QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

Earthquake near Shingletown, CA

No earthquake was likely felt in Shingletown in the 24 hours to 2:40 am PST (10:40 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 1.7 earthquake was recorded 16 km (10 mi) north-northwest of Shingletown, CA, at 7:24 pm PDT on 22 June 2020 (02:24 UTC), 19 km deep.

USGS: 16km NNW of Shingletown, CA

98 km (61 mi) N of Chico, CA · 37 km (23 mi) E of Redding, CA

7:24 pm PDT, Jun 22, 2020 · · 19 km deep · released about 11 lb of TNT

10 km30 km60 km120 km N Shasta County 17 kmTehama County 62 kmTrinity County 99 kmButte County 111 kmLassen County 111 kmSiskiyou County 117 kmPlumas 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
7:24 pm PDT on 22 June 2020 ()
Where
16 km (10 mi) north-northwest of Shingletown, CA · earthquakes near Shingletown
Magnitude
M 1.7 (md)
Depth
19 km below the surface
Felt
no reports yet
Nearest
Shasta County, 17 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2333 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Shingletown, 16 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.

Earthquakes near other towns within 30 km: Bella Vista, Palo Cedro.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 2 earthquakes of M5 or more within 50 km:

  1. 5.5 15 km NE of Mineral, California · 45 km ESE of this epicentre
  2. 5.1 7km NW of Redding, CA · 40 km W 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 40.6333, -121.9372. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Shasta County, CA 17 km (10 mi) NNW earthquakes near Shasta County
Tehama County, CA 62 km (38 mi) SSW earthquakes near Tehama County
Trinity County, CA 99 km (62 mi) W earthquakes near Trinity County
Butte County, CA 111 km (69 mi) SSE earthquakes near Butte County
Lassen County, CA 111 km (69 mi) E earthquakes near Lassen County
Siskiyou County, CA 117 km (73 mi) NNW earthquakes near Siskiyou County

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

Aftershocks so far

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

  1. 1.5 12km W of Shingletown, CA
  2. 3.0 13km W of Shingletown, CA
  3. 1.5 16km NNW of Shingletown, CA
  4. 2.5 13km N of Viola, CA
  5. 1.9 25km N of Shasta Lake, CA
  6. 1.8 13km NNE of Shingletown, CA
  7. 2.3 15km E of Anderson, CA
  8. 1.6 19km NW of Viola, CA
  9. 1.9 2km SSW of Shasta Lake, CA
  10. 1.8 16km NNW of Shingletown, CA
  11. 1.5 7km ENE of Mineral, CA
  12. 1.7 18km ESE of Anderson, CA
  13. 2.8 19km WSW of Manton, CA
  14. 1.6 13km ESE of Millville, CA
  15. 1.7 9km NE of Shasta Lake, 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.