California earthquakes

M3.9 earthquake 3km ESE of Coronado, CA

A magnitude 3.9 earthquake struck 3km ESE of Coronado, CA on Mon, Jun 17, 1985, 8:22 PM PDT (03:22 UTC), 5 km (3 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: 3.9 (ML, local (Richter)), minor
Magnitude from: Southern California Seismic Network
Local time: Mon, Jun 17, 1985, 8:22 PM PDT
UTC: 1985-06-18 03:22:28 UTC
Depth: 5.1 km (3.1 mi), shallow
Epicenter: 32.679° N, 117.151° 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
3.87	ML, local (Richter)	Southern California Seismic Network	Preferred · Final · 6 stations
4.0	ML, local (Richter)	USGS National Earthquake Information Center	Reviewed

What happened

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

Felt (V) at National City and Poway. Felt (IV) at Chula Vista, El Cajon, Escondido, Imperial Beach, Lakeside, Nestor, Oceanside, San Diego, Solana Beach and Spring Valley. Felt (III) at Campo, Bonsall, Julian, La Jolla and Tecate.

From the USGS event page for ci68492. 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: 147°
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: 155 in the 60 days after this one and 63 in the 30 days before it.

After

The first 60 of 155.

Before

Earthquakes today California earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event ci68492 (also filed as usp0002fy7). Read Fri, Oct 2, 2026, 6:34 PM UTC.