California earthquakes

M1.8 earthquake 2 km E of Palermo, California

A magnitude 1.8 earthquake struck 2 km E of Palermo, California on Tue, Jul 4, 1978, 7:07 PM PDT (02:07 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.3 4 km W of Bangor, California. This one was a foreshock.

Palermo 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
1978-07-05 02:07:33 UTC
Depth
7.1 km (4.4 mi), shallow
Epicenter
39.432° N, 121.504° 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 0.4 km horizontally, 0.7 km in depth
Magnitude uncertainty
±0.13
Depth from
From location
Station coverage gap
84°
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: 34 in the 60 days after this one and 10 in the 30 days before it.

After

  1. 2.64 km SE of Palermo, California · 17611 days ago · 6 km deep · 3 km away
  2. 2.24 km SE of Palermo, California · 17611 days ago · 6 km deep · 3 km away
  3. 3.24 km SE of Palermo, California · 17611 days ago · 7 km deep · 3 km away
  4. 2.44 km SE of Palermo, California · 17611 days ago · 6 km deep · 3 km away
  5. 3.04 km SE of Palermo, California · 17611 days ago · 7 km deep · 3 km away
  6. 2.04 km SE of Palermo, California · 17611 days ago · 6 km deep · 3 km away
  7. 2.24 km SE of Palermo, California · 17611 days ago · 6 km deep · 3 km away
  8. 2.64 km SE of Palermo, California · 17610 days ago · 6 km deep · 3 km away
  9. 2.36 km NE of Loma Rica, California · 17610 days ago · 6 km deep · 16 km away
  10. 2.216 km ENE of Willows, California · 17609 days ago · 20 km deep · 46 km away
  11. 1.85 km ESE of Palermo, California · 17608 days ago · 5 km deep · 3 km away
  12. 2.95 km ESE of Palermo, California · 17606 days ago · 5 km deep · 3 km away
  13. 2.03 km SE of Palermo, California · 17603 days ago · 6 km deep · 3 km away
  14. 1.92 km N of Palermo, California · 17601 days ago · 8 km deep · 4 km away
  15. 3.34 km W of Bangor, California · 17598 days ago · 5 km deep · 7 km away
  16. 1.65 km W of Bangor, California · 17597 days ago · 5 km deep · 6 km away
  17. 1.76 km WSW of Plumas Eureka (historical), California · 17593 days ago · -1 km deep · 71 km away
  18. 1.93 km SE of Willows, California · 17592 days ago · 20 km deep · 57 km away
  19. 1.74 km ESE of Palermo, California · 17589 days ago · 5 km deep · 2 km away
  20. 1.710 km ENE of Clearlake Oaks, California · 17586 days ago · -1 km deep · 99 km away
  21. 2.21 km ESE of South Oroville, California · 17575 days ago · 3 km deep · 7 km away
  22. 2.56 km ESE of Bucks Lake, California · 17574 days ago · 0 km deep · 56 km away
  23. 2.111 km NNE of Clipper Mills, California · 17574 days ago · 15 km deep · 40 km away
  24. 1.810 km W of La Porte, California · 17574 days ago · 8 km deep · 42 km away
  25. 1.54 km WSW of Granite Bay, California · 17569 days ago · 11 km deep · 80 km away
  26. 2.04 km S of Oroville East, California · 17567 days ago · 2 km deep · 5 km away
  27. 2.35 km SE of Bucks Lake, California · 17566 days ago · 1 km deep · 54 km away
  28. 1.62 km NNE of Little Grass Valley, California · 17565 days ago · 9 km deep · 57 km away
  29. 1.87 km SW of Whitehawk, California · 17564 days ago · 18 km deep · 81 km away
  30. 1.81 km E of Oroville East, California · 17564 days ago · 11 km deep · 9 km away
  31. 2.74 km SE of Palermo, California · 17563 days ago · 6 km deep · 3 km away
  32. 3.20 km WSW of Monument Hills, California · 17562 days ago · 8 km deep · 92 km away
  33. 2.22 km SSE of Monument Hills, California · 17560 days ago · 9 km deep · 94 km away
  34. 1.65 km WNW of Bangor, California · 17559 days ago · 5 km deep · 5 km away

Before

  1. 2.03 km E of Palermo, California · 17618 days ago · 7 km deep · 0 km away
  2. 1.62 km ESE of Folsom, California · 17623 days ago · 10 km deep · 90 km away
  3. 1.64 km SSW of Hamilton City, California · 17624 days ago · 17 km deep · 55 km away
  4. 2.05 km ESE of Palermo, California · 17624 days ago · 6 km deep · 2 km away
  5. 1.64 km SE of Palermo, California · 17634 days ago · 4 km deep · 3 km away
  6. 1.63 km NE of Palermo, California · 17634 days ago · 4 km deep · 3 km away
  7. 1.67 km NNE of Durham, California · 17636 days ago · 20 km deep · 37 km away
  8. 2.35 km E of Los Molinos, California · 17643 days ago · -1 km deep · 79 km away
  9. 1.66 km WNW of Nevada City, California · 17645 days ago · 9 km deep · 39 km away
  10. 1.57 km NNE of Rough and Ready, California · 17645 days ago · 11 km deep · 38 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1040921. Read Sun, Sep 27, 2026, 3:04 AM UTC.