE of here earthquakes near Lake County
Tehama County, CA 65 km (41 mi) S of here earthquakes near Tehama County
Sutter County, CA 74 km (46 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

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

  1. 2.0 20km NE of Upper Lake, CA
  2. 1.8 21km NNE of Nice, CA
  3. 1.9 3km NW of Chico, CA
  4. 1.8 8km WSW of Alder Springs, CA
  5. 2.7 2km NW of Chico, CA
  6. 2.1 13km SSE of Willows, CA
  7. 2.6 12km S of Hamilton City, CA
  8. 2.7 5km N of Hamilton City, CA
  9. 2.2 15km SW of Orland, CA
  10. 2.1 10km W of Willows, CA
  11. 1.7 9km W of Williams, CA
  12. 3.7 10km WSW of Williams, CA
  13. 2.1 9km WSW of Williams, CA
  14. 2.0 11km NNW of Chico, CA
  15. 1.7 14km S of Hamilton City, 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.