California earthquakes

M1.8 earthquake 6 km WSW of Durham, California

A magnitude 1.8 earthquake struck 6 km WSW of Durham, California on Sat, Aug 1, 1981, 9:26 AM PDT (16:26 UTC), 29 km (18 mi) below the surface.

A larger quake followed: M3.1 3 km WSW of Spring Garden, California. This one was a foreshock.

Durham 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
1.8 (md), micro
Local time
UTC
1981-08-01 16:26:44 UTC
Depth
28.7 km (17.9 mi), shallow
Epicenter
39.614° N, 121.863° 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 0.9 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
104°
Stations used
11

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 26 in the 60 days after this one and 32 in the 30 days before it.

After

  1. 2.91 km ENE of Clipper Mills, California · 16493 days ago · 8 km deep · 62 km away
  2. 2.01 km ENE of Chester, California · 16491 days ago · 7 km deep · 95 km away
  3. 2.02 km ESE of Chester, California · 16491 days ago · 5 km deep · 95 km away
  4. 1.6Northern California · 16491 days ago · 3 km deep · 86 km away
  5. 1.97 km ESE of Los Molinos, California · 16488 days ago · 3 km deep · 45 km away
  6. 1.615 km NNE of Butte Meadows, California · 16486 days ago · 3 km deep · 74 km away
  7. 2.30 km NW of Chester, California · 16482 days ago · 2 km deep · 94 km away
  8. 1.710 km SE of Mineral, California · 16479 days ago · 2 km deep · 82 km away
  9. 1.76 km SSE of Palermo, California · 16478 days ago · 1 km deep · 40 km away
  10. 1.51 km E of Oroville, California · 16476 days ago · 10 km deep · 30 km away
  11. 1.9Northern California · 16473 days ago · 3 km deep · 97 km away
  12. 1.723 km NE of Potter Valley, California · 16469 days ago · 10 km deep · 93 km away
  13. 3.13 km WSW of Spring Garden, California · 16466 days ago · 0 km deep · 94 km away
  14. 1.719 km ENE of Potter Valley, California · 16465 days ago · 11 km deep · 93 km away
  15. 1.825 km NNE of Potter Valley, California · 16463 days ago · 9 km deep · 95 km away
  16. 1.726 km NNE of Potter Valley, California · 16463 days ago · 10 km deep · 95 km away
  17. 1.76 km SSW of Hamilton City, California · 16458 days ago · 19 km deep · 17 km away
  18. 2.14 km SE of Palermo, California · 16457 days ago · 6 km deep · 39 km away
  19. 2.52 km ESE of Prattville, California · 16455 days ago · 2 km deep · 90 km away
  20. 3.02 km ENE of Prattville, California · 16454 days ago · 12 km deep · 92 km away
  21. 2.81 km ENE of Lake Almanor West, California · 16454 days ago · 2 km deep · 91 km away
  22. 2.66 km NW of Paskenta, California · 16449 days ago · -1 km deep · 72 km away
  23. 2.04 km NE of Princeton, California · 16441 days ago · 24 km deep · 22 km away
  24. 2.121 km ENE of Potter Valley, California · 16437 days ago · 0 km deep · 91 km away
  25. 1.720 km NNE of Upper Lake, California · 16436 days ago · 7 km deep · 88 km away
  26. 1.77 km SE of Mineral, California · 16435 days ago · -1 km deep · 80 km away

Before

  1. 2.522 km NE of Potter Valley, California · 16496 days ago · 12 km deep · 93 km away
  2. 2.322 km WNW of Elk Creek, California · 16497 days ago · 7 km deep · 80 km away
  3. 1.94 km SE of Palermo, California · 16500 days ago · 6 km deep · 38 km away
  4. 2.010 km W of Lake Almanor West, California · 16501 days ago · 3 km deep · 83 km away
  5. 2.56 km SSE of Dunnigan, California · 16501 days ago · 10 km deep · 87 km away
  6. 2.75 km ESE of Chico, California · 16503 days ago · 19 km deep · 14 km away
  7. 1.93 km SW of East Shore, California · 16504 days ago · 1 km deep · 93 km away
  8. 1.66 km NW of Plumas Eureka (historical), California · 16504 days ago · 1 km deep · 97 km away
  9. 1.82 km NE of Canyondam, California · 16506 days ago · 2 km deep · 94 km away
  10. 1.8Northern California · 16506 days ago · 9 km deep · 96 km away
  11. 1.52 km ESE of Nord, California · 16506 days ago · 14 km deep · 18 km away
  12. 2.913 km E of Bend, California · 16506 days ago · 24 km deep · 72 km away
  13. 2.86 km NNW of Thermalito, California · 16508 days ago · 2 km deep · 23 km away
  14. 2.3Northern California · 16508 days ago · 2 km deep · 23 km away
  15. 2.611 km NE of Nord, California · 16510 days ago · 21 km deep · 26 km away
  16. 2.54 km SE of Palermo, California · 16510 days ago · 7 km deep · 39 km away
  17. 1.50 km NW of Lake Almanor Country Club, California · 16511 days ago · 2 km deep · 94 km away
  18. 2.54 km SE of Palermo, California · 16512 days ago · 7 km deep · 39 km away
  19. 1.919 km ENE of Potter Valley, California · 16512 days ago · 11 km deep · 93 km away
  20. 2.122 km WNW of Elk Creek, California · 16513 days ago · 6 km deep · 80 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1066205. Read Mon, Sep 28, 2026, 11:04 AM UTC.