California earthquakes

M1.7 earthquake 11 km NNE of Shingletown, California

A magnitude 1.7 earthquake struck 11 km NNE of Shingletown, California on Thu, Aug 27, 1981, 3:28 PM PDT (22:28 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.5 2 km ESE of Prattville, California. This one was a foreshock.

Shingletown forecastMore in California

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), micro
Local time
UTC
1981-08-27 22:28:43 UTC
Depth
1.1 km (0.7 mi), shallow
Epicenter
40.598° N, 121.861° 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 2.5 km horizontally, 2.3 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
250°, poorly surrounded by stations
Stations used
3

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 2.52 km ESE of Prattville, California · 16449 days ago · 2 km deep · 76 km away
  2. 3.02 km ENE of Prattville, California · 16449 days ago · 12 km deep · 75 km away
  3. 2.81 km ENE of Lake Almanor West, California · 16449 days ago · 2 km deep · 70 km away
  4. 1.67 km NNW of McCloud, California · 16446 days ago · 6 km deep · 84 km away
  5. 2.66 km NW of Paskenta, California · 16443 days ago · -1 km deep · 98 km away
  6. 1.65 km N of McCloud, California · 16431 days ago · 5 km deep · 83 km away
  7. 1.77 km SE of Mineral, California · 16429 days ago · -1 km deep · 43 km away
  8. 3.29 km NNE of Millville, California · 16418 days ago · 3 km deep · 22 km away
  9. 2.26 km WSW of Paradise, California · 16416 days ago · 16 km deep · 98 km away
  10. 1.510 km NE of Mineral, California · 16415 days ago · -2 km deep · 36 km away
  11. 3.110 km N of Chico, California · 16404 days ago · 22 km deep · 86 km away

Before

  1. 1.9Northern California · 16467 days ago · 3 km deep · 50 km away
  2. 1.619 km N of Chester, California · 16473 days ago · 0 km deep · 58 km away
  3. 1.712 km ENE of Shingletown, California · 16473 days ago · 7 km deep · 10 km away
  4. 1.710 km SE of Mineral, California · 16473 days ago · 2 km deep · 46 km away
  5. 2.30 km NW of Chester, California · 16477 days ago · 2 km deep · 61 km away
  6. 1.615 km NNE of Butte Meadows, California · 16480 days ago · 3 km deep · 53 km away
  7. 1.97 km ESE of Los Molinos, California · 16482 days ago · 3 km deep · 68 km away
  8. 1.9Northern California · 16484 days ago · 13 km deep · 7 km away
  9. 1.6Northern California · 16485 days ago · 3 km deep · 57 km away
  10. 2.02 km ESE of Chester, California · 16486 days ago · 5 km deep · 64 km away
  11. 2.01 km ENE of Chester, California · 16486 days ago · 7 km deep · 64 km away
  12. 1.830 km NNW of McArthur, California · 16487 days ago · 10 km deep · 80 km away
  13. 1.92 km S of Lakehead, California · 16489 days ago · 4 km deep · 54 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1067173. Read Tue, Sep 22, 2026, 10:23 PM UTC.