Earthquake · reviewed by a seismologist
M 1.7md
Earthquake near Dunsmuir, CA
No earthquake was likely felt in Dunsmuir in the 24 hours to 5:50 am PST (13:50 UTC). The last one was M 1.9, 7 km (5 mi) SSW, at 5:17 pm PDT on 19 October 2026, estimated intensity II (weak) in town. Every earthquake near Dunsmuir
This page: a magnitude 1.7 earthquake was recorded 14 km (8 mi) south of Dunsmuir, CA, at 12:38 am PST on 1 January 2021 (08:38 UTC), 8.6 km deep.
USGS: 14km S of Dunsmuir, CA
58 km (36 mi) N of Redding, CA
- When
- 12:38 am PST on 1 January 2021 ()
- Where
- 14 km (8 mi) south of Dunsmuir, CA · earthquakes near Dunsmuir
- Magnitude
- M 1.7 (md)
- Depth
- 8.6 km below the surface
- Felt
- no reports yet
- Nearest
- Shasta County, 41 km SSE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2136 days ago
Earthquake alerts for Dunsmuir, 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 9 km (6 mi) from the epicentre. In Dunsmuir, 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.
Earthquakes near other towns within 30 km: McCloud, Mount Shasta.
How big was it?
This earthquake released about 10 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.
- Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
- Around the size people start to feel M 3.0 95× the energy of this one
- This earthquake M 1.7 about 10 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 since 1900 lists no earthquake of M5 or more within 50 km.
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 41.0870, -122.2577. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Shasta County, CA | 41 km (25 mi) | SSE | earthquakes near Shasta County |
| Siskiyou County, CA | 60 km (37 mi) | NNW | earthquakes near Siskiyou County |
| Trinity County, CA | 87 km (54 mi) | SW | earthquakes near Trinity County |
| Tehama County, CA | 107 km (66 mi) | S | earthquakes near Tehama County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
59 earthquakes have been recorded within 50 km since this one.
- 1.9 9km E of Montgomery Creek, CA
- 1.7 11km NNE of Bella Vista, CA
- 1.6 9km NE of Shasta Lake, CA
- 1.6 2km WNW of Shasta Lake, CA
- 1.8 12km NE of Bella Vista, CA
- 2.5 11km NNE of Bella Vista, CA
- 1.9 16km SSE of McCloud, CA
- 1.6 19km NE of Big Bend, CA
- 2.1 13km NE of Montgomery Creek, CA
- 1.9 19km SW of Tennant, CA
- 1.6 12km SE of Dunsmuir, CA
- 2.5 13km SE of Dunsmuir, CA
- 2.1 10km NNW of Burney, CA
- 1.7 4km NW of Bella Vista, CA
- 2.1 2km NW of Bella Vista, 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.