Washington earthquakes

M1.9 earthquake 37 km WSW of Winthrop, Washington

A magnitude 1.9 earthquake struck 37 km WSW of Winthrop, Washington on Thu, Aug 25, 1983, 7:03 PM PDT (02:03 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.6 6 km NW of Entiat, Washington. This one was a foreshock.

Twisp 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
1.9 (md), micro
Local time
UTC
1983-08-26 02:03:59 UTC
Depth
5.1 km (3.2 mi), shallow
Epicenter
48.324° N, 120.634° 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 9.6 km horizontally, 97.3 km in depth
Magnitude uncertainty
±0.20
Depth from
Operator assigned
Station coverage gap
138°
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 17 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 1.73 km ENE of Granite Falls, Washington · 15739 days ago · -1 km deep · 99 km away
  2. 1.960 km S of Princeton, Canada · 15733 days ago · 16 km deep · 67 km away
  3. 1.94 km SW of Chelan Falls, Washington · 15733 days ago · 3 km deep · 77 km away
  4. 2.411 km NW of Entiat, Washington · 15722 days ago · 3 km deep · 69 km away
  5. 2.56 km NW of Entiat, Washington · 15722 days ago · 4 km deep · 73 km away
  6. 2.66 km NW of Entiat, Washington · 15722 days ago · 4 km deep · 73 km away
  7. 1.55 km WSW of Waterville, Washington · 15716 days ago · 0 km deep · 85 km away
  8. 2.15 km SSE of Entiat, Washington · 15711 days ago · 5 km deep · 84 km away
  9. 1.68 km N of Entiat, Washington · 15706 days ago · 5 km deep · 71 km away
  10. 1.85 km E of Granite Falls, Washington · 15701 days ago · -1 km deep · 97 km away
  11. 1.54 km N of Entiat, Washington · 15698 days ago · 0 km deep · 74 km away
  12. 1.56 km W of Rockport, Washington · 15697 days ago · 1 km deep · 79 km away
  13. 1.89 km ESE of Verlot, Washington · 15691 days ago · 3 km deep · 83 km away
  14. 1.712 km NNW of Concrete, Washington · 15691 days ago · -1 km deep · 95 km away
  15. 1.69 km NNE of Waterville, Washington · 15691 days ago · 4 km deep · 82 km away
  16. 1.52 km W of Entiat, Washington · 15690 days ago · 0 km deep · 78 km away
  17. 1.64 km W of Entiat, Washington · 15686 days ago · 5 km deep · 77 km away

Before

  1. 1.640 km WSW of Twisp, Washington · 15741 days ago · 6 km deep · 6 km away
  2. 1.812 km SW of Methow, Washington · 15747 days ago · 19 km deep · 46 km away
  3. 1.64 km S of Entiat, Washington · 15760 days ago · 0 km deep · 83 km away
  4. 1.511 km WSW of Cashmere, Washington · 15765 days ago · 0 km deep · 92 km away
  5. 1.55 km SSE of Swede Heaven, Washington · 15765 days ago · 9 km deep · 79 km away
  6. 1.77 km NNE of Entiat, Washington · 15767 days ago · 0 km deep · 74 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10162343. Read Wed, Sep 30, 2026, 12:07 AM UTC.