Earthquake · reviewed by a seismologist
M 2.4md
Earthquake near Redding, CA
No earthquake was likely felt in Redding in the 24 hours to 3:11 am PST (11:11 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 2.4 earthquake was recorded 49 km (30 mi) east-southeast of Redding, CA, at 5:39 am PDT on 20 March 2022 (12:39 UTC), 11 km deep.
USGS: 3km S of Manton, CA
71 km (44 mi) N of Chico, CA · 46 km (29 mi) ESE of Redding, CA
- When
- 5:39 am PDT on 20 March 2022 ()
- Where
- 49 km (30 mi) east-southeast of Redding, CA · earthquakes near Redding
- Magnitude
- M 2.4 (md)
- Depth
- 11 km below the surface
- Felt
- no reports yet
- Nearest
- Tehama County, 43 km SW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1695 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 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 19 km (12 mi) from the epicentre. In Redding, 49 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: Shingletown 11 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 130 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.
- Mineral, Virginia 2011 M 5.8 120,000× the energy of this one
- Magna, Utah 2020 M 5.7 83,000× the energy of this one
- Around the size people start to feel M 3.0 7.4× the energy of this one
- This earthquake M 2.4 about 130 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 one earthquake of M5 or more within 50 km:
- 5.5 15 km NE of Mineral, California · 35 km E 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 40.3933, -121.8700. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Tehama County, CA | 43 km (27 mi) | SW | earthquakes near Tehama County |
| Shasta County, CA | 43 km (27 mi) | NNW | earthquakes near Shasta County |
| Butte County, CA | 84 km (52 mi) | SSE | earthquakes near Butte County |
| Glenn County, CA | 99 km (61 mi) | SSW | earthquakes near Glenn County |
| Plumas County, CA | 99 km (62 mi) | ESE | earthquakes near Plumas County |
| Trinity County, CA | 109 km (68 mi) | WNW | earthquakes near Trinity County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
52 earthquakes have been recorded within 50 km since this one.
- 2.1 10km WNW of Chester, CA
- 1.8 18km NNE of Red Bluff, CA
- 1.7 4km N of Viola, CA
- 1.8 18km NW of Viola, CA
- 1.9 14km NNE of Mineral, CA
- 1.6 8km NNW of Bella Vista, CA
- 2.0 24km SSE of Burney, CA
- 1.7 11km SE of Millville, CA
- 1.8 7km NNW of Bella Vista, CA
- 1.8 8km NNW of Bella Vista, CA
- 2.3 16km N of Shingletown, CA
- 1.8 7km NNW of Bella Vista, CA
- 1.5 7km NNW of Bella Vista, CA
- 2.1 7km NNW of Bella Vista, CA
- 1.7 7km NNW 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.