Washington earthquakes

M2.1 earthquake 12 km SSW of Toppenish, Washington

A magnitude 2.1 earthquake struck 12 km SSW of Toppenish, Washington on Tue, Aug 27, 1985, 7:48 PM PDT (02:48 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M2.2 13 km WNW of Mattawa, Washington. This one was a foreshock.

Toppenish 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
2.1 (md), micro
Local time
UTC
1985-08-28 02:48:09 UTC
Depth
-0.7 km (-0.4 mi), shallow
Epicenter
46.269° N, 120.360° 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 0.3 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.14
Depth from
Operator assigned
Station coverage gap
103°
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 7 in the 30 days before it.

After

  1. 2.213 km WNW of Mattawa, Washington · 14992 days ago · 0 km deep · 64 km away
  2. 1.913 km WNW of Mattawa, Washington · 14972 days ago · 3 km deep · 64 km away
  3. 1.712 km WNW of Mattawa, Washington · 14972 days ago · 0 km deep · 64 km away
  4. 3.012 km WNW of Mattawa, Washington · 14966 days ago · 1 km deep · 63 km away
  5. 3.012 km WNW of Mattawa, Washington · 14966 days ago · 1 km deep · 63 km away
  6. 2.512 km WNW of Mattawa, Washington · 14966 days ago · 1 km deep · 63 km away
  7. 2.728 km NE of Trout Lake, Washington · 14964 days ago · 1 km deep · 72 km away
  8. 2.528 km NE of Trout Lake, Washington · 14964 days ago · -1 km deep · 71 km away
  9. 1.68 km NNE of Selah, Washington · 14959 days ago · 19 km deep · 52 km away
  10. 1.622 km NNE of Terrace Heights, Washington · 14952 days ago · 0 km deep · 57 km away
  11. 2.123 km NNE of Terrace Heights, Washington · 14952 days ago · 2 km deep · 58 km away
  12. 1.711 km S of Toppenish, Washington · 14951 days ago · -1 km deep · 3 km away
  13. 1.822 km NNE of Terrace Heights, Washington · 14946 days ago · 2 km deep · 58 km away
  14. 1.914 km SSW of Vantage, Washington · 14945 days ago · 0 km deep · 66 km away
  15. 1.912 km NW of Mattawa, Washington · 14945 days ago · 4 km deep · 64 km away
  16. 2.42 km SW of Dallesport, Washington · 14942 days ago · -1 km deep · 98 km away

Before

  1. 1.715 km ENE of Packwood, Washington · 15003 days ago · 5 km deep · 98 km away
  2. 1.914 km NW of Mattawa, Washington · 15003 days ago · 0 km deep · 64 km away
  3. 1.811 km SW of Ellensburg, Washington · 15006 days ago · 9 km deep · 76 km away
  4. 2.19 km WSW of Royal City, Washington · 15008 days ago · 0 km deep · 82 km away
  5. 1.76 km NW of Tieton, Washington · 15025 days ago · 5 km deep · 64 km away
  6. 2.611 km WSW of Ione, Oregon · 15025 days ago · -1 km deep · 97 km away
  7. 1.711 km SSW of Toppenish, Washington · 15027 days ago · -1 km deep · 1 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10196478. Read Tue, Sep 22, 2026, 7:23 AM UTC.