M1.6 earthquake 12 km ESE of Grenada, California
A magnitude 1.6 earthquake struck 12 km ESE of Grenada, California on Sat, Oct 12, 1985, 1:39 AM PDT (08:39 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
- 1.6 (md), micro
- Local time
- UTC
- 1985-10-12 08:39:59 UTC
- Depth
- 2.6 km (1.6 mi), shallow
- Epicenter
- 41.607° N, 122.379° 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 3.1 km horizontally, 10.1 km in depth
- Magnitude uncertainty
- ±0.33
- Depth from
- From location
- Station coverage gap
- 286°, poorly surrounded by stations
- Stations used
- 3
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 6 in the 30 days before it.
After
- 1.99 km NNW of Cassel, California · 14942 days ago · 16 km deep · 95 km away
- 2.61 km ESE of Lakehead, California · 14936 days ago · 19 km deep · 78 km away
- 2.81 km ENE of Lakehead, California · 14935 days ago · 18 km deep · 77 km away
- 1.521 km W of Trinity Center, California · 14933 days ago · 20 km deep · 86 km away
- 1.85 km S of Mount Shasta, California · 14916 days ago · 0 km deep · 39 km away
- 1.816 km N of Big Bend, California · 14910 days ago · 3 km deep · 63 km away
- 1.710 km WNW of Trinity Center, California · 14905 days ago · 4 km deep · 76 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 · 73 km away
Before
- 1.713 km ESE of Grenada, California · 14956 days ago · 3 km deep · 2 km away
- 2.115 km SE of McCloud, California · 14965 days ago · 11 km deep · 59 km away
- 1.813 km N of French Gulch, California · 14967 days ago · 40 km deep · 89 km away
- 1.624 km NW of McArthur, California · 14978 days ago · 4 km deep · 78 km away
- 2.37 km SSE of Trinity Center, California · 14978 days ago · 4 km deep · 80 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 nc1132157. Read Wed, Sep 23, 2026, 12:52 AM UTC.