QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

1km WNW of Stony Gorge Reservoir, CA

· 13 km deep · released about 30 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Glenn County 12 kmColusa County 53 kmLake County 56 kmTehama County 65 kmMendocino County 79 kmButte County 81 kmSutter County 95 kmYuba County 109 kmYolo County 115 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 2.0 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Glenn County, 12 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1835 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 30 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 350,000× the energy of this one
  3. Around the size people start to feel M 3.0 32× the energy of this one
  4. This earthquake M 2.0 about 30 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 39.5900, -122.5442. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Glenn County, CA 12 km (8 mi) W of here earthquakes near Glenn County
Colusa County, CA 53 km (33 mi) NNW of here earthquakes near Colusa County
Lake County, CA 56 km (35 mi) NNE of here earthquakes near Lake County
Tehama County, CA 65 km (41 mi) SSW of here earthquakes near Tehama County
Mendocino County, CA 79 km (49 mi) ENE of here earthquakes near Mendocino County
Butte County, CA 81 km (50 mi) W of here earthquakes near Butte County

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

Aftershocks so far

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

  1. 1.8 16km NE of Upper Lake, CA
  2. 1.7 7km E of Lake Pillsbury, CA
  3. 2.0 21km NW of Alder Springs, CA
  4. 2.2 15km SW of Orland, CA
  5. 2.1 10km W of Willows, CA
  6. 2.0 6km NW of Lake Pillsbury, CA
  7. 1.6 11km W of Lake Pillsbury, CA
  8. 1.9 16km NE of Upper Lake, CA
  9. 1.9 12km W of Alder Springs, CA
  10. 2.6 9km SE of Lake Pillsbury, CA
  11. 1.7 9km N of Lake Pillsbury, CA
  12. 1.8 12km SE of Lake Pillsbury, CA
  13. 2.0 12km SE of Lake Pillsbury, CA
  14. 1.7 6km E of Lake Pillsbury, CA
  15. 1.7 5km E of Lake Pillsbury, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.1 on 2016-08-10 — it released about 43,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.