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 3:01 am PST (11:01 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 22 km (14 mi) northeast of Shingletown, CA, at 5:51 pm PST on 16 January 2021 (01:51 UTC), less than 1 km deep.

USGS: 10km N of Viola, CA

95 km (59 mi) N of Chico, CA · 59 km (36 mi) E of Redding, CA

5:51 pm PST, Jan 16, 2021 · · -1.6 km deep · released about 460 lb of TNT

10 km30 km60 km120 km N Shasta County 35 kmTehama County 72 kmLassen County 90 kmPlumas County 100 kmButte County 105 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
5:51 pm PST on 16 January 2021 ()
Where
22 km (14 mi) northeast of Shingletown, CA · earthquakes near Shingletown
Magnitude
M 2.8 (md)
Depth
-1.6 km below the surface
Felt
no reports yet
Nearest
Shasta County, 35 km WNW
Nearest mapped fault
Hat Creek fault, 24 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2056 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 27 km (17 mi) from the epicentre. In Shingletown, 22 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.

Likely felt in: Shingletown 22 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 460 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 33,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 23,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.1× the energy of this one
  4. This earthquake M 2.8 about 460 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 · 25 km SE 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 40.6107, -121.6735. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Shasta County, CA 35 km (22 mi) WNW earthquakes near Shasta County
Tehama County, CA 72 km (45 mi) SW earthquakes near Tehama County
Lassen County, CA 90 km (56 mi) E earthquakes near Lassen County
Plumas County, CA 100 km (62 mi) SE earthquakes near Plumas County
Butte County, CA 105 km (65 mi) S earthquakes near Butte County
Glenn County, CA 128 km (80 mi) SSW earthquakes near Glenn County

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

Aftershocks so far

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

  1. 1.7 12km W of Fall River Mills, CA
  2. 1.8 5km SSE of Mineral, CA
  3. 2.0 18km ESE of Anderson, CA
  4. 1.7 4km SSE of Mineral, CA
  5. 1.6 10km WSW of Round Mountain, CA
  6. 1.7 8km WNW of Chester, CA
  7. 1.5 15km ENE of Mineral, CA
  8. 1.6 14km NNE of Mineral, CA
  9. 1.5 14km N of Shingletown, CA
  10. 1.6 2km E of Palo Cedro, CA
  11. 1.5 6km NNE of Millville, CA
  12. 1.6 5km N of Millville, CA
  13. 1.9 20km NE of Red Bluff, CA
  14. 2.0 18km WNW of Round Mountain, CA
  15. 1.6 9km E of Millville, 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.