California earthquakes

M1.8 earthquake 7 km WNW of Del Monte Forest, California

A magnitude 1.8 earthquake struck 7 km WNW of Del Monte Forest, California on Tue, Aug 13, 1985, 9:25 AM PDT (16:25 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M3.2 2 km W of San Juan Bautista, California. This one was a foreshock.

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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: 1.8 (Md, duration), micro
Magnitude from: Northern California Seismic System
Local time: Tue, Aug 13, 1985, 9:25 AM PDT
UTC: 1985-08-13 16:25:13 UTC
Depth: 8.5 km (5.3 mi), shallow
Epicenter: 36.625° N, 122.023° W
Region: California
Tsunami flag: No
Status: Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty: About 0.6 km horizontally, 0.6 km in depth
Magnitude uncertainty: ±0.08
Depth from: From location
Station coverage gap: 225°, poorly surrounded by stations
Stations used: 13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 119 in the 60 days after this one and 56 in the 30 days before it.

After

The first 60 of 119.

Before

Earthquakes today California earthquakes Live radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc52889. Read Sun, Oct 4, 2026, 11:24 PM UTC.