QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

Earthquake near Bella Vista, CA

No earthquake was likely felt in Bella Vista in the 24 hours to 5:32 am PST (13:32 UTC). The last one was M 4.4, 124 km (77 mi) WSW, at 3:21 pm PDT on 5 August 2026, estimated intensity II (weak) in town; 122 felt reports to USGS. Every earthquake near Bella Vista

This page: a magnitude 2.8 earthquake was recorded 6 km (4 mi) west-southwest of Bella Vista, CA, at 11:57 pm PDT on 28 July 2018 (06:57 UTC), 28 km deep. 12 people have reported feeling it to USGS.

USGS: 6km WSW of Bella Vista, CA

8 km (5 mi) NE of Redding, CA · 105 km (65 mi) NNW of Chico, CA

11:57 pm PDT, Jul 28, 2018 · · 28 km deep · released about 430 lb of TNT

10 km30 km60 km120 km N Shasta County 26 kmTehama County 56 kmTrinity County 68 kmSiskiyou County 108 kmGlenn County 114 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
11:57 pm PDT on 28 July 2018 ()
Where
6 km (4 mi) west-southwest of Bella Vista, CA · earthquakes near Bella Vista
Magnitude
M 2.8 (md)
Depth
28 km below the surface
Felt
12 reports · strongest reported intensity III
Nearest
Shasta County, 26 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3027 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 it was probably too small to be felt, even directly above it. In Bella Vista, 6 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: Shasta Lake, Redding, Palo Cedro, Shasta, Anderson.

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 · 9 km W 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 40.6290, -122.3052. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Shasta County, CA 26 km (16 mi) ENE earthquakes near Shasta County
Tehama County, CA 56 km (35 mi) S earthquakes near Tehama County
Trinity County, CA 68 km (42 mi) W earthquakes near Trinity County
Siskiyou County, CA 108 km (67 mi) N earthquakes near Siskiyou County
Glenn County, CA 114 km (71 mi) S earthquakes near Glenn County
Butte County, CA 123 km (76 mi) SSE earthquakes near Butte 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. 1.5 16km SW of Manton, CA
  2. 2.2 15km SW of Manton, CA
  3. 2.3 18km NNE of Shingletown, CA
  4. 1.9 18km NNE of Shingletown, CA
  5. 1.7 9km NE of Shasta Lake, CA
  6. 2.8 7km NW of Montgomery Creek, CA
  7. 1.6 16km W of Manton, CA
  8. 1.9 6km ENE of Shasta, CA
  9. 2.0 14km SE of Millville, CA
  10. 1.6 20km NE of Red Bluff, CA
  11. 1.8 21km NE of Red Bluff, CA
  12. 2.3 19km NE of Red Bluff, CA
  13. 1.5 17km NE of Red Bluff, CA
  14. 1.6 9km NNE of Shasta Lake, CA
  15. 1.8 5km WNW 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.