QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

10km S of McCloud, CA

· 2.5 km deep · released about 6.2 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 47 kmSiskiyou County 56 kmTrinity County 100 kmTehama 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
2.5 km below the surface
Felt
no reports yet
Nearest
Shasta County, 47 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2045 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 6.2 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 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 41.1712, -122.1520. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 47 km (29 mi) N of here earthquakes near Shasta County
Siskiyou County, CA 56 km (35 mi) SE of here earthquakes near Siskiyou County
Trinity County, CA 100 km (62 mi) NE of here earthquakes near Trinity County
Tehama County, CA 116 km (72 mi) N of here earthquakes near Tehama 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. 1.9 8km SSE of Tennant, CA
  2. 1.6 10km WNW of Montgomery Creek, CA
  3. 1.7 13km W of Round Mountain, CA
  4. 1.9 4km NNE of McCloud, CA
  5. 2.2 4km NNE of McCloud, CA
  6. 1.9 23km N of Shasta Lake, CA
  7. 1.8 3km N of McCloud, CA
  8. 1.6 2km N of McCloud, CA
  9. 1.6 15km W of Round Mountain, CA
  10. 1.7 24km N of Shasta Lake, CA
  11. 1.7 27km N of Shasta Lake, CA
  12. 1.8 23km N of Shasta Lake, CA
  13. 1.9 9km E of Montgomery Creek, CA
  14. 1.7 11km NNE of Bella Vista, CA
  15. 1.6 9km NE of Shasta Lake, 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.