QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

Earthquake near Banning, CA

No earthquake was likely felt in Banning in the 24 hours to 9:34 am PST (17:34 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 1.5 earthquake was recorded 8 km (5 mi) south-southeast of Banning, CA, at 9:15 am PST on 16 November 2021 (17:15 UTC), 17 km deep. 1 person has reported feeling it to USGS.

USGS: 8km SSE of Banning, CA

9 km (6 mi) ESE of Beaumont, CA · 144 km (90 mi) E of Los Angeles, CA

9:15 am PST, Nov 16, 2021 · · 17 km deep · released about 5.6 lb of TNT

10 km30 km60 km120 km N Riverside County 80 kmOrange County 87 kmSan Diego County 93 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
9:15 am PST on 16 November 2021 ()
Where
8 km (5 mi) south-southeast of Banning, CA · earthquakes near Banning
Magnitude
M 1.5 (ml)
Depth
17 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Riverside County, 80 km E
Nearest mapped fault
San Jacinto fault, 7 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 1822 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, 8 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: Cabazon, San Jacinto, Valle Vista, Beaumont, East Hemet, Hemet.

How big was it?

This earthquake released about 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 30,000 times the energy of this one.

Before 2016, the USGS record lists 23 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.7 The 1918 San Jacinto, California Earthquake · 15 km SW of this epicentre
  2. 6.3 The 1992 Big Bear, California Earthquake · 39 km N of this epicentre
  3. 6.2 3 km SE of San Bernardino, California · 45 km NW of this epicentre
  4. 6.0 The 1986 North Palm Springs, California Earthquake · 28 km NE of this epicentre
  5. 5.6 7km ENE of Running Springs, CA · 46 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 33.8552, -116.8583. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Riverside County, CA 80 km (50 mi) E earthquakes near Riverside County
Orange County, CA 87 km (54 mi) WSW earthquakes near Orange County
San Diego County, CA 93 km (58 mi) S earthquakes near San Diego County
San Bernardino County, CA 128 km (79 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

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

  1. 1.9 1km SE of Loma Linda, CA
  2. 1.6 10km NW of Anza, CA
  3. 1.8 1km WSW of Valle Vista, CA
  4. 2.4 10km SSW of Idyllwild, CA
  5. 1.8 10km S of Idyllwild, CA
  6. 1.6 14km SSE of Valle Vista, CA
  7. 1.6 3km W of Redlands, CA
  8. 3.4 3km SW of Redlands, CA
  9. 1.7 5km N of Cabazon, CA
  10. 1.9 10km S of Big Bear City, CA
  11. 1.8 11km NNE of Banning, CA
  12. 1.7 7km SE of Valle Vista, CA
  13. 1.7 6km E of Calimesa, CA
  14. 1.7 8km SSE of Redlands, CA
  15. 1.8 6km ESE 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.