QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

7 km S of McCloud, California

· 6.3 km deep · released about 5.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 48 kmSiskiyou County 55 kmTrinity County 102 kmTehama County 119 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
6.3 km below the surface
Felt
no reports yet
Nearest
Shasta County, 48 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3331 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 41.1902, -122.1393. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 48 km (30 mi) N of here earthquakes near Shasta County
Siskiyou County, CA 55 km (34 mi) SE of here earthquakes near Siskiyou County
Trinity County, CA 102 km (63 mi) NE of here earthquakes near Trinity County
Tehama County, CA 119 km (74 mi) N of here earthquakes near Tehama County
Modoc County, CA 127 km (79 mi) WSW of here earthquakes near Modoc County

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

Aftershocks so far

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

  1. 2.1 6km NW of Big Bend, CA
  2. 1.6 27km NNE of Shasta Lake, CA
  3. 1.7 17km E of McCloud, CA
  4. 2.1 8km NW of Montgomery Creek, CA
  5. 2.4 28km N of Shasta Lake, CA
  6. 1.6 10km ENE of Mount Shasta, CA
  7. 1.9 21km SSW of Dunsmuir, CA
  8. 1.5 21km SSW of Dunsmuir, CA
  9. 1.6 24km N of Shasta Lake, CA
  10. 1.7 22km SSW of Dunsmuir, CA
  11. 2.0 23km WNW of Montgomery Creek, CA
  12. 2.0 17km NE of Big Bend, CA
  13. 1.7 7km NW of Montgomery Creek, CA
  14. 2.0 6km W of Round Mountain, CA
  15. 1.8 32km SE of Tennant, 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.