Earthquake · reviewed by a seismologist
M 3.4ml
Earthquake near Red Bluff, CA
No earthquake was likely felt in Red Bluff in the 24 hours to 2:59 am PST (10:59 UTC). The last one was M 4.0, 97 km (60 mi) SW, at 5:01 am PDT on 28 October 2026, estimated intensity II (weak) in town; 14 felt reports to USGS. Every earthquake near Red Bluff
This page: a magnitude 3.4 earthquake was recorded 15 km (9 mi) north-northeast of Red Bluff, CA, at 2:49 am PST on 28 November 2024 (10:49 UTC), 24 km deep. 9 people have reported feeling it to USGS.
USGS: 15 km NNE of Red Bluff, CA
68 km (42 mi) NNW of Chico, CA · 33 km (21 mi) SSE of Redding, CA
- When
- 2:49 am PST on 28 November 2024 ()
- Where
- 15 km (9 mi) north-northeast of Red Bluff, CA · earthquakes near Red Bluff
- Magnitude
- M 3.4 (ml)
- Depth
- 24 km below the surface
- Felt
- 9 reports · strongest reported intensity III
- Nearest
- Tehama County, 20 km SSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 232 days ago
Earthquake alerts for Red Bluff, CA
Get a notification in this browser when USGS records an earthquake near Red Bluff, CA. No account or email needed.
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 50 km (31 mi) from the epicentre. In Red Bluff, 15 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: Red Bluff 15 km, intensity II · Anderson 19 km, intensity II · Shingletown 32 km, intensity II · Redding 36 km, intensity II · Rancho Tehama Reserve 37 km, intensity II · Shasta Lake 45 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 1.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 100,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 4,600× the energy of this one
- Magna, Utah 2020 M 5.7 3,200× the energy of this one
- This earthquake M 3.4 about 1.7 tons of TNT
- Around the size people start to feel M 3.0 this one released 3.5× more
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 · 46 km WSW of this epicentre
- 5.1 7km NW of Redding, CA · 41 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 40.3038, -122.1823. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Tehama County, CA | 20 km (13 mi) | SSW | earthquakes near Tehama County |
| Shasta County, CA | 52 km (32 mi) | NNE | earthquakes near Shasta County |
| Glenn County, CA | 80 km (50 mi) | SSW | earthquakes near Glenn County |
| Butte County, CA | 86 km (54 mi) | SE | earthquakes near Butte County |
| Trinity County, CA | 88 km (54 mi) | WNW | earthquakes near Trinity County |
| Plumas County, CA | 121 km (75 mi) | ESE | earthquakes near Plumas 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.
- 2.0 11 km W of Shingletown, CA
- 1.8 9 km E of Anderson, CA
- 2.3 18 km W of Manton, CA
- 1.5 4 km WNW of Shasta Lake, CA
- 2.1 6 km E of Shasta, CA
- 1.8 8 km NE of Shasta Lake, CA
- 1.6 6 km SSE of Millville, CA
- 1.7 8 km NE of Shasta Lake, CA
- 2.4 12 km W of Shingletown, CA
- 1.8 6 km NNE of Shasta Lake, CA
- 1.6 19 km ENE of Red Bluff, CA
- 1.7 8 km NE of Shasta Lake, CA
- 1.6 6 km NNW of Redding, CA
- 1.9 2 km WNW of Shasta Lake, CA
- 2.7 6 km E of Shasta, 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.