M3.6 earthquake 6km SSW of Brawley, CA

A magnitude 3.6 earthquake struck 6km SSW of Brawley, CA on Tue, Aug 10, 1982, 11:37 AM PDT (18:37 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M4.1 24km WSW of Westmorland, CA. This one was a foreshock.

Map

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

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
3.59	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · 10 stations
3.6	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed

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

Felt (IV) at El Centro, Imperial and Jacumba. Felt (III) at Heber and Seeley.

From the USGS event page for ci506373. U.S. Geological Survey text and figures are in the public domain.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

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

Within 100 km, magnitude 1.5 and up: 157 in the 60 days after this one and 57 in the 30 days before it.

The first 60 of 157.

From the USGS Earthquake Hazards Program and its partner networks, event ci506373 (also filed as usp0001ny9). Read Fri, Oct 2, 2026, 2:44 PM UTC.