California earthquakes

M1.6 earthquake 6 km NNE of Old Station, California

A magnitude 1.6 earthquake struck 6 km NNE of Old Station, California on Mon, Aug 24, 1987, 2:34 AM PDT (09:34 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M3.9 14 km WSW of Lake Almanor West, 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
1.6 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1987-08-24 09:34:51 UTC
Depth
1.0 km (0.6 mi), shallow
Epicenter
40.734° N, 121.414° 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 1.1 km horizontally, 2.7 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
207°, poorly surrounded by stations
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: 22 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 3.914 km WSW of Lake Almanor West, California · 14281 days ago · 4 km deep · 63 km away
  2. 2.9Northern California · 14279 days ago · 8 km deep · 31 km away
  3. 1.90 km SSW of Lake Almanor Country Club, California · 14278 days ago · 12 km deep · 59 km away
  4. 1.99 km WSW of Paynes Creek, California · 14277 days ago · 10 km deep · 70 km away
  5. 3.62 km E of Lakehead, California · 14277 days ago · 4 km deep · 81 km away
  6. 3.52 km E of Lakehead, California · 14277 days ago · 4 km deep · 81 km away
  7. 3.28 km WSW of Big Bend, California · 14277 days ago · 3 km deep · 56 km away
  8. 1.816 km ESE of McCloud, California · 14275 days ago · 4 km deep · 70 km away
  9. 1.516 km SE of Dunsmuir, California · 14270 days ago · 4 km deep · 73 km away
  10. 2.015 km SE of Dunsmuir, California · 14268 days ago · 11 km deep · 75 km away
  11. 1.61 km S of Canyondam, California · 14265 days ago · 1 km deep · 70 km away
  12. 2.311 km ENE of Bend, California · 14254 days ago · 16 km deep · 75 km away
  13. 1.914 km NNE of Shingletown, California · 14253 days ago · 16 km deep · 39 km away
  14. 1.612 km ENE of Bend, California · 14252 days ago · 11 km deep · 73 km away
  15. 1.513 km NE of Bend, California · 14252 days ago · 8 km deep · 73 km away
  16. 2.012 km ENE of Bend, California · 14252 days ago · 14 km deep · 74 km away
  17. 2.19 km ENE of Bend, California · 14252 days ago · 19 km deep · 76 km away
  18. 2.711 km ENE of Bend, California · 14246 days ago · 16 km deep · 74 km away
  19. 2.511 km ENE of Bend, California · 14246 days ago · 15 km deep · 74 km away
  20. 2.28 km ENE of Gerber, California · 14226 days ago · 16 km deep · 90 km away
  21. 2.510 km NW of Belden, California · 14226 days ago · 13 km deep · 75 km away
  22. 2.02 km W of Cassel, California · 14225 days ago · 3 km deep · 25 km away

Before

  1. 3.58 km S of Hat Creek, California · 14287 days ago · 2 km deep · 9 km away
  2. 2.315 km N of Mineral, California · 14302 days ago · 14 km deep · 32 km away
  3. 2.79 km NW of Big Bend, California · 14305 days ago · 10 km deep · 62 km away
  4. 1.68 km SW of Paynes Creek, California · 14306 days ago · 11 km deep · 70 km away
  5. 2.68 km SW of Paynes Creek, California · 14306 days ago · 19 km deep · 69 km away
  6. 2.66 km N of Burney, California · 14306 days ago · 9 km deep · 32 km away
  7. 1.94 km W of Janesville, California · 14306 days ago · 2 km deep · 86 km away
  8. 2.06 km N of Burney, California · 14307 days ago · 14 km deep · 30 km away
  9. 2.26 km N of Burney, California · 14307 days ago · 8 km deep · 32 km away
  10. 1.67 km N of Burney, California · 14307 days ago · 4 km deep · 32 km away
  11. 2.111 km N of Burney, California · 14312 days ago · 19 km deep · 35 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc10084921. Read Fri, Oct 2, 2026, 4:05 PM UTC.