Washington earthquakes

M1.8 earthquake 2 km SE of Entiat, Washington

A magnitude 1.8 earthquake struck 2 km SE of Entiat, Washington on Wed, Jul 31, 1991, 1:57 AM PDT (08:57 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.8 6 km SE of Kittitas, Washington. This one was a foreshock.

Entiat 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
1.8 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1991-07-31 08:57:02 UTC
Depth
3.8 km (2.3 mi), shallow
Epicenter
47.660° N, 120.177° 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 0.6 km horizontally, 1.6 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
50°
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: 20 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 1.621 km SW of South Wenatchee, Washington · 12845 days ago · 8 km deep · 52 km away
  2. 1.67 km SE of Kittitas, Washington · 12842 days ago · 2 km deep · 82 km away
  3. 2.86 km SE of Kittitas, Washington · 12842 days ago · 4 km deep · 81 km away
  4. 1.57 km SE of Kittitas, Washington · 12835 days ago · 3 km deep · 81 km away
  5. 1.55 km S of Royal City, Washington · 12835 days ago · 12 km deep · 99 km away
  6. 2.14 km SSE of Pateros, Washington · 12833 days ago · 9 km deep · 46 km away
  7. 2.47 km SE of Kittitas, Washington · 12829 days ago · 3 km deep · 82 km away
  8. 1.57 km SSE of Kittitas, Washington · 12829 days ago · 4 km deep · 83 km away
  9. 2.35 km NNE of Waterville, Washington · 12827 days ago · 5 km deep · 11 km away
  10. 1.56 km SE of Kittitas, Washington · 12826 days ago · 3 km deep · 82 km away
  11. 2.56 km SE of Kittitas, Washington · 12823 days ago · 3 km deep · 81 km away
  12. 1.96 km SE of Kittitas, Washington · 12822 days ago · 0 km deep · 81 km away
  13. 1.534 km W of Winthrop, Washington · 12814 days ago · -1 km deep · 97 km away
  14. 2.78 km SE of Kittitas, Washington · 12807 days ago · 4 km deep · 81 km away
  15. 2.67 km SE of Kittitas, Washington · 12806 days ago · 3 km deep · 82 km away
  16. 1.917 km S of Ellensburg, Washington · 12798 days ago · 5 km deep · 95 km away
  17. 1.57 km SSE of Kittitas, Washington · 12795 days ago · 5 km deep · 83 km away
  18. 2.17 km SE of Kittitas, Washington · 12795 days ago · 3 km deep · 82 km away
  19. 1.96 km SE of Kittitas, Washington · 12793 days ago · 3 km deep · 82 km away
  20. 1.78 km S of Leavenworth, Washington · 12788 days ago · 0 km deep · 38 km away

Before

  1. 2.09 km NNE of Waterville, Washington · 12850 days ago · 4 km deep · 13 km away
  2. 1.78 km N of Waterville, Washington · 12851 days ago · 2 km deep · 11 km away
  3. 1.67 km SE of Kittitas, Washington · 12861 days ago · 2 km deep · 82 km away
  4. 2.68 km SE of Kittitas, Washington · 12870 days ago · 4 km deep · 82 km away
  5. 2.6Washington · 12871 days ago · 4 km deep · 82 km away
  6. 2.07 km SE of Kittitas, Washington · 12872 days ago · 3 km deep · 81 km away
  7. 3.38 km SE of Kittitas, Washington · 12872 days ago · 3 km deep · 82 km away
  8. 2.17 km SE of Kittitas, Washington · 12872 days ago · 4 km deep · 81 km away
  9. 1.75 km SSE of Kittitas, Washington · 12872 days ago · 1 km deep · 82 km away
  10. 2.37 km SE of Kittitas, Washington · 12872 days ago · 3 km deep · 82 km away
  11. 3.47 km SE of Kittitas, Washington · 12872 days ago · 3 km deep · 81 km away
  12. 1.76 km SE of Kittitas, Washington · 12873 days ago · 3 km deep · 81 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10282928. Read Sat, Oct 3, 2026, 12:16 AM UTC.