Washington earthquakes

M1.8 earthquake 12 km W of Entiat, Washington

A magnitude 1.8 earthquake struck 12 km W of Entiat, Washington on Thu, Mar 28, 1985, 3:46 AM PST (11:46 UTC), 2 km (1 mi) below the surface.

A larger quake followed: M2.7 3 km NNE of Waterville, 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), micro
Local time
UTC
1985-03-28 11:46:20 UTC
Depth
1.7 km (1.0 mi), shallow
Epicenter
47.669° N, 120.378° 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 0.8 km horizontally, 3.5 km in depth
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
115°
Stations used
21

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 23 in the 60 days after this one and 4 in the 30 days before it.

After

  1. 1.513 km ENE of Mansfield, Washington · 15143 days ago · 0 km deep · 71 km away
  2. 1.57 km NNW of Entiat, Washington · 15139 days ago · 3 km deep · 14 km away
  3. 2.73 km NNE of Waterville, Washington · 15138 days ago · 0 km deep · 24 km away
  4. 2.024 km SE of Kittitas, Washington · 15135 days ago · 2 km deep · 97 km away
  5. 3.213 km SE of Kittitas, Washington · 15131 days ago · 5 km deep · 86 km away
  6. 1.813 km SE of Kittitas, Washington · 15131 days ago · 18 km deep · 85 km away
  7. 1.816 km ESE of Verlot, Washington · 15130 days ago · 4 km deep · 98 km away
  8. 2.022 km ESE of Malott, Washington · 15119 days ago · 0 km deep · 90 km away
  9. 1.515 km SW of Disautel, Washington · 15112 days ago · 0 km deep · 100 km away
  10. 1.512 km S of South Cle Elum, Washington · 15112 days ago · 1 km deep · 79 km away
  11. 2.114 km SSW of Vantage, Washington · 15111 days ago · 2 km deep · 97 km away
  12. 2.014 km SSW of Vantage, Washington · 15111 days ago · 1 km deep · 96 km away
  13. 1.614 km WNW of Mattawa, Washington · 15111 days ago · 5 km deep · 98 km away
  14. 2.315 km NW of Mattawa, Washington · 15110 days ago · 2 km deep · 98 km away
  15. 1.814 km NW of Mattawa, Washington · 15110 days ago · -1 km deep · 98 km away
  16. 2.114 km NW of Mattawa, Washington · 15110 days ago · 3 km deep · 98 km away
  17. 1.614 km NW of Mattawa, Washington · 15110 days ago · 0 km deep · 98 km away
  18. 1.52 km NNE of Chelan Falls, Washington · 15099 days ago · -1 km deep · 34 km away
  19. 2.116 km E of Mansfield, Washington · 15099 days ago · 1 km deep · 73 km away
  20. 1.614 km NW of Mattawa, Washington · 15097 days ago · -1 km deep · 98 km away
  21. 2.413 km NNW of Vantage, Washington · 15096 days ago · 0 km deep · 72 km away
  22. 2.216 km SE of Okanogan, Washington · 15095 days ago · 5 km deep · 98 km away
  23. 1.613 km SSW of Vantage, Washington · 15095 days ago · 4 km deep · 96 km away

Before

  1. 2.634 km NNW of Leavenworth, Washington · 15157 days ago · 1 km deep · 43 km away
  2. 2.314 km SSW of Vantage, Washington · 15159 days ago · 3 km deep · 97 km away
  3. 1.915 km NNW of Vantage, Washington · 15166 days ago · -1 km deep · 71 km away
  4. 1.93 km ESE of Entiat, Washington · 15174 days ago · 0 km deep · 16 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10190128. Read Tue, Sep 22, 2026, 5:35 AM UTC.