Washington earthquakes

M1.6 earthquake 15 km S of Nile, Washington

A magnitude 1.6 earthquake struck 15 km S of Nile, Washington on Sun, Aug 3, 1986, 4:44 AM PDT (11:44 UTC), 9 km (5 mi) below the surface.

A larger quake followed: M2.8 10 km NE of Ashford, Washington. This one was a foreshock.

Tieton forecastMore in Washington

Map

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

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The earthquake

Magnitude
1.6 (md), micro
Local time
UTC
1986-08-03 11:44:34 UTC
Depth
8.8 km (5.5 mi), shallow
Epicenter
46.682° N, 120.969° W
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 1.3 km horizontally, 1.7 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
66°
Stations used
24

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 16 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 2.37 km SW of Royal City, Washington · 14665 days ago · 0 km deep · 99 km away
  2. 1.736 km SSE of Morton, Washington · 14662 days ago · 9 km deep · 95 km away
  3. 1.74 km NW of Mattawa, Washington · 14650 days ago · 4 km deep · 78 km away
  4. 2.07 km NE of Ashford, Washington · 14642 days ago · 4 km deep · 76 km away
  5. 2.810 km NE of Ashford, Washington · 14641 days ago · 11 km deep · 76 km away
  6. 1.95 km NW of Mattawa, Washington · 14633 days ago · 0 km deep · 78 km away
  7. 1.65 km NW of Mattawa, Washington · 14628 days ago · 0 km deep · 78 km away
  8. 1.74 km NW of Mattawa, Washington · 14612 days ago · 1 km deep · 79 km away
  9. 2.16 km NW of Mattawa, Washington · 14612 days ago · 2 km deep · 77 km away
  10. 2.410 km NNW of Mattawa, Washington · 14611 days ago · 5 km deep · 78 km away
  11. 1.97 km NW of Mattawa, Washington · 14610 days ago · 0 km deep · 77 km away
  12. 2.46 km NW of Mattawa, Washington · 14610 days ago · 0 km deep · 77 km away
  13. 2.04 km NW of Mattawa, Washington · 14610 days ago · 4 km deep · 79 km away
  14. 1.67 km NW of Mattawa, Washington · 14609 days ago · 1 km deep · 76 km away
  15. 1.56 km NW of Mattawa, Washington · 14609 days ago · 3 km deep · 77 km away
  16. 1.75 km NW of Mattawa, Washington · 14609 days ago · 2 km deep · 77 km away

Before

  1. 1.72 km SSW of White Swan, Washington · 14668 days ago · -1 km deep · 40 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10209883. Read Sun, Sep 27, 2026, 11:04 PM UTC.