QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

Earthquake near Redding, CA

No earthquake was likely felt in Redding in the 24 hours to 5:36 am PST (13:36 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 2.8 earthquake was recorded 49 km (30 mi) northeast of Redding, CA, at 9:21 am PST on 9 February 2019 (17:21 UTC), 19 km deep. 6 people have reported feeling it to USGS.

USGS: 7km NW of Montgomery Creek, CA

48 km (30 mi) NE of Redding, CA · 126 km (79 mi) N of Chico, CA

9:21 am PST, Feb 9, 2019 · · 19 km deep · released about 430 lb of TNT

10 km30 km60 km120 km N Shasta County 15 kmTehama County 88 kmSiskiyou County 90 kmTrinity County 99 kmLassen County 116 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
9:21 am PST on 9 February 2019 ()
Where
49 km (30 mi) northeast of Redding, CA · earthquakes near Redding
Magnitude
M 2.8 (md)
Depth
19 km below the surface
Felt
6 reports · strongest reported intensity III
Nearest
Shasta County, 15 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2832 days ago

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 18 km (11 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.

Earthquakes near other towns within 30 km: Burney.

How big was it?

This earthquake released about 430 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 35,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 25,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.2× the energy of this one
  4. This earthquake M 2.8 about 430 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:

  1. 5.1 7km NW of Redding, CA · 47 km SW 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 40.8897, -121.9777. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Shasta County, CA 15 km (10 mi) SSW earthquakes near Shasta County
Tehama County, CA 88 km (54 mi) SSW earthquakes near Tehama County
Siskiyou County, CA 90 km (56 mi) NNW earthquakes near Siskiyou County
Trinity County, CA 99 km (62 mi) WSW earthquakes near Trinity County
Lassen County, CA 116 km (72 mi) E earthquakes near Lassen County
Modoc County, CA 131 km (81 mi) NE earthquakes near Modoc 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.

  1. 2.0 21km SE of Burney, CA
  2. 1.5 9km SE of Dunsmuir, CA
  3. 1.8 22km SE of Burney, CA
  4. 1.8 5km N of McCloud, CA
  5. 1.8 24km SE of Burney, CA
  6. 1.6 22km SE of Burney, CA
  7. 1.9 22km SE of Burney, CA
  8. 2.4 22km SE of Burney, CA
  9. 1.6 22km SE of Burney, CA
  10. 1.7 21km SE of Burney, CA
  11. 1.6 22km SE of Burney, CA
  12. 3.0 21km SE of Burney, CA
  13. 2.4 21km SE of Burney, CA
  14. 1.9 22km SE of Burney, CA
  15. 2.0 8km WSW of Dunsmuir, 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.