QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

Earthquake near Shingletown, CA

No earthquake was likely felt in Shingletown in the 24 hours to 6:09 am PST (14:09 UTC). The last one was M 5.6, 170 km (106 mi) SW, at 8:10 am PDT on 24 June 2026, estimated intensity III (weak) in town; 5,311 felt reports to USGS. Every earthquake near Shingletown

This page: a magnitude 2.8 earthquake was recorded 23 km (14 mi) east of Shingletown, CA, at 11:47 pm PDT on 10 October 2022 (06:47 UTC), 17 km deep. 1 person has reported feeling it to USGS.

USGS: 6km SE of Viola, CA

82 km (51 mi) NNE of Chico, CA

11:47 pm PDT, Oct 10, 2022 · · 17 km deep · released about 400 lb of TNT

10 km30 km60 km120 km N Shasta County 47 kmTehama County 65 kmPlumas County 87 kmLassen County 88 kmButte County 91 kmGlenn 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
11:47 pm PDT on 10 October 2022 ()
Where
23 km (14 mi) east of Shingletown, CA · earthquakes near Shingletown
Magnitude
M 2.8 (md)
Depth
17 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Shasta County, 47 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1426 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 20 km (12 mi) from the epicentre. In Shingletown, 23 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 400 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 38,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 27,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.4× the energy of this one
  4. This earthquake M 2.8 about 400 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.5 15 km NE of Mineral, California · 13 km ESE of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 40.4825, -121.6190. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Shasta County, CA 47 km (29 mi) NW earthquakes near Shasta County
Tehama County, CA 65 km (41 mi) SW earthquakes near Tehama County
Plumas County, CA 87 km (54 mi) SE earthquakes near Plumas County
Lassen County, CA 88 km (55 mi) ENE earthquakes near Lassen County
Butte County, CA 91 km (56 mi) S earthquakes near Butte County
Glenn County, CA 118 km (74 mi) SW earthquakes near Glenn County

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

Aftershocks so far

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

  1. 2.7 2km NE of Almanor, CA
  2. 2.3 2km N of Prattville, CA
  3. 1.9 4km NNE of Prattville, CA
  4. 2.3 2km NE of Almanor, CA
  5. 2.4 2km NE of Almanor, CA
  6. 2.8 2km NNE of Prattville, CA
  7. 3.0 1km N of Prattville, CA
  8. 2.5 1km ENE of Almanor, CA
  9. 2.8 2km NNE of Almanor, CA
  10. 2.4 12km S of Manton, CA
  11. 1.8 14km NE of Mineral, CA
  12. 1.9 4km W of Mineral, CA
  13. 1.8 5km NNE of Montgomery Creek, CA
  14. 2.6 13km S of Manton, CA
  15. 1.8 18km SSE 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.

On USGS

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