Washington earthquakes

M1.8 earthquake 1 km WSW of Entiat, Washington

A magnitude 1.8 earthquake struck 1 km WSW of Entiat, Washington on Mon, Jul 4, 1983, 2:37 PM PDT (21:37 UTC), 4 km (2 mi) below the surface.

A larger quake followed: M2.2 2 km NNE 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
1.8 (md), micro
Local time
UTC
1983-07-04 21:37:13 UTC
Depth
3.8 km (2.3 mi), shallow
Epicenter
47.673° N, 120.230° 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 2.9 km horizontally, 5.8 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
195°, poorly surrounded by stations
Stations used
6

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 7 in the 30 days before it.

After

  1. 1.74 km NNE of Waterville, Washington · 15784 days ago · 6 km deep · 13 km away
  2. 2.22 km NNE of Entiat, Washington · 15781 days ago · 5 km deep · 4 km away
  3. 1.514 km W of Entiat, Washington · 15767 days ago · 3 km deep · 12 km away
  4. 2.56 km NNW of Waterville, Washington · 15766 days ago · 0 km deep · 10 km away
  5. 1.59 km WNW of Entiat, Washington · 15765 days ago · 3 km deep · 8 km away
  6. 1.913 km NE of Mattawa, Washington · 15763 days ago · 1 km deep · 99 km away
  7. 1.77 km NNE of Entiat, Washington · 15759 days ago · 0 km deep · 9 km away
  8. 1.511 km WSW of Cashmere, Washington · 15757 days ago · 0 km deep · 35 km away
  9. 1.64 km S of Entiat, Washington · 15753 days ago · 0 km deep · 4 km away
  10. 1.812 km SW of Methow, Washington · 15740 days ago · 19 km deep · 45 km away
  11. 1.640 km WSW of Twisp, Washington · 15733 days ago · 6 km deep · 74 km away
  12. 1.937 km WSW of Winthrop, Washington · 15733 days ago · 5 km deep · 78 km away

Before

  1. 2.18 km SSE of Leavenworth, Washington · 15786 days ago · 8 km deep · 33 km away
  2. 1.86 km NNW of Waterville, Washington · 15789 days ago · 3 km deep · 11 km away
  3. 1.512 km NE of Index, Washington · 15806 days ago · 1 km deep · 94 km away
  4. 2.76 km WSW of Entiat, Washington · 15810 days ago · 4 km deep · 5 km away
  5. 1.54 km E of Baring, Washington · 15810 days ago · 0 km deep · 90 km away
  6. 2.011 km SE of Snoqualmie Pass, Washington · 15811 days ago · 7 km deep · 90 km away
  7. 1.53 km SW of Baring, Washington · 15814 days ago · 12 km deep · 97 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10155988. Read Tue, Sep 22, 2026, 10:51 AM UTC.