California earthquakes

M1.7 earthquake 11 km WSW of Aspen Springs, California

A magnitude 1.7 earthquake struck 11 km WSW of Aspen Springs, California on Thu, Aug 30, 1984, 4:38 AM PDT (11:38 UTC), 6 km (4 mi) below the surface.

A larger quake followed: M3.6 10 km W of Aspen Springs, 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: 1.7 (Md, duration), micro
Magnitude from: Northern California Seismic System
Local time: Thu, Aug 30, 1984, 4:38 AM PDT
UTC: 1984-08-30 11:38:44 UTC
Depth: 6.1 km (3.8 mi), shallow
Epicenter: 37.501° N, 118.829° 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 0.3 km horizontally, 0.5 km in depth
Magnitude uncertainty: ±0.16
Depth from: From location
Station coverage gap: 85°
Stations used: 36

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 191 in the 60 days after this one and 115 in the 30 days before it.

After

The first 60 of 191.

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc26708. Read Fri, Oct 2, 2026, 9:25 AM UTC.