QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

28 km W of Paskenta, California

· 5.1 km deep · released about 5.9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Glenn County 50 kmTehama County 63 kmMendocino County 68 kmLake County 85 kmTrinity County 90 kmColusa County 94 kmButte County 112 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 1.5 (md)
Depth
5.1 km below the surface
Felt
no reports yet
Nearest
Glenn County, 50 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3300 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 5.9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,800,000× the energy of this one
  3. Around the size people start to feel M 3.0 160× the energy of this one
  4. This earthquake M 1.5 about 5.9 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 39.8623, -122.8832. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Glenn County, CA 50 km (31 mi) NW of here earthquakes near Glenn County
Tehama County, CA 63 km (39 mi) WSW of here earthquakes near Tehama County
Mendocino County, CA 68 km (42 mi) NE of here earthquakes near Mendocino County
Lake County, CA 85 km (53 mi) N of here earthquakes near Lake County
Trinity County, CA 90 km (56 mi) SSE of here earthquakes near Trinity County
Colusa County, CA 94 km (58 mi) NW of here earthquakes near Colusa County

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

Aftershocks so far

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

  1. 1.9 28km NW of Alder Springs, CA
  2. 2.4 41km NE of Covelo, CA
  3. 1.9 32km NNW of Alder Springs, CA
  4. 2.2 16km WNW of Lake Pillsbury, CA
  5. 1.6 32km NNW of Alder Springs, CA
  6. 2.0 25km W of Alder Springs, CA
  7. 1.8 39km NE of Covelo, CA
  8. 1.6 39km NE of Covelo, CA
  9. 1.7 39km NE of Covelo, CA
  10. 2.8 40km NE of Covelo, CA
  11. 2.5 4km E of Covelo, CA
  12. 1.7 18km NNW of Lake Pillsbury, CA
  13. 1.7 36km NNW of Alder Springs, CA
  14. 1.7 28km NW of Alder Springs, CA
  15. 1.6 24km NNW 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.

On USGS

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