Earthquake · reviewed by a seismologist
M 2.7md
Earthquake near Redding, CA
No earthquake was likely felt in Redding in the 24 hours to 1:30 pm PST (21:30 UTC). The last one was M 2.3, 5 km (3 mi) SW, at 4:06 pm PDT on 4 October 2026, estimated intensity II (weak) in town. Every earthquake near Redding
This page: a magnitude 2.7 earthquake was recorded 47 km (29 mi) south-southwest of Redding, CA, at 3:24 pm PDT on 22 September 2022 (22:24 UTC), 8.3 km deep. 1 person has reported feeling it to USGS.
USGS: 31km NW of Rancho Tehama Reserve, CA
88 km (54 mi) NW of Chico, CA · 46 km (29 mi) SSW of Redding, CA
- When
- 3:24 pm PDT on 22 September 2022 ()
- Where
- 47 km (29 mi) south-southwest of Redding, CA · earthquakes near Redding
- Magnitude
- M 2.7 (md)
- Depth
- 8.3 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Tehama County, 37 km ESE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1448 days ago
Earthquake alerts for Redding, 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 small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 24 km (15 mi) from the epicentre. In Redding, 47 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.
How big was it?
This earthquake released about 390 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 39,000× the energy of this one
- Magna, Utah 2020 M 5.7 28,000× the energy of this one
- Around the size people start to feel M 3.0 2.5× the energy of this one
- This earthquake M 2.7 about 390 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:
- 5.5 33 km NW of Rancho Tehama Reserve, California · 5 km WSW of this epicentre
- 5.1 7km NW of Redding, CA · 50 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 40.2178, -122.6548. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Tehama County, CA | 37 km (23 mi) | ESE | earthquakes near Tehama County |
| Trinity County, CA | 62 km (38 mi) | NW | earthquakes near Trinity County |
| Glenn County, CA | 72 km (45 mi) | SSE | earthquakes near Glenn County |
| Shasta County, CA | 79 km (49 mi) | NE | earthquakes near Shasta County |
| Butte County, CA | 109 km (68 mi) | SE | earthquakes near Butte County |
| Mendocino County, CA | 110 km (69 mi) | SW | earthquakes near Mendocino County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
35 earthquakes have been recorded within 50 km since this one.
- 1.9 4 km E of Redding, CA
- 2.3 13 km NNE of Red Bluff, CA
- 2.4 14 km NNE of Red Bluff, CA
- 2.5 18 km N of Alder Springs, CA
- 2.4 18 km WSW of Shasta, CA
- 1.5 34 km NE of Covelo, CA
- 2.5 40 km NNE of Covelo, CA
- 1.8 19 km SW of Shasta, CA
- 2.1 19 km SW of Shasta, CA
- 2.6 15 km SE of Anderson, CA
- 1.8 32 km WNW of Rancho Tehama Reserve, CA
- 2.0 38km W of Rancho Tehama Reserve, CA
- 1.9 40km W of Rancho Tehama Reserve, CA
- 2.3 26km ENE of Covelo, CA
- 2.1 26km ENE of Covelo, 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.