QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

Earthquake near Greenville, CA

No earthquake was likely felt in Greenville in the 24 hours to 11:51 pm PST (07:51 UTC). The last one was M 2.3, 18 km (11 mi) SSE, at 5:11 am PST on 7 November 2026, estimated intensity II (weak) in town. Every earthquake near Greenville

This page: a magnitude 1.5 earthquake was recorded 8 km (5 mi) west of Greenville, CA, at 12:31 pm PST on 2 January 2019 (20:31 UTC), 8.8 km deep.

USGS: 3 km SE of Canyondam, California

12:31 pm PST, Jan 2, 2019 · · 8.8 km deep · released about 5.4 lb of TNT

10 km30 km60 km120 km N Plumas County 25 kmLassen County 72 kmButte County 72 kmSierra County 78 kmNevada County 98 kmTehama County 102 kmYuba County 102 kmShasta County 109 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
12:31 pm PST on 2 January 2019 ()
Where
8 km (5 mi) west of Greenville, CA · earthquakes near Greenville
Magnitude
M 1.5 (ml)
Depth
8.8 km below the surface
Felt
no reports yet
Nearest
Plumas County, 25 km SE
Nearest mapped fault
Almanor fault, 4 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 2871 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 5 km (3 mi) from the epicentre. In Greenville, 8 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: Westwood, Chester, Quincy, East Quincy.

How big was it?

This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 · 5 km NNW of this epicentre
  2. 5.5 15 km NE of Mineral, California · 49 km NW 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 40.1523, -121.0386. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Plumas County, CA 25 km (16 mi) SE earthquakes near Plumas County
Lassen County, CA 72 km (45 mi) NNE earthquakes near Lassen County
Butte County, CA 72 km (45 mi) SW earthquakes near Butte County
Sierra County, CA 78 km (48 mi) SE earthquakes near Sierra County
Nevada County, CA 98 km (61 mi) SSE earthquakes near Nevada County
Tehama County, CA 102 km (63 mi) W earthquakes near Tehama County

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

Aftershocks so far

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

  1. 2.3 10km ESE of Taylorsville, CA
  2. 1.7 10km WSW of Chester, CA
  3. 1.9 5km WSW of Greenville, CA
  4. 1.5 3 km N of Indian Falls, California
  5. 1.9 10km WSW of Chester, CA
  6. 2.4 3km ESE of Janesville, CA
  7. 1.5 4km S of East Shore, CA
  8. 2.3 11km NE of Cromberg, CA
  9. 1.8 1km WNW of Little Grass Valley, CA
  10. 1.8 6km WSW of Belden, CA
  11. 2.6 15km SE of Mineral, CA
  12. 1.8 15km ENE of Mineral, CA
  13. 2.1 16km NW of Chester, CA
  14. 1.9 9km SSE of Mineral, CA
  15. 1.7 16km WSW of Almanor, 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.