California earthquakes

M2.2 earthquake 16 km ENE of Willows, California

A magnitude 2.2 earthquake struck 16 km ENE of Willows, California on Wed, Jul 12, 1978, 3:07 AM PDT (10:07 UTC), 20 km (13 mi) below the surface.

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

Willows 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
2.2 (md), micro
Local time
UTC
1978-07-12 10:07:47 UTC
Depth
20.3 km (12.6 mi), shallow
Epicenter
39.567° N, 122.007° 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, 1.0 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
232°, poorly surrounded by stations
Stations used
16

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 28 in the 60 days after this one and 21 in the 30 days before it.

After

  1. 1.85 km ESE of Palermo, California · 17608 days ago · 5 km deep · 48 km away
  2. 2.95 km ESE of Palermo, California · 17606 days ago · 5 km deep · 48 km away
  3. 2.03 km SE of Palermo, California · 17603 days ago · 6 km deep · 46 km away
  4. 2.00 km N of Kelseyville, California · 17601 days ago · 3 km deep · 97 km away
  5. 1.92 km N of Palermo, California · 17601 days ago · 8 km deep · 42 km away
  6. 3.34 km W of Bangor, California · 17598 days ago · 5 km deep · 51 km away
  7. 1.65 km W of Bangor, California · 17597 days ago · 5 km deep · 51 km away
  8. 3.07 km NNW of Rancho Tehama Reserve, California · 17593 days ago · 18 km deep · 68 km away
  9. 2.39 km WNW of Rancho Tehama Reserve, California · 17593 days ago · 22 km deep · 69 km away
  10. 1.98 km WSW of Rancho Tehama Reserve, California · 17593 days ago · 11 km deep · 63 km away
  11. 1.93 km SE of Willows, California · 17592 days ago · 20 km deep · 15 km away
  12. 1.74 km ESE of Palermo, California · 17589 days ago · 5 km deep · 47 km away
  13. 1.710 km ENE of Clearlake Oaks, California · 17586 days ago · -1 km deep · 74 km away
  14. 1.82 km ESE of Clear Lake Riviera, California · 17577 days ago · 1 km deep · 91 km away
  15. 1.52 km ESE of Clear Lake Riviera, California · 17577 days ago · 1 km deep · 91 km away
  16. 2.21 km ESE of South Oroville, California · 17576 days ago · 3 km deep · 41 km away
  17. 2.56 km ESE of Bucks Lake, California · 17574 days ago · 0 km deep · 82 km away
  18. 2.111 km NNE of Clipper Mills, California · 17574 days ago · 15 km deep · 76 km away
  19. 1.810 km W of La Porte, California · 17574 days ago · 8 km deep · 78 km away
  20. 1.56 km ESE of Hidden Valley Lake, California · 17573 days ago · 2 km deep · 97 km away
  21. 2.04 km S of Oroville East, California · 17567 days ago · 2 km deep · 47 km away
  22. 2.35 km SE of Bucks Lake, California · 17566 days ago · 1 km deep · 79 km away
  23. 1.62 km NNE of Little Grass Valley, California · 17565 days ago · 9 km deep · 91 km away
  24. 1.81 km E of Oroville East, California · 17564 days ago · 11 km deep · 47 km away
  25. 2.74 km SE of Palermo, California · 17563 days ago · 6 km deep · 47 km away
  26. 1.65 km WNW of Bangor, California · 17559 days ago · 5 km deep · 50 km away
  27. 2.320 km NE of Potter Valley, California · 17550 days ago · 6 km deep · 81 km away
  28. 2.519 km NE of Potter Valley, California · 17550 days ago · 5 km deep · 82 km away

Before

  1. 2.36 km NE of Loma Rica, California · 17610 days ago · 6 km deep · 61 km away
  2. 2.64 km SE of Palermo, California · 17610 days ago · 6 km deep · 46 km away
  3. 2.24 km SE of Palermo, California · 17611 days ago · 6 km deep · 47 km away
  4. 2.04 km SE of Palermo, California · 17611 days ago · 6 km deep · 47 km away
  5. 3.04 km SE of Palermo, California · 17611 days ago · 7 km deep · 47 km away
  6. 2.44 km SE of Palermo, California · 17611 days ago · 6 km deep · 47 km away
  7. 3.24 km SE of Palermo, California · 17611 days ago · 7 km deep · 47 km away
  8. 2.24 km SE of Palermo, California · 17611 days ago · 6 km deep · 47 km away
  9. 2.64 km SE of Palermo, California · 17611 days ago · 6 km deep · 47 km away
  10. 1.82 km E of Palermo, California · 17616 days ago · 7 km deep · 46 km away
  11. 1.817 km NNE of Nice, California · 17617 days ago · 9 km deep · 72 km away
  12. 2.317 km NNE of Nice, California · 17617 days ago · 11 km deep · 72 km away
  13. 2.03 km E of Palermo, California · 17618 days ago · 7 km deep · 46 km away
  14. 1.64 km SSW of Hamilton City, California · 17624 days ago · 17 km deep · 16 km away
  15. 2.05 km ESE of Palermo, California · 17624 days ago · 6 km deep · 48 km away
  16. 2.413 km N of Potter Valley, California · 17631 days ago · 8 km deep · 98 km away
  17. 1.64 km SE of Palermo, California · 17634 days ago · 4 km deep · 47 km away
  18. 1.63 km NE of Palermo, California · 17634 days ago · 4 km deep · 44 km away
  19. 1.7Northern California · 17636 days ago · 11 km deep · 71 km away
  20. 1.67 km NNE of Durham, California · 17636 days ago · 20 km deep · 26 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1041005. Read Sun, Sep 27, 2026, 3:30 AM UTC.