California earthquakes

M2.8 earthquake 15 km W of Mount Hebron, California

A magnitude 2.8 earthquake struck 15 km W of Mount Hebron, California on Wed, Aug 11, 1982, 12:46 PM PDT (19:46 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.0 16 km W of Macdoel, 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
2.8 (md), micro
Local time
UTC
1982-08-11 19:46:07 UTC
Depth
6.6 km (4.1 mi), shallow
Epicenter
41.789° N, 122.193° 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 1.6 km horizontally, 3.0 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
282°, 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: 13 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.615 km W of Mount Hebron, California · 16113 days ago · 7 km deep · 0 km away
  2. 3.016 km W of Macdoel, California · 16113 days ago · 7 km deep · 2 km away
  3. 2.018 km N of Big Bend, California · 16113 days ago · 9 km deep · 70 km away
  4. 1.615 km NNE of McCloud, California · 16105 days ago · 3 km deep · 45 km away
  5. 1.710 km E of Lakehead, California · 16102 days ago · 5 km deep · 97 km away
  6. 3.222 km ESE of Tennant, California · 16097 days ago · 2 km deep · 53 km away
  7. 2.028 km NW of McArthur, California · 16094 days ago · 12 km deep · 77 km away
  8. 1.617 km WSW of Klamath Falls, Oregon · 16086 days ago · 18 km deep · 45 km away
  9. 2.026 km E of Tennant, California · 16082 days ago · 1 km deep · 55 km away
  10. 2.128 km E of Tennant, California · 16076 days ago · -1 km deep · 56 km away
  11. 2.717 km WNW of McArthur, California · 16063 days ago · 3 km deep · 90 km away
  12. 2.37 km WSW of Klamath Falls, Oregon · 16059 days ago · -1 km deep · 53 km away
  13. 2.110 km NNE of McCloud, California · 16054 days ago · 0 km deep · 50 km away

Before

  1. 2.48 km SSW of Mount Hebron, California · 16121 days ago · 8 km deep · 14 km away
  2. 2.813 km SSE of Dorris, California · 16121 days ago · 16 km deep · 31 km away
  3. 2.713 km N of McCloud, California · 16135 days ago · 10 km deep · 46 km away
  4. 1.611 km N of McCloud, California · 16135 days ago · 25 km deep · 48 km away
  5. 1.819 km ENE of McCloud, California · 16135 days ago · 3 km deep · 55 km away
  6. 2.012 km N of McCloud, California · 16135 days ago · 8 km deep · 47 km away
  7. 1.810 km NNE of Mount Shasta, California · 16135 days ago · 5 km deep · 45 km away
  8. 2.019 km ESE of McCloud, California · 16137 days ago · 11 km deep · 69 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc1077355. Read Wed, Sep 23, 2026, 1:00 AM UTC.