Earthquake · reviewed by a seismologist
M 1.6md
Earthquake near Paradise, CA
No earthquake was likely felt in Paradise in the 24 hours to 1:19 am PST (09:19 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 48 km (30 mi) north-northeast of Paradise, CA, at 8:41 pm PST on 31 December 2018 (04:41 UTC), 2.7 km deep. 1 person has reported feeling it to USGS.
USGS: 18km NNW of Belden, CA
57 km (36 mi) NE of Chico, CA · 145 km (90 mi) WNW of Reno, NV
- When
- 8:41 pm PST on 31 December 2018 ()
- Where
- 48 km (30 mi) north-northeast of Paradise, CA · earthquakes near Paradise
- Magnitude
- M 1.6 (md)
- Depth
- 2.7 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Plumas County, 49 km ESE
- Nearest mapped fault
- Almanor fault, 21 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 2779 days ago
Earthquake alerts for Paradise, CA
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
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 11 km (7 mi) from the epicentre. In Paradise, 48 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 7.1 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.
- Mineral, Virginia 2011 M 5.8 2,100,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,500,000× the energy of this one
- Around the size people start to feel M 3.0 130× the energy of this one
- This earthquake M 1.6 about 7.1 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:
- 5.7 2 km NNE of Canyondam, California · 27 km ENE of this epicentre
- 5.5 15 km NE of Mineral, California · 36 km NNW 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 40.1395, -121.3643. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Plumas County, CA | 49 km (30 mi) | ESE | earthquakes near Plumas County |
| Butte County, CA | 57 km (35 mi) | SSW | earthquakes near Butte County |
| Tehama County, CA | 74 km (46 mi) | W | earthquakes near Tehama County |
| Lassen County, CA | 90 km (56 mi) | NE | earthquakes near Lassen County |
| Shasta County, CA | 90 km (56 mi) | NW | earthquakes near Shasta County |
| Sierra County, CA | 95 km (59 mi) | SE | earthquakes near Sierra County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
56 earthquakes have been recorded within 50 km since this one.
- 2.0 11km W of Chester, CA
- 2.5 11km W of Chester, CA
- 1.9 12km SW of Almanor, CA
- 1.8 23km S of Mineral, CA
- 1.6 18km SSW of Mineral, CA
- 2.1 15km WSW of Chester, CA
- 2.2 15km WSW of Chester, CA
- 2.0 18km SSE of Mineral, CA
- 1.5 2km SW of Canyondam, CA
- 1.7 3km N of Almanor, CA
- 2.8 1km WNW of Twain, CA
- 2.4 4km ESE of Prattville, CA
- 1.6 3km NE of Almanor, CA
- 1.7 10km WSW of Chester, CA
- 1.9 5km WSW of Greenville, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.