California earthquakes

M1.8 earthquake 16 km ESE of Grenada, California

A magnitude 1.8 earthquake struck 16 km ESE of Grenada, California on Tue, Sep 3, 1985, 1:42 PM PDT (20:42 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.8 1 km ENE of Lakehead, California. This one was a foreshock.

Weed 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
1985-09-03 20:42:12 UTC
Depth
-0.3 km (-0.2 mi), shallow
Epicenter
41.597° N, 122.338° 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 7.2 km horizontally, 2.9 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
271°, poorly surrounded by stations
Stations used
4

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 14 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 1.74 km SE of Montgomery Creek, California · 14994 days ago · 17 km deep · 94 km away
  2. 1.721 km SW of Edgewood, California · 14993 days ago · 4 km deep · 38 km away
  3. 2.19 km ESE of Carrick, California · 14992 days ago · -2 km deep · 20 km away
  4. 2.214 km SW of Trinity Center, California · 14991 days ago · 8 km deep · 88 km away
  5. 1.75 km NNE of Tennant, California · 14991 days ago · 6 km deep · 37 km away
  6. 2.37 km SSE of Trinity Center, California · 14983 days ago · 4 km deep · 80 km away
  7. 1.624 km NW of McArthur, California · 14983 days ago · 4 km deep · 75 km away
  8. 1.813 km N of French Gulch, California · 14972 days ago · 40 km deep · 89 km away
  9. 2.115 km SE of McCloud, California · 14970 days ago · 11 km deep · 56 km away
  10. 1.713 km ESE of Grenada, California · 14961 days ago · 3 km deep · 3 km away
  11. 1.612 km ESE of Grenada, California · 14961 days ago · 3 km deep · 4 km away
  12. 1.99 km NNW of Cassel, California · 14947 days ago · 16 km deep · 91 km away
  13. 2.61 km ESE of Lakehead, California · 14941 days ago · 19 km deep · 77 km away
  14. 2.81 km ENE of Lakehead, California · 14940 days ago · 18 km deep · 76 km away

Before

  1. 1.613 km E of Carrick, California · 15009 days ago · 3 km deep · 19 km away
  2. 2.18 km ESE of Carrick, California · 15010 days ago · -2 km deep · 20 km away
  3. 2.113 km ESE of Carrick, California · 15010 days ago · 2 km deep · 22 km away
  4. 2.18km NNW of French Gulch, CA · 15021 days ago · 19 km deep · 95 km away
  5. 1.611 km WNW of Burney, California · 15025 days ago · 4 km deep · 87 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc55356. Read Sun, Sep 27, 2026, 10:23 PM UTC.