Earthquake · reviewed by a seismologist
M 1.8ml
Earthquake near Cabazon, CA
No earthquake was likely felt in Cabazon in the 24 hours to 6:56 am PST (14:56 UTC). The last one was M 2.8, 20 km (13 mi) SW, at 8:30 pm PDT on 14 October 2026, estimated intensity II (weak) in town; 87 felt reports to USGS. Every earthquake near Cabazon
This page: a magnitude 1.8 earthquake was recorded 6 km (3 mi) southeast of Cabazon, CA, at 7:35 pm PDT on 28 May 2021 (02:35 UTC), 17 km deep.
USGS: 6km SE of Cabazon, CA
20 km (12 mi) E of Beaumont, CA · 125 km (78 mi) NNE of San Diego, CA
- When
- 7:35 pm PDT on 28 May 2021 ()
- Where
- 6 km (3 mi) southeast of Cabazon, CA · earthquakes near Cabazon
- Magnitude
- M 1.8 (ml)
- Depth
- 17 km below the surface
- Felt
- no reports yet
- Nearest
- Riverside County, 70 km ESE
- Nearest mapped fault
- San Gorgonio Pass 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 1993 days ago
Earthquake alerts for Cabazon, CA
Get a notification in this browser when USGS records an earthquake near Cabazon, 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 it was probably too small to be felt, even directly above it. In Cabazon, 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, Idyllwild-Pine Cove, Idyllwild, Palm Springs, Valle Vista, Beaumont.
How big was it?
This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 730,000× the energy of this one
- Around the size people start to feel M 3.0 65× the energy of this one
- This earthquake M 1.8 about 15 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 4.9 on 2020-04-04 — about 42,000 times the energy of this one.
Before 2016, the USGS record lists 34 earthquakes of M5 or more within 50 km; the five largest:
- 7.3 The 1992 Landers, California Earthquake · 45 km NE of this epicentre
- 6.7 The 1918 San Jacinto, California Earthquake · 26 km WSW of this epicentre
- 6.3 The 1992 Big Bear, California Earthquake · 36 km NNW of this epicentre
- 6.1 The 1992 Joshua Tree, California Earthquake · 40 km ENE of this epicentre
- 6.0 The 1948 Desert Hot Springs, California Earthquake · 39 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 33.8875, -116.7393. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Riverside County, CA | 70 km (44 mi) | ESE | earthquakes near Riverside County |
| San Diego County, CA | 96 km (60 mi) | S | earthquakes near San Diego County |
| Orange County, CA | 99 km (61 mi) | WSW | earthquakes near Orange County |
| San Bernardino County, CA | 119 km (74 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
51 earthquakes have been recorded within 50 km since this one.
- 2.0 7km N of Yucca Valley, CA
- 2.5 3km ENE of San Jacinto, CA
- 1.5 5km SSE of Banning, CA
- 1.5 18km ESE of Anza, CA
- 1.8 11km ESE of Anza, CA
- 1.7 10km S of Idyllwild, CA
- 1.6 7km SW of Morongo Valley, CA
- 2.0 14km ESE of Anza, CA
- 1.6 4km NNW of Yucca Valley, CA
- 3.6 4km NNW of Yucca Valley, CA
- 2.3 5km S of Mentone, CA
- 1.9 9km NE of Aguanga, CA
- 1.6 13km WNW of Anza, CA
- 1.6 4km ENE of Big Bear City, CA
- 1.5 4km SSW of Redlands, 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.