Earthquake · reviewed by a seismologist
M 1.7ml
Earthquake near Beaumont, CA
No earthquake was likely felt in Beaumont in the 24 hours to 6:53 am PST (14:53 UTC). The last one was M 2.8, 14 km (8 mi) S, at 8:30 pm PDT on 14 October 2026, estimated intensity II (weak) in town; 87 felt reports to USGS. Every earthquake near Beaumont
This page: a magnitude 1.7 earthquake was recorded 6 km (4 mi) south-southeast of Beaumont, CA, at 2:47 pm PDT on 28 October 2017 (21:47 UTC), 12 km deep.
USGS: 6km SSE of Beaumont, CA
in Beaumont, CA · 136 km (85 mi) E of Los Angeles, CA
- When
- 2:47 pm PDT on 28 October 2017 ()
- Where
- 6 km (4 mi) south-southeast of Beaumont, CA · earthquakes near Beaumont
- Magnitude
- M 1.7 (ml)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Nearest
- Orange County, 80 km WSW
- Nearest mapped fault
- Beaumont Plain fault, 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 3300 days ago
Earthquake alerts for Beaumont, CA
Get a notification in this browser when USGS records an earthquake near Beaumont, 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 2 km (1 mi) from the epicentre. In Beaumont, 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: Banning, Cherry Valley, San Jacinto, Cabazon, Hemet, Valle Vista.
How big was it?
This earthquake released about 10 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,500,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
- Around the size people start to feel M 3.0 95× the energy of this one
- This earthquake M 1.7 about 10 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 4.4 on 2016-01-06 — about 12,000 times the energy of this one.
Before 2016, the USGS record lists 22 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 The 1918 San Jacinto, California Earthquake · 14 km S of this epicentre
- 6.3 The 1992 Big Bear, California Earthquake · 37 km NNE of this epicentre
- 6.2 3 km SE of San Bernardino, California · 37 km NW of this epicentre
- 6.0 The 1910 Lake Elsinore, California Earthquake · 47 km WSW of this epicentre
- 6.0 The 1986 North Palm Springs, California Earthquake · 34 km ENE 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 33.8850, -116.9452. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Orange County, CA | 80 km (50 mi) | WSW | earthquakes near Orange County |
| Riverside County, CA | 89 km (55 mi) | E | earthquakes near Riverside County |
| San Diego County, CA | 97 km (60 mi) | S | earthquakes near San Diego County |
| San Bernardino County, CA | 129 km (80 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
42 earthquakes have been recorded within 50 km since this one.
- 1.8 5km S of Idyllwild, CA
- 1.6 8km NE of Aguanga, CA
- 2.6 8km NE of Aguanga, CA
- 1.8 8km E of Murrieta Hot Springs, CA
- 1.8 4km N of Beaumont, CA
- 2.2 4km NNW of Valle Vista, CA
- 1.9 5km NNW of Lake Elsinore, CA
- 1.7 10km SW of Idyllwild, CA
- 1.8 2km NE of Redlands, CA
- 1.9 8km ENE of Aguanga, CA
- 1.7 13km NNE of Yucaipa, CA
- 1.9 8km ENE of Aguanga, CA
- 2.1 8km NE of Aguanga, CA
- 2.2 8km ENE of Aguanga, CA
- 1.6 3km SE of Loma Linda, 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.