M2.0 earthquake 10 km WNW of Entiat, Washington
A magnitude 2.0 earthquake struck 10 km WNW of Entiat, Washington on Mon, Aug 17, 1987, 5:35 AM PDT (12:35 UTC), -1 km (-1 mi) below the surface.
A larger quake followed: M2.6 16 km NNW of Vantage, 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
- 1987-08-17 12:35:50 UTC
- Depth
- -1.2 km (-0.7 mi), shallow
- Epicenter
- 47.720° N, 120.329° 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 0.1 km horizontally, 0.1 km in depth
- Magnitude uncertainty
- ±0.10
- Depth from
- Operator assigned
- Station coverage gap
- 94°
- Stations used
- 23
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 4 in the 30 days before it.
After
- 2.06 km NE of Thorp, Washington · 14287 days ago · 8 km deep · 71 km away
- 2.27 km SSE of Okanogan, Washington · 14280 days ago · 0 km deep · 87 km away
- 2.136 km NE of Skykomish, Washington · 14274 days ago · 0 km deep · 58 km away
- 1.736 km NE of Skykomish, Washington · 14274 days ago · 0 km deep · 59 km away
- 1.75 km NNE of Entiat, Washington · 14261 days ago · -1 km deep · 12 km away
- 1.54 km N of Waterville, Washington · 14255 days ago · 2 km deep · 19 km away
- 1.513 km NE of Cliffdell, Washington · 14254 days ago · -1 km deep · 90 km away
- 2.09 km SSW of Chelan Falls, Washington · 14250 days ago · 2 km deep · 21 km away
- 2.041 km W of Winthrop, Washington · 14250 days ago · 4 km deep · 83 km away
- 2.112 km SSE of Okanogan, Washington · 14249 days ago · -1 km deep · 85 km away
- 1.516 km NNW of Vantage, Washington · 14245 days ago · 0 km deep · 74 km away
- 2.616 km NNW of Vantage, Washington · 14241 days ago · 0 km deep · 74 km away
Before
- 2.24 km SW of Entiat, Washington · 14300 days ago · -1 km deep · 10 km away
- 1.66 km WSW of Easton, Washington · 14303 days ago · 20 km deep · 90 km away
- 1.52 km SE of Entiat, Washington · 14314 days ago · 3 km deep · 13 km away
- 1.822 km ENE of Mansfield, Washington · 14317 days ago · 8 km deep · 74 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10223448. Read Fri, Oct 2, 2026, 9:21 AM UTC.