Washington earthquakes

M1.6 earthquake 8 km N of Entiat, Washington

A magnitude 1.6 earthquake struck 8 km N of Entiat, Washington on Thu, Sep 29, 1983, 7:02 AM PDT (14:02 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.3 14 km E of Mansfield, 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
1.6 (md), micro
Local time
UTC
1983-09-29 14:02:40 UTC
Depth
4.9 km (3.0 mi), shallow
Epicenter
47.753° N, 120.207° 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, 1.0 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
149°
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.54 km N of Entiat, Washington · 15698 days ago · 0 km deep · 4 km away
  2. 2.023 km E of Mansfield, Washington · 15697 days ago · 3 km deep · 66 km away
  3. 1.69 km NNE of Waterville, Washington · 15691 days ago · 4 km deep · 15 km away
  4. 1.52 km W of Entiat, Washington · 15690 days ago · 0 km deep · 9 km away
  5. 2.13 km E of Cle Elum, Washington · 15688 days ago · -1 km deep · 80 km away
  6. 1.64 km W of Entiat, Washington · 15686 days ago · 5 km deep · 9 km away
  7. 1.65 km NNE of Entiat, Washington · 15680 days ago · 0 km deep · 5 km away
  8. 2.28 km S of Leavenworth, Washington · 15678 days ago · 1 km deep · 42 km away
  9. 1.86 km N of Waterville, Washington · 15673 days ago · 0 km deep · 12 km away
  10. 1.77 km NNE of Waterville, Washington · 15672 days ago · 0 km deep · 15 km away
  11. 1.89 km WNW of Entiat, Washington · 15669 days ago · 2 km deep · 12 km away
  12. 1.711 km NW of Okanogan, Washington · 15667 days ago · 23 km deep · 86 km away
  13. 1.54 km N of Entiat, Washington · 15667 days ago · 0 km deep · 5 km away
  14. 2.00 km NE of Roslyn, Washington · 15663 days ago · 3 km deep · 83 km away
  15. 2.314 km E of Mansfield, Washington · 15650 days ago · -1 km deep · 57 km away

Before

  1. 2.013 km N of Quincy, Washington · 15707 days ago · 0 km deep · 50 km away
  2. 1.54 km SSW of West Wenatchee, Washington · 15707 days ago · 8 km deep · 41 km away
  3. 2.15 km SSE of Entiat, Washington · 15711 days ago · 5 km deep · 14 km away
  4. 1.55 km WSW of Waterville, Washington · 15716 days ago · 0 km deep · 14 km away
  5. 2.66 km NW of Entiat, Washington · 15722 days ago · 4 km deep · 7 km away
  6. 2.56 km NW of Entiat, Washington · 15722 days ago · 4 km deep · 6 km away
  7. 2.411 km NW of Entiat, Washington · 15722 days ago · 3 km deep · 9 km away
  8. 1.94 km SW of Chelan Falls, Washington · 15733 days ago · 3 km deep · 14 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10165768. Read Wed, Sep 30, 2026, 3:56 AM UTC.