QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

15 km NNE of Big Bend, CA

· 9.8 km deep · released about 26 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 45 kmSiskiyou County 73 kmModoc County 109 kmLassen County 116 kmTehama County 118 kmTrinity County 118 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 2.0 (md)
Depth
9.8 km below the surface
Felt
no reports yet
Nearest
Shasta County, 45 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 563 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 26 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 580,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 410,000× the energy of this one
  3. Around the size people start to feel M 3.0 36× the energy of this one
  4. This earthquake M 2.0 about 26 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 41.1492, -121.8778. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 45 km (28 mi) NNE of here earthquakes near Shasta County
Siskiyou County, CA 73 km (46 mi) SE of here earthquakes near Siskiyou County
Modoc County, CA 109 km (67 mi) WSW of here earthquakes near Modoc County
Lassen County, CA 116 km (72 mi) WNW of here earthquakes near Lassen County
Tehama County, CA 118 km (73 mi) NNE of here earthquakes near Tehama County
Trinity County, CA 118 km (73 mi) ENE of here earthquakes near Trinity County

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

Aftershocks so far

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

  1. 2.1 13 km N of McCloud, CA
  2. 1.6 25 km NW of McArthur, CA
  3. 2.0 24 km WSW of Big Bend, CA
  4. 1.7 13 km NNE of McCloud, CA
  5. 1.9 3 km WNW of Mount Shasta, CA
  6. 2.6 11 km ESE of Burney, CA
  7. 2.0 4 km S of Burney, CA
  8. 2.2 4 km S of Burney, CA
  9. 1.9 4 km S of Burney, CA
  10. 2.0 30 km N of Shasta Lake, CA
  11. 1.8 15 km W of Round Mountain, CA
  12. 1.8 15 km NW of Big Bend, CA
  13. 2.1 10 km N of Burney, CA
  14. 2.2 10 km NE of Burney, CA
  15. 1.6 15 km WSW of Round Mountain, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.0 on 2023-09-08 — it released about 35,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

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