Nevada earthquakes

M1.6 earthquake 4 km SSE of Floriston, California

A magnitude 1.6 earthquake struck 4 km SSE of Floriston, California on Tue, Dec 10, 1985, 3:12 AM PST (11:12 UTC), 2 km (2 mi) below the surface.

A larger quake followed: M2.5 5 km WNW of Plumas Eureka (historical), 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
1.6 (md), micro
Local time
UTC
1985-12-10 11:12:39 UTC
Depth
2.5 km (1.6 mi), shallow
Epicenter
39.355° N, 120.004° W
Region
Nevada
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 0.4 km horizontally, 2.3 km in depth
Magnitude uncertainty
±0.01
Depth from
From location
Station coverage gap
117°
Stations used
8

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 4 in the 30 days before it.

After

Before

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1133672. Read Tue, Sep 22, 2026, 12:15 PM UTC.