California earthquakes

M2.8 earthquake 6 km W of Floriston, California

A magnitude 2.8 earthquake struck 6 km W of Floriston, California on Wed, Dec 3, 1986, 3:56 PM PST (23:56 UTC), 3 km (2 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
2.8 (md), micro
Local time
UTC
1986-12-03 23:56:04 UTC
Depth
2.6 km (1.6 mi), shallow
Epicenter
39.402° N, 120.091° W
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 0.2 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
81°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 2.07 km N of Greenhorn, California · 14537 days ago · 17 km deep · 86 km away
  2. 2.05 km N of Greenhorn, California · 14537 days ago · 6 km deep · 83 km away
  3. 2.314 km S of Kingvale, California · 14533 days ago · 2 km deep · 38 km away
  4. 2.5Northern California · 14528 days ago · 4 km deep · 0 km away
  5. 1.99 km N of Truckee, California · 14520 days ago · 8 km deep · 10 km away
  6. 1.610 km NNW of Truckee, California · 14520 days ago · 10 km deep · 11 km away
  7. 2.13 km E of Keddie, California · 14518 days ago · 5 km deep · 98 km away
  8. 1.712 km N of Truckee, California · 14501 days ago · 6 km deep · 10 km away
  9. 1.812 km N of Truckee, California · 14501 days ago · 5 km deep · 10 km away
  10. 2.515 km S of Kingvale, California · 14500 days ago · -1 km deep · 40 km away
  11. 1.8Northern California · 14483 days ago · 6 km deep · 18 km away
  12. 2.1Northern California · 14481 days ago · 4 km deep · 27 km away

Before

  1. 2.111 km N of Truckee, CA · 14539 days ago · 2 km deep · 6 km away
  2. 2.414 km S of Kingvale, California · 14543 days ago · -1 km deep · 39 km away
  3. 1.63 km W of Topaz Lake, Nevada · 14543 days ago · 2 km deep · 90 km away
  4. 2.24 km NW of Topaz, California · 14546 days ago · 3 km deep · 96 km away
  5. 3.014 km S of Kingvale, California · 14555 days ago · 5 km deep · 39 km away
  6. 2.211 km SE of Sierraville, California · 14558 days ago · -1 km deep · 20 km away
  7. 1.99 km N of Truckee, California · 14562 days ago · 9 km deep · 9 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc89347. Read Tue, Sep 22, 2026, 8:47 PM UTC.