M1.7 earthquake 13 km ESE of Grenada, California
A magnitude 1.7 earthquake struck 13 km ESE of Grenada, California on Sat, Oct 12, 1985, 1:37 AM PDT (08:37 UTC), 3 km (2 mi) below the surface.
A larger quake followed: M1.9 9 km NNW of Cassel, California. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.7 (md), micro
- Local time
- UTC
- 1985-10-12 08:37:30 UTC
- Depth
- 3.0 km (1.8 mi), shallow
- Epicenter
- 41.593° N, 122.372° W
- Region
- California
- 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, 8.6 km in depth
- Magnitude uncertainty
- ±0.14
- Depth from
- From location
- Station coverage gap
- 226°, 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: 10 in the 60 days after this one and 5 in the 30 days before it.
After
- 1.612 km ESE of Grenada, California · 14956 days ago · 3 km deep · 2 km away
- 1.99 km NNW of Cassel, California · 14942 days ago · 16 km deep · 93 km away
- 2.61 km ESE of Lakehead, California · 14936 days ago · 19 km deep · 77 km away
- 2.81 km ENE of Lakehead, California · 14935 days ago · 18 km deep · 76 km away
- 1.521 km W of Trinity Center, California · 14933 days ago · 20 km deep · 85 km away
- 1.85 km S of Mount Shasta, California · 14916 days ago · 0 km deep · 38 km away
- 1.816 km N of Big Bend, California · 14910 days ago · 3 km deep · 61 km away
- 1.710 km WNW of Trinity Center, California · 14905 days ago · 4 km deep · 75 km away
- 2.433 km NE of Trinity Village, California · 14901 days ago · 30 km deep · 93 km away
- 1.95 km N of Lakehead, California · 14899 days ago · 8 km deep · 71 km away
Before
- 2.115 km SE of McCloud, California · 14965 days ago · 11 km deep · 57 km away
- 1.813 km N of French Gulch, California · 14967 days ago · 40 km deep · 88 km away
- 1.624 km NW of McArthur, California · 14978 days ago · 4 km deep · 77 km away
- 2.37 km SSE of Trinity Center, California · 14978 days ago · 4 km deep · 79 km away
- 1.75 km NNE of Tennant, California · 14986 days ago · 6 km deep · 40 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event nc56783. Read Tue, Sep 22, 2026, 11:20 PM UTC.