QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

Earthquake near East Quincy, CA

No earthquake was likely felt in East Quincy in the 24 hours to 4:25 am PST (12:25 UTC). The last one was M 2.3, 6 km (3 mi) N, at 5:11 am PST on 7 November 2026, estimated intensity II (weak) in town. Every earthquake near East Quincy

This page: a magnitude 2.4 earthquake was recorded 14 km (9 mi) north-northeast of East Quincy, CA, at 6:59 pm PDT on 25 May 2019 (01:59 UTC), less than 1 km deep.

USGS: 4km SE of Taylorsville, CA

99 km (62 mi) NW of Reno, NV

6:59 pm PDT, May 25, 2019 · · -0.6 km deep · released about 100 lb of TNT

10 km30 km60 km120 km N Plumas County 6 kmSierra County 58 kmLassen County 76 kmButte County 80 kmNevada County 83 kmYuba County 98 kmPlacer County 110 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
6:59 pm PDT on 25 May 2019 ()
Where
14 km (9 mi) north-northeast of East Quincy, CA · earthquakes near East Quincy
Magnitude
M 2.4 (md)
Depth
-0.6 km below the surface
Felt
no reports yet
Nearest
Plumas County, 6 km S
Nearest mapped fault
Indian Valley fault, 3 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 2725 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 20 km (12 mi) from the epicentre. In East Quincy, 14 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: East Quincy 14 km, intensity II · Greenville 16 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.4× the energy of this one
  4. This earthquake M 2.4 about 100 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 · 26 km NW of this epicentre
  2. 5.2 3 km N of Blairsden, California · 31 km SSE 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 40.0463, -120.8130. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Plumas County, CA 6 km (4 mi) S earthquakes near Plumas County
Sierra County, CA 58 km (36 mi) SSE earthquakes near Sierra County
Lassen County, CA 76 km (47 mi) NNE earthquakes near Lassen County
Butte County, CA 80 km (49 mi) WSW earthquakes near Butte County
Nevada County, CA 83 km (52 mi) S earthquakes near Nevada County
Yuba County, CA 98 km (61 mi) SSW earthquakes near Yuba County

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

Aftershocks so far

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

  1. 1.5 15km ENE of East Shore, CA
  2. 1.7 5km NE of Canyondam, CA
  3. 3.1 5km NE of East Quincy, CA
  4. 1.7 14km SW of Almanor, CA
  5. 1.6 3km SSW of East Shore, CA
  6. 1.5 4km NNW of Almanor, CA
  7. 2.3 4km N of Almanor, CA
  8. 1.8 20km WNW of Susanville, CA
  9. 1.8 3km NNE of Prattville, CA
  10. 1.9 10km N of Spring Garden, CA
  11. 2.3 5km NNE of Little Grass Valley, CA
  12. 2.1 9km NW of Caribou, CA
  13. 2.1 6km S of Bucks Lake, CA
  14. 2.1 8km W of La Porte, CA
  15. 2.8 8km WNW of Lake Davis, 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.