QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

1km WNW of Palo Cedro, CA

· 16 km deep · released about 5.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 28 kmTehama County 49 kmTrinity County 74 kmGlenn County 108 kmButte County 114 kmSiskiyou County 116 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
16 km below the surface
Felt
no reports yet
Nearest
Shasta County, 28 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3099 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 5.7 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 2,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.7 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 40.5662, -122.2467. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 28 km (17 mi) SW of here earthquakes near Shasta County
Tehama County, CA 49 km (30 mi) N of here earthquakes near Tehama County
Trinity County, CA 74 km (46 mi) E of here earthquakes near Trinity County
Glenn County, CA 108 km (67 mi) N of here earthquakes near Glenn County
Butte County, CA 114 km (71 mi) NNW of here earthquakes near Butte County
Siskiyou County, CA 116 km (72 mi) SSE of here earthquakes near Siskiyou County

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

Aftershocks so far

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

  1. 1.7 8km NNE of Shasta Lake, CA
  2. 1.6 27km NNE of Shasta Lake, CA
  3. 2.1 8km NW of Montgomery Creek, CA
  4. 1.6 6km ESE of Bella Vista, CA
  5. 2.4 28km N of Shasta Lake, CA
  6. 1.7 15km WSW of Shingletown, CA
  7. 1.6 3km NNE of Shasta, CA
  8. 1.7 11km W of Manton, CA
  9. 1.6 9km WNW of Shasta Lake, CA
  10. 1.6 11km WSW of Shingletown, CA
  11. 1.7 12km WSW of Shingletown, CA
  12. 1.8 1km SW of Palo Cedro, CA
  13. 1.9 2km SSE of Palo Cedro, CA
  14. 1.5 20km WSW of Manton, CA
  15. 1.6 1km SSW of Palo Cedro, 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.