Earthquake · reviewed by a seismologist
M 2.0ml
Earthquake near Redlands, CA
No earthquake was likely felt in Redlands in the 24 hours to 5:03 am PST (13:03 UTC). The last one was M 2.0, 9 km (5 mi) SSE, at 10:33 pm PST on 2 November 2026, estimated intensity II (weak) in town. Every earthquake near Redlands
This page: a magnitude 2.0 earthquake was recorded 7 km (4 mi) south-southwest of Redlands, CA, at 3:30 pm PDT on 5 August 2020 (22:30 UTC), 15 km deep. 1 person has reported feeling it to USGS.
USGS: 7km SSW of Redlands, CA
7 km (4 mi) SSW of Redlands, CA · 111 km (69 mi) E of Los Angeles, CA
- When
- 3:30 pm PDT on 5 August 2020 ()
- Where
- 7 km (4 mi) south-southwest of Redlands, CA · earthquakes near Redlands
- Magnitude
- M 2.0 (ml)
- Depth
- 15 km below the surface
- Felt
- 1 report · strongest reported intensity I
- Nearest
- Orange County, 64 km SW
- Nearest mapped fault
- San Jacinto fault, under 1 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 2288 days ago
Earthquake alerts for Redlands, CA
Get a notification in this browser when USGS records an earthquake near Redlands, CA. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 6 km (4 mi) from the epicentre. In Redlands, 7 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: Loma Linda, Moreno Valley, Grand Terrace, Mentone, Highgrove, Colton.
How big was it?
This earthquake released about 28 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 540,000× the energy of this one
- Magna, Utah 2020 M 5.7 380,000× the energy of this one
- Around the size people start to feel M 3.0 34× the energy of this one
- This earthquake M 2.0 about 28 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 5,800 times the energy of this one.
Before 2016, the USGS record lists 23 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1918 San Jacinto, California Earthquake · 34 km SE of this epicentre
- 6.3 The 1992 Big Bear, California Earthquake · 42 km ENE of this epicentre
- 6.2 3 km SE of San Bernardino, California · 11 km NNW of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 38 km SSW of this epicentre
- 5.6 7km ENE of Running Springs, CA · 31 km NNE 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 33.9997, -117.2103. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 64 km (39 mi) | SW | earthquakes near Orange County |
| Los Angeles County, CA | 99 km (62 mi) | WNW | earthquakes near Los Angeles County |
| Riverside County, CA | 116 km (72 mi) | ESE | earthquakes near Riverside County |
| San Diego County, CA | 116 km (72 mi) | SSE | earthquakes near San Diego County |
| San Bernardino County, CA | 134 km (83 mi) | NE | earthquakes near San Bernardino County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
55 earthquakes have been recorded within 50 km since this one.
- 1.5 2km ENE of Calimesa, CA
- 1.8 2km ENE of Calimesa, CA
- 1.6 6km NNE of Beaumont, CA
- 2.9 12km SW of Morongo Valley, CA
- 1.6 1km NW of Redlands, CA
- 1.6 4km S of Loma Linda, CA
- 2.7 1km NW of Redlands, CA
- 1.9 11km WNW of Lake Elsinore, CA
- 1.9 2km ESE of Loma Linda, CA
- 1.9 18km N of Banning, CA
- 1.8 4km NNW of Fontana, CA
- 1.5 18km N of Banning, CA
- 2.2 13km E of Yucaipa, CA
- 1.8 5km NW of Glen Avon, CA
- 1.8 13km N of Cabazon, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.