California earthquakes

M1.8 earthquake 4 km NW of Tobin, California

A magnitude 1.8 earthquake struck 4 km NW of Tobin, California on Mon, Mar 30, 1981, 3:57 AM PST (11:57 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.3 5 km NE of Canyondam, California. This one was a foreshock.

Magalia forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.8 (md), micro
Local time
UTC
1981-03-30 11:57:26 UTC
Depth
3.2 km (2.0 mi), shallow
Epicenter
39.967° N, 121.343° 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 3.1 km horizontally, 7.9 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
278°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 27 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 2.212 km SE of Paskenta, California · 16617 days ago · 10 km deep · 96 km away
  2. 3.35 km NE of Canyondam, California · 16610 days ago · 15 km deep · 37 km away
  3. 2.14 km SE of Palermo, California · 16610 days ago · 6 km deep · 64 km away
  4. 1.85 km SE of Palermo, California · 16609 days ago · 6 km deep · 65 km away
  5. 1.810 km SE of Mineral, California · 16606 days ago · 6 km deep · 38 km away
  6. 2.19 km SE of Mineral, California · 16605 days ago · 3 km deep · 38 km away
  7. 1.815 km ENE of Mineral, California · 16600 days ago · 3 km deep · 50 km away
  8. 2.45 km SE of Palermo, California · 16598 days ago · 6 km deep · 65 km away
  9. 2.27 km WNW of Sierra City, California · 16593 days ago · 10 km deep · 69 km away
  10. 2.06 km ESE of Butte Meadows, California · 16591 days ago · 5 km deep · 16 km away
  11. 1.75 km WNW of Bangor, California · 16590 days ago · 6 km deep · 63 km away
  12. 2.413 km SSW of Lake Almanor West, California · 16586 days ago · 5 km deep · 19 km away
  13. 1.93 km NNW of Old Station, California · 16585 days ago · 3 km deep · 82 km away
  14. 3.27 km SW of Artois, California · 16580 days ago · 19 km deep · 90 km away
  15. 1.617 km ENE of Shingletown, California · 16580 days ago · 1 km deep · 73 km away
  16. 1.513 km NNE of Mineral, California · 16575 days ago · -1 km deep · 57 km away
  17. 2.70 km WSW of Clipper Mills, California · 16573 days ago · 11 km deep · 51 km away
  18. 3.1Northern California · 16571 days ago · -1 km deep · 60 km away
  19. 2.53 km SW of Clipper Mills, California · 16571 days ago · 12 km deep · 52 km away
  20. 2.313 km NNE of Mineral, California · 16570 days ago · 2 km deep · 58 km away
  21. 1.613 km NNE of Mineral, California · 16568 days ago · 3 km deep · 58 km away
  22. 2.50 km SSW of Clipper Mills, California · 16567 days ago · 12 km deep · 51 km away
  23. 1.912 km WSW of Chester, California · 16566 days ago · 1 km deep · 31 km away
  24. 2.013 km SW of Lake Almanor West, California · 16566 days ago · 8 km deep · 23 km away
  25. 1.72 km W of Nord, California · 16565 days ago · 20 km deep · 59 km away
  26. 2.91 km SW of Clipper Mills, California · 16562 days ago · 14 km deep · 51 km away
  27. 1.84 km ESE of Manton, California · 16562 days ago · 22 km deep · 65 km away

Before

  1. 1.69 km WNW of Plumas Eureka (historical), California · 16624 days ago · 7 km deep · 50 km away
  2. 2.711 km N of Princeton, California · 16625 days ago · 19 km deep · 76 km away
  3. 2.37 km SSW of Hamilton City, California · 16633 days ago · 18 km deep · 67 km away
  4. 2.34 km SE of Palermo, California · 16633 days ago · 8 km deep · 63 km away
  5. 2.49 km SW of Lake Almanor West, California · 16635 days ago · 4 km deep · 23 km away
  6. 2.7Northern California · 16637 days ago · 7 km deep · 64 km away
  7. 1.9Northern California · 16637 days ago · 17 km deep · 44 km away
  8. 2.34 km SSW of Prattville, California · 16638 days ago · -1 km deep · 27 km away
  9. 2.42 km SW of Old Station, California · 16639 days ago · 4 km deep · 77 km away
  10. 1.9Northern California · 16644 days ago · 16 km deep · 49 km away
  11. 2.58 km SW of Clio, California · 16646 days ago · 14 km deep · 67 km away
  12. 1.717 km N of Princeton, California · 16648 days ago · 18 km deep · 72 km away

Earthquakes todayCalifornia earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1061873. Read Tue, Sep 29, 2026, 11:10 PM UTC.