California earthquakes

M4.2 earthquake 9km NE of Cabazon, CA

A magnitude 4.2 earthquake struck 9km NE of Cabazon, CA on Mon, Aug 6, 1984, 1:14 AM PDT (08:14 UTC), 13 km (8 mi) below the surface.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude: 4.2 (ML, local (Richter)), light
Magnitude from: Southern California Seismic Network
Local time: Mon, Aug 6, 1984, 1:14 AM PDT
UTC: 1984-08-06 08:14:36 UTC
Depth: 13.3 km (8.2 mi), shallow
Epicenter: 33.976° N, 116.713° W
Region: California
Tsunami flag: No
Status: Reviewed by a seismologist

Magnitude estimates

Different scales measure different things and differ by a few tenths. The USGS marks one as preferred, and it is the one this page uses.

Mag.	Scale	Computed by	Notes
4.21	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · 7 stations
4.0	mb, body-wave	USGS National Earthquake Information Center	Reviewed · 1 stations

What happened

The USGS’s account of the effects of this earthquake.

Felt (V) at Banning, Beaumont, Cathedral City and Idyllwild. Felt (IV) at Angelus Oaks, Cabazon, Coachella, Hemet, Palm Springs, Perris, Morongo Valley, Indio, Mountain Center, Skyforest, Sun City, Sugarloaf, Riverside, Rancho Mirage and Valle Vista. Felt in Riverside and San Bernardino counties.

From the USGS event page for ci46741. U.S. Geological Survey text and figures are in the public domain.

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Depth from: From location
Station coverage gap: 82°
Stations used: 0

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 172 in the 60 days after this one and 183 in the 30 days before it.

After

The first 60 of 172.

Before

Earthquakes today California earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci46741 (also filed as usp0002686). Read Fri, Oct 2, 2026, 5:08 PM UTC.