M2.6 earthquake 4 km SSE of Floriston, California
A magnitude 2.6 earthquake struck 4 km SSE of Floriston, California on Sat, Sep 12, 1981, 11:09 AM PDT (18:09 UTC), 14 km (9 mi) below the surface.
A larger quake followed: M3.1 8 km E of Markleeville, California. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.6 (md), micro
- Local time
- UTC
- 1981-09-12 18:09:03 UTC
- Depth
- 14.4 km (8.9 mi), shallow
- Epicenter
- 39.354° N, 120.006° 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 1.2 km horizontally, 2.5 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 267°, poorly surrounded by stations
- 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: 10 in the 60 days after this one and 5 in the 30 days before it.
After
- 2.511 km NE of Cromberg, California · 16443 days ago · 5 km deep · 82 km away
- 3.18 km E of Markleeville, California · 16441 days ago · 3 km deep · 77 km away
- 2.513 km SW of Markleeville, California · 16433 days ago · 7 km deep · 81 km away
- 3.49 km S of Dayton, Nevada · 16428 days ago · 8 km deep · 42 km away
- 1.917 km W of Kirkwood, California · 16415 days ago · 14 km deep · 73 km away
- 1.916 km ESE of Alta, California · 16408 days ago · 24 km deep · 57 km away
- 3.313 km SSE of Sparks, Nevada · 16393 days ago · 2 km deep · 26 km away
- 1.87 km SSW of Kingvale, California · 16391 days ago · 14 km deep · 40 km away
- 1.95 km SSE of Sierraville, California · 16390 days ago · 4 km deep · 35 km away
- 2.17 km N of Truckee, California · 16387 days ago · 22 km deep · 17 km away
Before
- 2.66 km S of Kingvale, California · 16458 days ago · 11 km deep · 37 km away
- 3.13 km WSW of Spring Garden, California · 16460 days ago · 0 km deep · 92 km away
- 2.010 km SSW of Markleeville, California · 16462 days ago · 12 km deep · 84 km away
- 2.011 km NE of Soda Springs, California · 16466 days ago · 12 km deep · 25 km away
- 2.31 km SSE of Coleville, California · 16474 days ago · 4 km deep · 99 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event nc1067556. Read Tue, Sep 22, 2026, 11:16 AM UTC.