QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

Earthquake near Paradise, CA

No earthquake was likely felt in Paradise in the 24 hours to 5:11 pm PST (01:11 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 1.6 earthquake was recorded 47 km (29 mi) north of Paradise, CA, at 6:52 pm PDT on 30 August 2018 (01:52 UTC), 8.9 km deep.

USGS: 20km S of Mineral, CA

52 km (32 mi) NNE of Chico, CA

6:52 pm PDT, Aug 30, 2018 · · 8.9 km deep · released about 7.8 lb of TNT

10 km30 km60 km120 km N Butte County 57 kmTehama County 58 kmPlumas County 65 kmShasta County 77 kmGlenn County 97 kmLassen County 99 kmYuba County 102 kmSierra County 110 kmNevada 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
6:52 pm PDT on 30 August 2018 ()
Where
47 km (29 mi) north of Paradise, CA · earthquakes near Paradise
Magnitude
M 1.6 (md)
Depth
8.9 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 2997 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 7 km (4 mi) from the epicentre. In Paradise, 47 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.

How big was it?

This earthquake released about 7.8 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,900,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 120× the energy of this one
  4. This earthquake M 1.6 about 7.8 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 · 42 km E of this epicentre
  2. 5.5 15 km NE of Mineral, California · 31 km NNE 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 40.1750, -121.5480. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Butte County, CA 57 km (35 mi) S earthquakes near Butte County
Tehama County, CA 58 km (36 mi) W earthquakes near Tehama County
Plumas County, CA 65 km (40 mi) ESE earthquakes near Plumas County
Shasta County, CA 77 km (48 mi) NNW earthquakes near Shasta County
Glenn County, CA 97 km (60 mi) SW earthquakes near Glenn County
Lassen County, CA 99 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. 1.5 4km WSW of Hamilton Branch, CA
  2. 2.2 2km ENE of Belden, CA
  3. 1.5 2km SW of Canyondam, CA
  4. 1.5 14km NNE of Hamilton Branch, CA
  5. 1.6 1km WSW of Almanor, CA
  6. 1.6 4 km SSW of Canyondam, California
  7. 1.5 20km NE of Red Bluff, CA
  8. 2.6 10km SW of Shingletown, CA
  9. 2.0 6km SSW of Canyondam, CA
  10. 1.6 4km W of Almanor, CA
  11. 2.1 13km WSW of Chester, CA
  12. 1.9 2km WNW of East Shore, CA
  13. 1.9 4km SW of East Shore, CA
  14. 1.5 16km SW of Manton, CA
  15. 2.2 15km SW of Manton, 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.