M3.6 earthquake 24 km ESE of Grass Valley, Oregon
A magnitude 3.6 earthquake struck 24 km ESE of Grass Valley, Oregon on Sat, Oct 9, 1976, 10:41 PM PDT (05:41 UTC), 15 km (9 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.6 (md), minor
- Local time
- UTC
- 1976-10-10 05:41:11 UTC
- Depth
- 14.7 km (9.1 mi), shallow
- Epicenter
- 45.270° N, 120.500° W
- Region
- Oregon
- 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 0.9 km horizontally, 2.2 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- Operator assigned
- Station coverage gap
- 306°, poorly surrounded by stations
- Stations used
- 10
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 0 in the 60 days after this one and 0 in the 30 days before it.
None recorded.
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10842343. Read Tue, Sep 22, 2026, 7:07 AM UTC.