California earthquakes

M1.8 earthquake 12 km SW of Durham, California

A magnitude 1.8 earthquake struck 12 km SW of Durham, California on Mon, Dec 24, 1984, 8:38 AM PST (16:38 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M1.9 16 km ENE of Potter Valley, 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
1984-12-24 16:38:00 UTC
Depth
17.9 km (11.1 mi), shallow
Epicenter
39.560° N, 121.894° 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 0.6 km horizontally, 2.2 km in depth
Magnitude uncertainty
±0.28
Depth from
From location
Station coverage gap
105°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 39 in the 60 days after this one and 16 in the 30 days before it.

After

  1. 1.69 km WSW of Manton, California · 15245 days ago · 5 km deep · 95 km away
  2. 1.916 km ENE of Potter Valley, California · 15241 days ago · 6 km deep · 92 km away
  3. 1.912 km E of Cottonwood, California · 15241 days ago · 18 km deep · 92 km away
  4. 1.511 km WSW of Chester, California · 15238 days ago · 5 km deep · 92 km away
  5. 2.312 km NE of Proberta, California · 15237 days ago · 12 km deep · 67 km away
  6. 1.94 km NNW of Alta Sierra, California · 15237 days ago · 10 km deep · 83 km away
  7. 2.016 km WNW of Paynes Creek, California · 15237 days ago · 18 km deep · 95 km away
  8. 1.67 km SE of Hamilton City, California · 15236 days ago · 5 km deep · 16 km away
  9. 1.615 km E of Cottonwood, California · 15236 days ago · 7 km deep · 92 km away
  10. 2.220 km NNE of Upper Lake, California · 15236 days ago · 7 km deep · 86 km away
  11. 1.65 km NNW of Hidden Valley Lake, California · 15235 days ago · 7 km deep · 99 km away
  12. 1.619 km ENE of Potter Valley, California · 15235 days ago · 10 km deep · 88 km away
  13. 3.012 km W of Paynes Creek, California · 15233 days ago · 17 km deep · 88 km away
  14. 1.810 km WNW of Paynes Creek, California · 15233 days ago · 4 km deep · 91 km away
  15. 1.916 km ENE of Potter Valley, California · 15232 days ago · 7 km deep · 92 km away
  16. 2.00 km SSW of Twain, California · 15232 days ago · 7 km deep · 86 km away
  17. 1.52 km WNW of Clear Lake Riviera, California · 15229 days ago · 4 km deep · 99 km away
  18. 1.520 km NNE of Upper Lake, California · 15227 days ago · 5 km deep · 86 km away
  19. 2.616 km W of Paskenta, California · 15224 days ago · 1 km deep · 80 km away
  20. 1.6Northern California · 15221 days ago · 10 km deep · 99 km away
  21. 1.928 km ENE of Covelo, California · 15219 days ago · -1 km deep · 95 km away
  22. 1.920 km NNE of Potter Valley, California · 15217 days ago · 7 km deep · 96 km away
  23. 2.03 km NNE of Lake Almanor West, California · 15215 days ago · 6 km deep · 99 km away
  24. 1.818 km ENE of Potter Valley, California · 15210 days ago · 9 km deep · 90 km away
  25. 1.95 km ENE of Clearlake, California · 15207 days ago · 1 km deep · 87 km away
  26. 1.63 km ENE of Loma Rica, California · 15204 days ago · 1 km deep · 52 km away
  27. 1.611 km ESE of Hidden Valley Lake, California · 15203 days ago · 0 km deep · 98 km away
  28. 1.512 km W of Chester, California · 15203 days ago · 3 km deep · 92 km away
  29. 1.64 km ESE of Palermo, California · 15202 days ago · 9 km deep · 38 km away
  30. 1.74 km NNE of Lucerne, California · 15200 days ago · 17 km deep · 90 km away
  31. 2.53 km NNE of Clearlake, California · 15199 days ago · 0 km deep · 89 km away
  32. 1.83 km NNW of Lake Almanor West, California · 15199 days ago · 3 km deep · 98 km away
  33. 1.72 km N of Lake Almanor West, California · 15196 days ago · 6 km deep · 98 km away
  34. 2.122 km NNE of Potter Valley, California · 15195 days ago · 7 km deep · 94 km away
  35. 2.922 km NNE of Potter Valley, California · 15194 days ago · 7 km deep · 94 km away
  36. 2.022 km NNE of Potter Valley, California · 15194 days ago · 7 km deep · 94 km away
  37. 1.69 km ESE of Hidden Valley Lake, California · 15193 days ago · 6 km deep · 99 km away
  38. 1.81 km SE of Clearlake, California · 15193 days ago · 9 km deep · 92 km away
  39. 2.113 km N of Upper Lake, California · 15189 days ago · 12 km deep · 94 km away

Before

  1. 1.913 km E of Cottonwood, California · 15249 days ago · 13 km deep · 94 km away
  2. 1.817 km ENE of Potter Valley, California · 15250 days ago · 7 km deep · 92 km away
  3. 2.32 km WSW of La Porte, California · 15253 days ago · 17 km deep · 77 km away
  4. 2.227 km W of Paskenta, California · 15253 days ago · 9 km deep · 92 km away
  5. 1.7Northern California · 15257 days ago · 4 km deep · 38 km away
  6. 2.27 km W of Durham, California · 15258 days ago · 27 km deep · 11 km away
  7. 1.68 km ENE of Clearlake, California · 15260 days ago · 1 km deep · 85 km away
  8. 2.12 km W of Paradise, California · 15263 days ago · 20 km deep · 30 km away
  9. 1.94 km SE of Canyondam, California · 15263 days ago · 2 km deep · 98 km away
  10. 1.620 km ENE of Potter Valley, California · 15265 days ago · 5 km deep · 88 km away
  11. 1.52 km SSE of Canyondam, California · 15265 days ago · 0 km deep · 96 km away
  12. 1.816 km NNE of Upper Lake, California · 15267 days ago · 10 km deep · 85 km away
  13. 2.534 km NW of Paskenta, California · 15270 days ago · 5 km deep · 99 km away
  14. 1.722 km W of Elk Creek, California · 15271 days ago · 7 km deep · 78 km away
  15. 2.69 km WNW of Chester, California · 15273 days ago · 2 km deep · 98 km away
  16. 2.49 km ENE of Hidden Valley Lake, California · 15277 days ago · 7 km deep · 95 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1124613. Read Tue, Sep 22, 2026, 9:29 PM UTC.