M2.0 earthquake 5 km SSE of Mill Plain, Washington
A magnitude 2.0 earthquake struck 5 km SSE of Mill Plain, Washington on Sat, Apr 1, 1989, 2:32 PM PST (22:32 UTC), 9 km (6 mi) below the surface.
A larger quake followed: M2.2 20 km S of Morton, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.0 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1989-04-01 22:32:21 UTC
- Depth
- 8.9 km (5.5 mi), shallow
- Epicenter
- 45.593° N, 122.476° 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 0.8 km horizontally, 1.2 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- From location
- Station coverage gap
- 90°
- Stations used
- 30
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 0 in the 30 days before it.
After
- 1.737 km NNE of Amboy, Washington · 13693 days ago · 5 km deep · 71 km away
- 1.538 km NNE of Amboy, Washington · 13693 days ago · 3 km deep · 72 km away
- 2.220 km S of Morton, Washington · 13688 days ago · 11 km deep · 89 km away
- 1.936 km S of Morton, Washington · 13687 days ago · 1 km deep · 75 km away
- 1.738 km NNE of Amboy, Washington · 13681 days ago · 4 km deep · 71 km away
- 1.837 km NNE of Amboy, Washington · 13654 days ago · 4 km deep · 71 km away
- 1.623 km S of Morton, Washington · 13649 days ago · 10 km deep · 86 km away
- 1.821 km NNW of Amboy, Washington · 13644 days ago · 18 km deep · 56 km away
- 1.56 km NE of Amboy, Washington · 13643 days ago · 14 km deep · 40 km away
- 1.637 km NNE of Amboy, Washington · 13642 days ago · 5 km deep · 71 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10239033. Read Fri, Oct 2, 2026, 11:15 AM UTC.