Washington earthquakes

M1.6 earthquake 10 km NW of Entiat, Washington

A magnitude 1.6 earthquake struck 10 km NW of Entiat, Washington on Sun, Oct 2, 1988, 12:11 AM PDT (07:11 UTC), -1 km (0 mi) below the surface.

A larger quake followed: M2.8 8 km NNW of Chelan, 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
1988-10-02 07:11:19 UTC
Depth
-0.7 km (-0.5 mi), shallow
Epicenter
47.736° N, 120.309° 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, 2.2 km in depth
Magnitude uncertainty
±0.09
Depth from
From location
Station coverage gap
204°, poorly surrounded by stations
Stations used
9

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 2 in the 30 days before it.

After

  1. 1.78 km WSW of Chelan Falls, Washington · 13880 days ago · 6 km deep · 17 km away
  2. 1.63 km S of Entiat, Washington · 13873 days ago · 4 km deep · 13 km away
  3. 2.112 km W of Easton, Washington · 13868 days ago · 2 km deep · 95 km away
  4. 1.611 km ESE of Okanogan, Washington · 13849 days ago · 0 km deep · 90 km away
  5. 1.543 km WNW of Granite Falls, Washington · 13843 days ago · 0 km deep · 45 km away
  6. 1.65 km NW of Okanogan, Washington · 13840 days ago · 6 km deep · 88 km away
  7. 1.714 km NE of Winthrop, Washington · 13835 days ago · -1 km deep · 95 km away
  8. 2.88 km NNW of Chelan, Washington · 13834 days ago · 0 km deep · 28 km away
  9. 1.78 km NNW of Chelan, Washington · 13834 days ago · 0 km deep · 27 km away
  10. 1.68 km NNW of Chelan, Washington · 13829 days ago · -1 km deep · 28 km away
  11. 1.58 km NNW of Chelan, Washington · 13829 days ago · -1 km deep · 28 km away
  12. 1.911 km ESE of Okanogan, Washington · 13823 days ago · -1 km deep · 91 km away

Before

  1. 1.79 km SW of Chelan Falls, Washington · 13896 days ago · 6 km deep · 17 km away
  2. 2.16 km ENE of Entiat, Washington · 13902 days ago · 5 km deep · 14 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10232123. Read Mon, Oct 5, 2026, 2:41 PM UTC.