California earthquakes

M1.8 earthquake 9 km NNW of Mountain Gate, California

A magnitude 1.8 earthquake struck 9 km NNW of Mountain Gate, California on Sun, Jul 5, 1987, 4:01 PM PDT (23:01 UTC), 15 km (9 mi) below the surface.

A larger quake followed: M4.3 29 km NW of Paskenta, California. This one was a foreshock.

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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, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1987-07-05 23:01:50 UTC
Depth
14.7 km (9.1 mi), shallow
Epicenter
40.788° N, 122.393° 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 3.0 km horizontally, 7.1 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
276°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 38 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 2.5Northern California · 14333 days ago · 28 km deep · 82 km away
  2. 1.718 km N of Big Bend, California · 14330 days ago · 5 km deep · 60 km away
  3. 1.91 km ENE of Gerber, California · 14326 days ago · 27 km deep · 83 km away
  4. 2.06 km N of Burney, California · 14325 days ago · 8 km deep · 63 km away
  5. 2.415 km SE of Dunsmuir, California · 14324 days ago · 12 km deep · 43 km away
  6. 2.36 km N of Burney, California · 14324 days ago · 9 km deep · 64 km away
  7. 2.015 km NNE of Mineral, California · 14324 days ago · 2 km deep · 82 km away
  8. 1.915 km SE of Dunsmuir, California · 14324 days ago · 13 km deep · 43 km away
  9. 1.57 km N of Montgomery Creek, California · 14321 days ago · 15 km deep · 41 km away
  10. 1.67 km E of Willow Creek, California · 14320 days ago · 22 km deep · 99 km away
  11. 1.68 km N of Montgomery Creek, California · 14320 days ago · 14 km deep · 41 km away
  12. 1.56 km N of Burney, California · 14320 days ago · 8 km deep · 63 km away
  13. 1.88 km N of Montgomery Creek, California · 14319 days ago · 14 km deep · 41 km away
  14. 1.79 km NNW of Montgomery Creek, California · 14319 days ago · 9 km deep · 39 km away
  15. 3.76 km N of Burney, California · 14317 days ago · 10 km deep · 64 km away
  16. 1.64 km NW of Montgomery Creek, California · 14316 days ago · 13 km deep · 37 km away
  17. 1.7Northern California · 14316 days ago · 6 km deep · 92 km away
  18. 1.54 km S of Hat Creek, California · 14315 days ago · 1 km deep · 75 km away
  19. 2.111 km N of Burney, California · 14312 days ago · 19 km deep · 65 km away
  20. 1.67 km N of Burney, California · 14307 days ago · 4 km deep · 63 km away
  21. 2.26 km N of Burney, California · 14307 days ago · 8 km deep · 63 km away
  22. 2.06 km N of Burney, California · 14307 days ago · 14 km deep · 64 km away
  23. 2.66 km N of Burney, California · 14306 days ago · 9 km deep · 63 km away
  24. 2.68 km SW of Paynes Creek, California · 14306 days ago · 19 km deep · 65 km away
  25. 1.68 km SW of Paynes Creek, California · 14306 days ago · 11 km deep · 65 km away
  26. 2.79 km NW of Big Bend, California · 14305 days ago · 10 km deep · 45 km away
  27. 2.315 km N of Mineral, California · 14302 days ago · 14 km deep · 75 km away
  28. 3.632 km NNW of Junction City, California · 14294 days ago · 34 km deep · 70 km away
  29. 3.58 km S of Hat Creek, California · 14287 days ago · 2 km deep · 73 km away
  30. 1.66 km NNE of Old Station, California · 14284 days ago · 1 km deep · 83 km away
  31. 4.329 km NW of Paskenta, California · 14279 days ago · 42 km deep · 84 km away
  32. 2.333km WNW of Rancho Tehama Reserve, CA · 14279 days ago · 42 km deep · 85 km away
  33. 2.9Northern California · 14279 days ago · 8 km deep · 94 km away
  34. 1.99 km WSW of Paynes Creek, California · 14277 days ago · 10 km deep · 64 km away
  35. 3.62 km E of Lakehead, California · 14277 days ago · 4 km deep · 13 km away
  36. 3.52 km E of Lakehead, California · 14277 days ago · 4 km deep · 13 km away
  37. 3.28 km WSW of Big Bend, California · 14277 days ago · 3 km deep · 40 km away
  38. 1.816 km ESE of McCloud, California · 14275 days ago · 4 km deep · 61 km away

Before

  1. 2.39 km W of Manton, California · 14335 days ago · 8 km deep · 53 km away
  2. 1.622 km NE of Trinity Village, California · 14350 days ago · 4 km deep · 85 km away
  3. 1.920 km WNW of Butte Meadows, California · 14350 days ago · 8 km deep · 87 km away
  4. 1.712 km WSW of Shasta, California · 14350 days ago · 9 km deep · 34 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc10084343. Read Fri, Oct 2, 2026, 3:10 PM UTC.