California earthquakes

M1.9 earthquake 10 km NNW of Truckee, California

A magnitude 1.9 earthquake struck 10 km NNW of Truckee, California on Sun, Oct 27, 1985, 11:12 AM PST (19:12 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.6 14 km WNW of Kingvale, California. This one was a foreshock.

Truckee forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.9 (md), micro
Local time
UTC
1985-10-27 19:12:54 UTC
Depth
8.1 km (5.0 mi), shallow
Epicenter
39.418° N, 120.210° 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 0.4 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
97°
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 1.710 km NNE of Truckee, California · 14932 days ago · -1 km deep · 5 km away
  2. 2.614 km WNW of Kingvale, California · 14922 days ago · 2 km deep · 32 km away
  3. 1.67 km NNE of Truckee, California · 14916 days ago · 4 km deep · 6 km away
  4. 1.67 km NE of Truckee, California · 14901 days ago · 6 km deep · 8 km away
  5. 1.57 km NNW of Truckee, California · 14899 days ago · -1 km deep · 3 km away
  6. 1.64 km SSE of Floriston, California · 14896 days ago · 2 km deep · 19 km away
  7. 2.55 km WNW of Plumas Eureka (historical), California · 14895 days ago · 2 km deep · 62 km away

Before

  1. 1.65 km SSW of Markleeville, California · 14942 days ago · 6 km deep · 93 km away
  2. 2.811 km W of La Porte, California · 14943 days ago · 11 km deep · 84 km away
  3. 2.513 km NE of Lake Davis, California · 14943 days ago · 10 km deep · 63 km away
  4. 2.14 km S of Sierraville, California · 14943 days ago · 6 km deep · 20 km away
  5. 2.34 km SSE of Nevada City, California · 14947 days ago · 11 km deep · 71 km away
  6. 2.23 km SSE of Sierraville, California · 14948 days ago · 7 km deep · 20 km away
  7. 2.03 km SSW of Sierraville, California · 14948 days ago · -2 km deep · 21 km away
  8. 1.54 km SSE of Sierraville, California · 14948 days ago · 8 km deep · 20 km away
  9. 3.04 km S of Sierraville, California · 14948 days ago · 3 km deep · 20 km away
  10. 2.06 km SSW of Markleeville, California · 14949 days ago · -1 km deep · 94 km away
  11. 2.015 km N of Lake Davis, California · 14953 days ago · 4 km deep · 69 km away
  12. 2.311 km WNW of Floriston, California · 14964 days ago · 3 km deep · 6 km away
  13. 2.211 km WNW of Floriston, California · 14964 days ago · 3 km deep · 6 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1132521. Read Tue, Sep 22, 2026, 3:58 AM UTC.