QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

Earthquake near Shasta Lake, CA

No earthquake was likely felt in Shasta Lake in the 24 hours to 5:29 am PST (13:29 UTC). The last one was M 4.4, 117 km (73 mi) SW, at 3:21 pm PDT on 5 August 2026, estimated intensity II (weak) in town; 122 felt reports to USGS. Every earthquake near Shasta Lake

This page: a magnitude 2.9 earthquake was recorded 2 km (2 mi) northwest of Shasta Lake, CA, at 4:44 pm PST on 28 February 2024 (00:44 UTC), 24 km deep. 59 people have reported feeling it to USGS.

USGS: 2 km NW of Shasta Lake, CA

14 km (9 mi) N of Redding, CA · 115 km (71 mi) NNW of Chico, CA

4:44 pm PST, Feb 28, 2024 · · 24 km deep · released about 590 lb of TNT

Every earthquake near Shasta Lake Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Shasta County 31 kmTrinity County 61 kmTehama County 65 kmSiskiyou County 100 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
4:44 pm PST on 28 February 2024 ()
Where
2 km (2 mi) northwest of Shasta Lake, CA · earthquakes near Shasta Lake
Magnitude
M 2.9 (md)
Depth
24 km below the surface
Felt
59 reports · strongest reported intensity IV
Nearest
Shasta County, 31 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 503 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 19 km (12 mi) from the epicentre. In Shasta Lake, 2 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: Shasta Lake 2 km, intensity II · Redding 12 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 590 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 26,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 18,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.6× the energy of this one
  4. This earthquake M 2.9 about 590 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 · 8 km SSW 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 40.6932, -122.3948. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Shasta County, CA 31 km (19 mi) ENE earthquakes near Shasta County
Trinity County, CA 61 km (38 mi) W earthquakes near Trinity County
Tehama County, CA 65 km (40 mi) SSE earthquakes near Tehama County
Siskiyou County, CA 100 km (62 mi) N earthquakes near Siskiyou County
Butte County, CA 133 km (82 mi) SSE earthquakes near Butte County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

51 earthquakes have been recorded within 50 km since this one.

  1. 1.6 0 km SE of Shasta Lake, CA
  2. 2.1 18 km SE of Anderson, CA
  3. 2.0 19 km SE of Anderson, CA
  4. 1.5 18 km SE of Anderson, CA
  5. 1.6 9 km NE of Shasta Lake, CA
  6. 2.2 17 km W of Manton, CA
  7. 1.9 11 km NNE of Bella Vista, CA
  8. 2.1 5 km SSW of Shasta, CA
  9. 1.7 16 km S of Round Mountain, CA
  10. 1.7 16 km S of Round Mountain, CA
  11. 1.7 5 km NE of Millville, CA
  12. 2.2 17 km SSE of Millville, CA
  13. 1.7 13 km SE of Anderson, CA
  14. 2.4 10 km NW of Shingletown, CA
  15. 1.8 9 km NE of Shasta Lake, 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.