QuakeIndex

quarry blast · reviewed by a seismologist

M 2.6md

4 km SSW of Cherokee, California

· -0.1 km deep · released about 260 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Butte County 7 kmYuba County 43 kmSutter County 65 kmGlenn County 72 kmColusa County 75 kmPlumas County 76 kmNevada County 77 kmTehama County 81 kmSierra County 89 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 2.6 (md)
Depth
-0.1 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Butte County, 7 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1518 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

USGS catalogues this as quarry blast, not an earthquake.

How big was it?

This earthquake released about 260 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 59,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 42,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.7× the energy of this one
  4. This earthquake M 2.6 about 260 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 39.6143, -121.5650. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Butte County, CA 7 km (4 mi) SSE of here earthquakes near Butte County
Yuba County, CA 43 km (27 mi) NNW of here earthquakes near Yuba County
Sutter County, CA 65 km (41 mi) N of here earthquakes near Sutter County
Glenn County, CA 72 km (45 mi) E of here earthquakes near Glenn County
Colusa County, CA 75 km (47 mi) NE of here earthquakes near Colusa County
Plumas County, CA 76 km (47 mi) WSW of here earthquakes near Plumas County

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

Aftershocks so far

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

  1. 2.0 10km N of Thermalito, CA
  2. 1.9 2 km SSE of South Oroville, California
  3. 2.1 11 km WSW of Biggs, California
  4. 1.8 8 km N of Princeton, California
  5. 1.9 9 km NNW of Thermalito, California
  6. 1.9 Northern California
  7. 2.1 6 km SW of Cherokee, California
  8. 2.2 5 km W of Hamilton City, California
  9. 2.4 3 km SSE of Butte Meadows, California
  10. 2.0 Northern California
  11. 2.0 3 km ESE of Bucks Lake, California
  12. 1.7 13 km W of La Porte, California
  13. 1.8 4 km NW of Dobbins, California
  14. 2.1 5 km SW of Cherokee, California
  15. 1.7 10 km S of Hamilton City, California

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.