QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

15km WNW of Fall River Mills, CA

· 14 km deep · released about 290 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 50 kmLassen County 92 kmModoc County 95 kmSiskiyou County 97 kmTehama County 117 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 2.7 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Shasta County, 50 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2634 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 290 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 51,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 36,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.2× the energy of this one
  4. This earthquake M 2.7 about 290 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 41.0658, -121.6063. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Shasta County, CA 50 km (31 mi) NE of here earthquakes near Shasta County
Lassen County, CA 92 km (57 mi) WNW of here earthquakes near Lassen County
Modoc County, CA 95 km (59 mi) SW of here earthquakes near Modoc County
Siskiyou County, CA 97 km (60 mi) SE of here earthquakes near Siskiyou County
Tehama County, CA 117 km (73 mi) NNE of here earthquakes near Tehama County
Plumas County, CA 136 km (85 mi) NNW of here earthquakes near Plumas County

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

Aftershocks so far

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

  1. 1.9 17km NNW of Viola, CA
  2. 1.8 15km N of Burney, CA
  3. 1.6 11km WNW of Burney, CA
  4. 1.6 10km WNW of Burney, CA
  5. 2.2 16km SE of McCloud, CA
  6. 1.6 10km SSE of Burney, CA
  7. 1.7 8km NW of Montgomery Creek, CA
  8. 1.8 20km SE of Burney, CA
  9. 2.0 27km SE of Burney, CA
  10. 2.5 21km SE of Burney, CA
  11. 2.1 21km SE of Burney, CA
  12. 2.0 21km SE of Burney, CA
  13. 1.8 22km SE of Burney, CA
  14. 1.8 24km SE of Burney, CA
  15. 1.6 22km SE of Burney, 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.