Oregon earthquakes

M1.8 earthquake 17 km NNW of Shaniko, Oregon

A magnitude 1.8 earthquake struck 17 km NNW of Shaniko, Oregon on Sun, Aug 23, 1987, 8:08 PM PDT (03:08 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M3.1 10 km ESE of Condon, Oregon. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
1.8 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1987-08-24 03:08:32 UTC
Depth
17.5 km (10.9 mi), shallow
Epicenter
45.151° N, 120.845° 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 1.0 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
84°
Stations used
13

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 11 in the 30 days before it.

After

  1. 2.48 km ESE of Spray, Oregon · 14272 days ago · 12 km deep · 99 km away
  2. 3.110 km ESE of Condon, Oregon · 14269 days ago · 12 km deep · 61 km away
  3. 1.910 km ESE of Condon, Oregon · 14269 days ago · 16 km deep · 61 km away
  4. 2.312 km ESE of Condon, Oregon · 14268 days ago · 17 km deep · 63 km away
  5. 2.410 km ESE of Condon, Oregon · 14268 days ago · -1 km deep · 61 km away
  6. 1.79 km SE of Condon, Oregon · 14265 days ago · -1 km deep · 60 km away
  7. 1.821 km NNE of Goldendale, Washington · 14255 days ago · 12 km deep · 94 km away
  8. 1.53 km NNW of Mount Hood Village, Oregon · 14253 days ago · -1 km deep · 94 km away
  9. 2.711 km ESE of Condon, Oregon · 14247 days ago · 19 km deep · 62 km away
  10. 2.010 km SE of Condon, Oregon · 14235 days ago · 2 km deep · 60 km away

Before

  1. 1.518 km E of Maupin, Oregon · 14285 days ago · 15 km deep · 1 km away
  2. 1.818 km NNW of Shaniko, Oregon · 14287 days ago · 13 km deep · 0 km away
  3. 1.816 km E of Maupin, Oregon · 14288 days ago · 22 km deep · 2 km away
  4. 1.716 km E of Maupin, Oregon · 14288 days ago · 20 km deep · 3 km away
  5. 2.117 km ESE of Maupin, Oregon · 14290 days ago · 24 km deep · 1 km away
  6. 1.516 km E of Maupin, Oregon · 14293 days ago · 16 km deep · 3 km away
  7. 1.616 km E of Maupin, Oregon · 14294 days ago · 24 km deep · 3 km away
  8. 2.417 km E of Maupin, Oregon · 14299 days ago · 27 km deep · 1 km away
  9. 1.616 km E of Maupin, Oregon · 14299 days ago · 24 km deep · 3 km away
  10. 1.816 km E of Maupin, Oregon · 14300 days ago · 25 km deep · 3 km away
  11. 2.47 km E of Government Camp, Oregon · 14311 days ago · 5 km deep · 66 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10224838. Read Thu, Oct 1, 2026, 11:10 PM UTC.