QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Banning, CA

No earthquake was likely felt in Banning in the 24 hours to 5:39 am PST (13:39 UTC). The last one was M 2.8, 15 km (10 mi) SSW, at 8:30 pm PDT on 14 October 2026, estimated intensity II (weak) in town; 87 felt reports to USGS. Every earthquake near Banning

This page: a magnitude 1.6 earthquake was recorded 5 km (3 mi) south-southwest of Banning, CA, at 11:34 am PST on 4 February 2020 (19:34 UTC), 12 km deep.

USGS: 5km SSW of Banning, CA

6 km (4 mi) E of Beaumont, CA · 141 km (88 mi) E of Los Angeles, CA

11:34 am PST, Feb 4, 2020 · · 12 km deep · released about 6.6 lb of TNT

10 km30 km60 km120 km N Riverside County 84 kmOrange County 85 kmSan Diego County 96 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
11:34 am PST on 4 February 2020 ()
Where
5 km (3 mi) south-southwest of Banning, CA · earthquakes near Banning
Magnitude
M 1.6 (ml)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Riverside County, 84 km ESE
Nearest mapped fault
Beaumont Plain fault, 4 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2472 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. In Banning, 5 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: Beaumont, Cabazon, Cherry Valley, San Jacinto, Valle Vista, East Hemet.

How big was it?

This earthquake released about 6.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,600,000× the energy of this one
  3. Around the size people start to feel M 3.0 140× the energy of this one
  4. This earthquake M 1.6 about 6.6 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

The largest earthquake within 50 km since 2016 was M 4.5 on 2018-05-08 — about 25,000 times the energy of this one.

Before 2016, the USGS record lists 22 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 The 1918 San Jacinto, California Earthquake · 16 km SSW of this epicentre
  2. 6.3 The 1992 Big Bear, California Earthquake · 36 km N of this epicentre
  3. 6.2 3 km SE of San Bernardino, California · 41 km NW of this epicentre
  4. 6.0 The 1986 North Palm Springs, California Earthquake · 29 km ENE of this epicentre
  5. 5.6 7km ENE of Running Springs, CA · 42 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 33.8848, -116.8927. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Riverside County, CA 84 km (52 mi) ESE earthquakes near Riverside County
Orange County, CA 85 km (53 mi) WSW earthquakes near Orange County
San Diego County, CA 96 km (60 mi) S earthquakes near San Diego County
San Bernardino County, CA 126 km (78 mi) NNE earthquakes near San Bernardino County

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

Aftershocks so far

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

  1. 2.4 7km ENE of Yucaipa, CA
  2. 1.8 13km W of Anza, CA
  3. 1.7 8km SSW of Idyllwild, CA
  4. 2.1 5km N of Murrieta, CA
  5. 1.7 3km NE of San Jacinto, CA
  6. 1.9 1km SE of Loma Linda, CA
  7. 1.8 9km SE of Running Springs, CA
  8. 1.9 9km NNE of Banning, CA
  9. 1.6 6km S of Redlands, CA
  10. 2.1 10km WNW of Big Bear Lake, CA
  11. 2.4 9km SW of Morongo Valley, CA
  12. 2.0 2km SSW of San Bernardino, CA
  13. 1.6 2km ESE of Loma Linda, CA
  14. 1.9 7km NE of San Jacinto, CA
  15. 1.7 9km SE of Valle 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

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