QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

Earthquake near Paradise, CA

No earthquake was likely felt in Paradise in the 24 hours to 3:18 am PST (11:18 UTC). The last one was M 5.6, 145 km (90 mi) WSW, at 8:10 am PDT on 24 June 2026, estimated intensity III (weak) in town; 5,311 felt reports to USGS. Every earthquake near Paradise

This page: a magnitude 1.7 earthquake was recorded 46 km (29 mi) north of Paradise, CA, at 10:59 pm PDT on 9 October 2022 (05:59 UTC), 6.1 km deep.

USGS: 21km S of Mineral, CA

52 km (32 mi) NNE of Chico, CA

10:59 pm PDT, Oct 9, 2022 · · 6.1 km deep · released about 9.3 lb of TNT

10 km30 km60 km120 km N Butte County 57 kmTehama County 60 kmPlumas County 63 kmShasta County 79 kmGlenn County 98 kmLassen County 98 kmYuba County 101 kmSierra County 108 kmNevada 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
10:59 pm PDT on 9 October 2022 ()
Where
46 km (29 mi) north of Paradise, CA · earthquakes near Paradise
Magnitude
M 1.7 (md)
Depth
6.1 km below the surface
Felt
no reports yet
Nearest
Butte County, 57 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1493 days ago

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

At this magnitude and depth, people at rest would likely notice it out to about 10 km (6 mi) from the epicentre. In Paradise, 46 km away, the estimate is intensity I (not felt). 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: Chester.

How big was it?

This earthquake released about 9.3 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 1,600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 100× the energy of this one
  4. This earthquake M 1.7 about 9.3 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. 5.7 2 km NNE of Canyondam, California · 40 km E of this epicentre
  2. 5.5 15 km NE of Mineral, California · 32 km N 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 40.1703, -121.5290. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Butte County, CA 57 km (35 mi) S earthquakes near Butte County
Tehama County, CA 60 km (37 mi) W earthquakes near Tehama County
Plumas County, CA 63 km (39 mi) ESE earthquakes near Plumas County
Shasta County, CA 79 km (49 mi) NNW earthquakes near Shasta County
Glenn County, CA 98 km (61 mi) SW earthquakes near Glenn County
Lassen County, CA 98 km (61 mi) NE earthquakes near Lassen County

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

Aftershocks so far

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

  1. 1.9 4km NNE of Prattville, CA
  2. 2.3 2km NE of Almanor, CA
  3. 2.4 2km NE of Almanor, CA
  4. 2.0 4km ESE of Prattville, CA
  5. 2.8 2km NNE of Prattville, CA
  6. 2.4 4km E of Prattville, CA
  7. 2.1 3km ENE of Prattville, CA
  8. 2.1 4km E of Prattville, CA
  9. 3.0 1km N of Prattville, CA
  10. 2.5 1km ENE of Almanor, CA
  11. 2.6 4km E of Prattville, CA
  12. 2.4 3km E of Prattville, CA
  13. 2.6 3km SSW of East Shore, CA
  14. 2.6 4km E of Prattville, CA
  15. 2.4 4km SW of East Shore, 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.