M1.9 earthquake 16 km W of Quincy, Washington
A magnitude 1.9 earthquake struck 16 km W of Quincy, Washington on Tue, Aug 29, 1989, 11:22 PM PDT (06:22 UTC), -1 km (-1 mi) below the surface.
A larger quake followed: M2.7 4 km NW of Waterville, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.9 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1989-08-30 06:22:15 UTC
- Depth
- -0.8 km (-0.5 mi), shallow
- Epicenter
- 47.236° N, 120.072° 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 0.2 km horizontally, 1.5 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- Operator assigned
- Station coverage gap
- 74°
- Stations used
- 20
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 4 in the 30 days before it.
After
- 1.914 km ESE of Royal City, Washington · 13540 days ago · 0 km deep · 64 km away
- 1.58 km W of Entiat, Washington · 13538 days ago · 2 km deep · 54 km away
- 1.51 km E of Entiat, Washington · 13526 days ago · 4 km deep · 50 km away
- 2.74 km NW of Waterville, Washington · 13513 days ago · 6 km deep · 49 km away
- 1.88 km WNW of Vantage, Washington · 13512 days ago · 1 km deep · 30 km away
- 1.6Washington · 13509 days ago · 0 km deep · 25 km away
- 1.923 km E of Desert Aire, Washington · 13500 days ago · 0 km deep · 74 km away
- 2.14 km NNE of Waterville, Washington · 13496 days ago · 6 km deep · 50 km away
- 2.03 km NNW of Entiat, Washington · 13495 days ago · -1 km deep · 53 km away
Before
- 1.73 km NNW of Waterville, Washington · 13566 days ago · 7 km deep · 49 km away
- 2.74 km SSE of Entiat, Washington · 13569 days ago · 8 km deep · 46 km away
- 2.04 km WSW of George, Washington · 13574 days ago · 0 km deep · 23 km away
- 2.40 km N of Cliffdell, Washington · 13576 days ago · 5 km deep · 82 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10252598. Read Thu, Oct 1, 2026, 10:58 PM UTC.