QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

27 km WNW of Paskenta, California

· 6.2 km deep · released about 5.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tehama County 54 kmGlenn County 56 kmTrinity County 78 kmMendocino County 80 kmLake County 97 kmColusa County 103 kmShasta County 110 kmButte County 111 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
6.2 km below the surface
Felt
no reports yet
Nearest
Tehama County, 54 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3246 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 5.4 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 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 39.9788, -122.8415. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 54 km (34 mi) WSW of here earthquakes near Tehama County
Glenn County, CA 56 km (35 mi) NW of here earthquakes near Glenn County
Trinity County, CA 78 km (48 mi) SSE of here earthquakes near Trinity County
Mendocino County, CA 80 km (49 mi) NE of here earthquakes near Mendocino County
Lake County, CA 97 km (60 mi) N of here earthquakes near Lake County
Colusa County, CA 103 km (64 mi) NNW of here earthquakes near Colusa County

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

Aftershocks so far

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

  1. 2.2 40km NE of Covelo, CA
  2. 1.8 28km NNW of Alder Springs, CA
  3. 1.6 20km N of Covelo, CA
  4. 1.9 35km WNW of Rancho Tehama Reserve, CA
  5. 1.6 28km WSW of Rancho Tehama Reserve, CA
  6. 1.7 42km NW of Rancho Tehama Reserve, CA
  7. 2.3 15km NW of Alder Springs, CA
  8. 2.9 14km NW of Alder Springs, CA
  9. 1.7 40km NE of Covelo, CA
  10. 2.4 41km NE of Covelo, CA
  11. 2.0 8km NE of Covelo, CA
  12. 1.8 39km NE of Covelo, CA
  13. 1.8 32km NNW of Alder Springs, CA
  14. 1.9 20km SW of Rancho Tehama Reserve, CA
  15. 1.5 9km ESE of Covelo, 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.