Washington earthquakes

M1.5 earthquake 5 km SE of Mineral, Washington

A magnitude 1.5 earthquake struck 5 km SE of Mineral, Washington on Sun, Aug 7, 1977, 6:29 AM PDT (13:29 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M1.7 13 km SSW of South Cle Elum, Washington. This one was a foreshock.

Morton 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), micro
Local time
UTC
1977-08-07 13:29:00 UTC
Depth
19.1 km (11.9 mi), shallow
Epicenter
46.688° N, 122.129° 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 1.0 km horizontally, 1.0 km in depth
Depth from
From location
Station coverage gap
202°, poorly surrounded by stations
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: 21 in the 60 days after this one and 18 in the 30 days before it.

After

  1. 1.52 km NNE of Bonney Lake, Washington · 17940 days ago · 12 km deep · 57 km away
  2. 1.713 km SSW of South Cle Elum, Washington · 17928 days ago · 9 km deep · 95 km away
  3. 1.917 km SE of Carbonado, Washington · 17925 days ago · 9 km deep · 35 km away
  4. 1.515 km NNE of Ashford, Washington · 17925 days ago · 15 km deep · 26 km away
  5. 1.939 km SE of Morton, Washington · 17923 days ago · -1 km deep · 46 km away
  6. 1.52 km NW of Snoqualmie, Washington · 17923 days ago · 25 km deep · 98 km away
  7. 1.912 km NE of East Cathlamet, Washington · 17922 days ago · 23 km deep · 97 km away
  8. 1.811 km W of Packwood, Washington · 17922 days ago · -1 km deep · 24 km away
  9. 1.613 km SSW of South Cle Elum, Washington · 17915 days ago · 1 km deep · 96 km away
  10. 1.613 km NNE of Cliffdell, Washington · 17915 days ago · 7 km deep · 95 km away
  11. 1.74 km NW of Federal Way, Washington · 17914 days ago · 22 km deep · 76 km away
  12. 3.46 km SSE of Bucoda, Washington · 17912 days ago · 6 km deep · 54 km away
  13. 2.115 km NNE of Ashford, Washington · 17910 days ago · -1 km deep · 26 km away
  14. 2.06 km N of Mossyrock, Washington · 17902 days ago · 23 km deep · 29 km away
  15. 2.18 km NNE of Mossyrock, Washington · 17901 days ago · 20 km deep · 26 km away
  16. 1.74 km NE of North Bend, Washington · 17898 days ago · -1 km deep · 97 km away
  17. 1.63 km NE of Bonney Lake, Washington · 17897 days ago · 15 km deep · 57 km away
  18. 1.915 km NNE of Ashford, Washington · 17894 days ago · 4 km deep · 26 km away
  19. 1.914 km E of Wilkeson, Washington · 17890 days ago · 7 km deep · 50 km away
  20. 2.122 km N of Carson, Washington · 17888 days ago · -1 km deep · 88 km away
  21. 1.511 km SSE of Pe Ell, Washington · 17885 days ago · 28 km deep · 90 km away

Before

  1. 1.933 km NE of Amboy, Washington · 17945 days ago · 1 km deep · 60 km away
  2. 1.65 km S of Gorst, Washington · 17948 days ago · 22 km deep · 98 km away
  3. 1.916 km WNW of Packwood, Washington · 17950 days ago · 0 km deep · 20 km away
  4. 2.013 km ENE of Ashford, Washington · 17951 days ago · 2 km deep · 24 km away
  5. 1.80 km WNW of Normandy Park, Washington · 17957 days ago · 16 km deep · 85 km away
  6. 2.011 km W of Tieton, Washington · 17958 days ago · 12 km deep · 94 km away
  7. 2.02 km W of Artondale, Washington · 17959 days ago · 20 km deep · 79 km away
  8. 1.73 km WSW of Rosedale, Washington · 17961 days ago · 19 km deep · 82 km away
  9. 1.53 km ESE of Fall City, Washington · 17961 days ago · 19 km deep · 99 km away
  10. 1.92 km ESE of Belfair, Washington · 17963 days ago · -1 km deep · 98 km away
  11. 2.34 km SW of Orting, Washington · 17963 days ago · 0 km deep · 43 km away
  12. 1.513 km NW of Cliffdell, Washington · 17964 days ago · 18 km deep · 81 km away
  13. 2.717 km S of Mossyrock, Washington · 17968 days ago · 14 km deep · 44 km away
  14. 1.711 km SE of Carbonado, Washington · 17968 days ago · 5 km deep · 37 km away
  15. 2.413 km SSW of South Cle Elum, Washington · 17968 days ago · 5 km deep · 96 km away
  16. 2.213 km SSW of South Cle Elum, Washington · 17968 days ago · 4 km deep · 95 km away
  17. 2.012 km S of South Cle Elum, Washington · 17969 days ago · -1 km deep · 98 km away
  18. 3.910 km SSW of South Cle Elum, Washington · 17969 days ago · 2 km deep · 98 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10844348. Read Tue, Sep 22, 2026, 9:21 PM UTC.