Washington earthquakes

M1.6 earthquake 4 km S of Entiat, Washington

A magnitude 1.6 earthquake struck 4 km S of Entiat, Washington on Sat, Aug 6, 1983, 10:16 AM PDT (17:16 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.6 6 km NW of Entiat, 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, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1983-08-06 17:16:04 UTC
Depth
-0.2 km (-0.1 mi), shallow
Epicenter
47.635° N, 120.219° 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 1.1 km horizontally
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
68°
Stations used
14

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.812 km SW of Methow, Washington · 15748 days ago · 19 km deep · 49 km away
  2. 1.640 km WSW of Twisp, Washington · 15742 days ago · 6 km deep · 78 km away
  3. 1.937 km WSW of Winthrop, Washington · 15742 days ago · 5 km deep · 83 km away
  4. 1.94 km SW of Chelan Falls, Washington · 15734 days ago · 3 km deep · 21 km away
  5. 2.411 km NW of Entiat, Washington · 15723 days ago · 3 km deep · 14 km away
  6. 2.56 km NW of Entiat, Washington · 15723 days ago · 4 km deep · 10 km away
  7. 2.66 km NW of Entiat, Washington · 15723 days ago · 4 km deep · 10 km away
  8. 1.55 km WSW of Waterville, Washington · 15717 days ago · 0 km deep · 6 km away
  9. 2.15 km SSE of Entiat, Washington · 15712 days ago · 5 km deep · 3 km away
  10. 1.54 km SSW of West Wenatchee, Washington · 15708 days ago · 8 km deep · 28 km away
  11. 2.013 km N of Quincy, Washington · 15708 days ago · 0 km deep · 40 km away
  12. 1.68 km N of Entiat, Washington · 15708 days ago · 5 km deep · 13 km away

Before

  1. 1.511 km WSW of Cashmere, Washington · 15766 days ago · 0 km deep · 33 km away
  2. 1.77 km NNE of Entiat, Washington · 15768 days ago · 0 km deep · 12 km away
  3. 1.913 km NE of Mattawa, Washington · 15772 days ago · 1 km deep · 94 km away
  4. 1.59 km WNW of Entiat, Washington · 15774 days ago · 3 km deep · 12 km away
  5. 2.56 km NNW of Waterville, Washington · 15775 days ago · 0 km deep · 11 km away
  6. 2.09 km SW of Royal City, Washington · 15776 days ago · 0 km deep · 97 km away
  7. 1.514 km W of Entiat, Washington · 15776 days ago · 3 km deep · 13 km away
  8. 2.22 km NNE of Entiat, Washington · 15790 days ago · 5 km deep · 8 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10158003. Read Thu, Oct 1, 2026, 3:51 AM UTC.