Washington earthquakes

M1.5 earthquake 10 km WSW of Entiat, Washington

A magnitude 1.5 earthquake struck 10 km WSW of Entiat, Washington on Mon, May 16, 1977, 9:14 PM PDT (04:14 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M3.9 10 km SSW of South Cle Elum, 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
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1977-05-17 04:14:08 UTC
Depth
-0.0 km (-0.0 mi), shallow
Epicenter
47.657° N, 120.342° 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 0.5 km horizontally
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
96°
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 1.78 km SSW of Chelan Falls, Washington · 18031 days ago · 3 km deep · 25 km away
  2. 1.712 km W of Entiat, Washington · 18028 days ago · 0 km deep · 3 km away
  3. 2.420 km NNE of Index, Washington · 18017 days ago · 4 km deep · 92 km away
  4. 1.70 km SSW of Entiat, Washington · 18012 days ago · 0 km deep · 10 km away
  5. 2.37 km N of Quincy, Washington · 18005 days ago · 0 km deep · 54 km away
  6. 2.35 km NNE of Waterville, Washington · 18001 days ago · 0 km deep · 23 km away
  7. 3.910 km SSW of South Cle Elum, Washington · 17981 days ago · 2 km deep · 79 km away
  8. 2.012 km S of South Cle Elum, Washington · 17981 days ago · -1 km deep · 80 km away
  9. 2.213 km SSW of South Cle Elum, Washington · 17980 days ago · 4 km deep · 83 km away
  10. 2.413 km SSW of South Cle Elum, Washington · 17980 days ago · 5 km deep · 82 km away

Before

  1. 2.112 km SSW of Kittitas, Washington · 18041 days ago · 13 km deep · 86 km away
  2. 1.64 km NW of Waterville, Washington · 18042 days ago · 0 km deep · 16 km away
  3. 2.0Washington · 18045 days ago · 0 km deep · 12 km away
  4. 2.10 km SW of Waterville, Washington · 18047 days ago · 0 km deep · 20 km away
  5. 1.55 km SSW of Chelan Falls, Washington · 18048 days ago · 4 km deep · 27 km away
  6. 1.77 km SE of Rock Island, Washington · 18055 days ago · 0 km deep · 42 km away
  7. 1.85 km W of Entiat, Washington · 18062 days ago · 0 km deep · 5 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10843678. Read Sun, Oct 4, 2026, 8:56 PM UTC.