M1.8 earthquake 1 km WNW of Oak Harbor, Washington
A magnitude 1.8 earthquake struck 1 km WNW of Oak Harbor, Washington on Sun, Dec 30, 1979, 8:54 AM PST (16:54 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M2.2 4 km ENE of Manchester, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.8 (md), micro
- Local time
- UTC
- 1979-12-30 16:54:59 UTC
- Depth
- 33.5 km (20.8 mi), shallow
- Epicenter
- 48.300° N, 122.668° W
- Region
- Washington
- 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, 1.6 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 181°, poorly surrounded by stations
- Stations used
- 12
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 5 in the 30 days before it.
After
- 1.55 km NW of Gorst, Washington · 17055 days ago · 14 km deep · 83 km away
- 1.53 km W of Fobes Hill, Washington · 17049 days ago · 21 km deep · 54 km away
- 1.55 km NE of Lake McMurray, Washington · 17039 days ago · 13 km deep · 37 km away
- 1.67 km ENE of Lofall, Washington · 17038 days ago · 22 km deep · 52 km away
- 1.61 km E of Clyde Hill, Washington · 17037 days ago · 24 km deep · 82 km away
- 1.611 km ENE of Acme, Washington · 17036 days ago · 1 km deep · 67 km away
- 2.24 km ENE of Manchester, Washington · 17009 days ago · 22 km deep · 81 km away
Before
- 1.54 km NNE of Lake Marcel-Stillwater, Washington · 17071 days ago · 10 km deep · 85 km away
- 1.56 km NNW of Port Townsend, Washington · 17073 days ago · 21 km deep · 18 km away
- 1.74 km ESE of Edison, Washington · 17082 days ago · 22 km deep · 34 km away
- 2.12 km S of Ames Lake, Washington · 17083 days ago · 17 km deep · 93 km away
- 2.22 km E of Edison, Washington · 17094 days ago · 25 km deep · 35 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10851748. Read Tue, Sep 22, 2026, 7:09 AM UTC.