QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

4km N of Gerber, CA

· 29 km deep · released about 360 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Tehama County 8 kmGlenn County 59 kmButte County 66 kmShasta County 74 kmColusa County 102 kmTrinity County 103 kmPlumas County 113 kmYuba County 114 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
29 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Tehama County, 8 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2664 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 360 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 42,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 30,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.6× the energy of this one
  4. This earthquake M 2.7 about 360 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 40.0953, -122.1427. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Tehama County, CA 8 km (5 mi) ESE of here earthquakes near Tehama County
Glenn County, CA 59 km (37 mi) NNE of here earthquakes near Glenn County
Butte County, CA 66 km (41 mi) NW of here earthquakes near Butte County
Shasta County, CA 74 km (46 mi) S of here earthquakes near Shasta County
Colusa County, CA 102 km (64 mi) N of here earthquakes near Colusa County
Trinity County, CA 103 km (64 mi) SE of here earthquakes near Trinity County

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

Aftershocks so far

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

  1. 2.1 4km NE of Hamilton City, CA
  2. 1.7 3km NNE of Hamilton City, CA
  3. 1.7 4km NNE of Hamilton City, CA
  4. 2.8 4km N of Hamilton City, CA
  5. 1.9 5km W of Hamilton City, CA
  6. 1.8 1km NNE of Chico, CA
  7. 1.8 6km NNE of Gerber, CA
  8. 1.8 5km SW of Hamilton City, CA
  9. 2.4 6km SW of Hamilton City, CA
  10. 1.6 20km NE of Red Bluff, CA
  11. 1.6 20km NE of Red Bluff, CA
  12. 1.7 18km NE of Red Bluff, CA
  13. 1.6 4km NNE of Hamilton City, CA
  14. 1.9 15km ESE of Anderson, CA
  15. 2.5 17km SE of Anderson, 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.