California earthquakes

M1.9 earthquake 5 km W of Twain, California

A magnitude 1.9 earthquake struck 5 km W of Twain, California on Wed, May 7, 1986, 5:30 PM PDT (00:30 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M2.8 3 km ESE of South Oroville, California. This one was a foreshock.

Quincy 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
1.9 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1986-05-08 00:30:25 UTC
Depth
8.3 km (5.2 mi), shallow
Epicenter
40.014° N, 121.135° 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 1.4 km horizontally, 8.8 km in depth
Depth from
From location
Station coverage gap
229°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 30 in the 60 days after this one and 29 in the 30 days before it.

After

  1. 2.61 km W of Berry Creek, California · 14757 days ago · 5 km deep · 48 km away
  2. 2.312 km SSE of Sierraville, California · 14757 days ago · -1 km deep · 91 km away
  3. 1.61 km NNE of Thermalito, California · 14757 days ago · 1 km deep · 66 km away
  4. 2.49 km SSE of Stirling City, California · 14755 days ago · 4 km deep · 35 km away
  5. 1.78 km N of Chester, California · 14754 days ago · 1 km deep · 42 km away
  6. 1.73 km W of Greenville, California · 14749 days ago · 4 km deep · 19 km away
  7. 2.512 km SE of Bucks Lake, California · 14749 days ago · 6 km deep · 25 km away
  8. 1.520 km NE of Shingletown, California · 14749 days ago · 3 km deep · 86 km away
  9. 2.83 km ESE of South Oroville, California · 14745 days ago · 0 km deep · 67 km away
  10. 1.99 km WNW of Chester, California · 14743 days ago · -2 km deep · 39 km away
  11. 1.712 km WSW of Chester, California · 14738 days ago · 3 km deep · 36 km away
  12. 2.46 km E of Orland, California · 14737 days ago · 4 km deep · 89 km away
  13. 1.89 km NNW of Old Station, California · 14733 days ago · 4 km deep · 87 km away
  14. 2.16 km ESE of Sierraville, California · 14728 days ago · -1 km deep · 87 km away
  15. 1.913 km E of Cottonwood, California · 14728 days ago · 4 km deep · 93 km away
  16. 1.714 km ESE of Mineral, California · 14725 days ago · 6 km deep · 40 km away
  17. 2.415km WNW of Susanville, CA · 14720 days ago · 10 km deep · 58 km away
  18. 2.215 km WNW of Susanville, California · 14720 days ago · 4 km deep · 57 km away
  19. 2.03 km NNE of Palermo, California · 14718 days ago · 23 km deep · 69 km away
  20. 2.17 km NW of Old Station, California · 14718 days ago · 5 km deep · 85 km away
  21. 1.515 km SE of Mineral, California · 14718 days ago · 5 km deep · 39 km away
  22. 2.312 km SE of Bend, California · 14716 days ago · 22 km deep · 84 km away
  23. 1.59 km NNE of Mineral, California · 14712 days ago · 5 km deep · 58 km away
  24. 2.58 km NNE of Clipper Mills, California · 14711 days ago · 19 km deep · 46 km away
  25. 2.52 km S of Taylorsville, California · 14708 days ago · 2 km deep · 25 km away
  26. 1.75 km WSW of Forbestown, California · 14707 days ago · 1 km deep · 60 km away
  27. 1.77 km E of Sierra Brooks, California · 14707 days ago · -1 km deep · 96 km away
  28. 1.93 km SW of Prattville, California · 14705 days ago · 4 km deep · 20 km away
  29. 2.23 km SW of Prattville, California · 14705 days ago · 8 km deep · 19 km away
  30. 1.711 km NNE of Westwood, California · 14704 days ago · 1 km deep · 45 km away

Before

  1. 1.613 km WNW of Paynes Creek, California · 14759 days ago · 23 km deep · 88 km away
  2. 1.85 km W of Cherokee, California · 14759 days ago · 5 km deep · 58 km away
  3. 2.88 km NNW of Chester, California · 14759 days ago · 8 km deep · 42 km away
  4. 2.32 km E of Storrie, California · 14759 days ago · 4 km deep · 17 km away
  5. 2.56 km WNW of Palermo, California · 14762 days ago · 22 km deep · 74 km away
  6. 1.9Northern California · 14764 days ago · 5 km deep · 34 km away
  7. 1.70 km SSE of Meadow Valley, California · 14766 days ago · 3 km deep · 12 km away
  8. 1.618 km ENE of Willows, California · 14767 days ago · 4 km deep · 88 km away
  9. 2.02 km E of Tobin, California · 14767 days ago · 3 km deep · 15 km away
  10. 1.97 km ESE of Magalia, California · 14768 days ago · 11 km deep · 39 km away
  11. 2.02 km ENE of Lake Almanor West, California · 14769 days ago · 6 km deep · 26 km away
  12. 1.96 km ENE of Mineral, California · 14770 days ago · 8 km deep · 53 km away
  13. 2.13 km ENE of Alleghany, California · 14775 days ago · 13 km deep · 66 km away
  14. 2.32 km WSW of Plumas Eureka (historical), California · 14776 days ago · 4 km deep · 45 km away
  15. 1.64 km ENE of Tobin, California · 14777 days ago · 4 km deep · 12 km away
  16. 2.013 km ESE of Mineral, California · 14777 days ago · 7 km deep · 40 km away
  17. 2.17 km SSE of Washington, California · 14778 days ago · 4 km deep · 86 km away
  18. 2.13 km ENE of Alleghany, California · 14778 days ago · 14 km deep · 66 km away
  19. 2.1Northern California · 14778 days ago · 11 km deep · 66 km away
  20. 2.63 km ESE of Alleghany, California · 14778 days ago · -1 km deep · 68 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc10085535. Read Sat, Oct 3, 2026, 5:01 AM UTC.