Washington earthquakes

M1.5 earthquake 15 km NNE of Greenwater, Washington

A magnitude 1.5 earthquake struck 15 km NNE of Greenwater, Washington on Thu, Aug 21, 1980, 3:54 PM PDT (22:54 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M3.8 3 km NNW of North Sultan, Washington. This one was a foreshock.

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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
1980-08-21 22:54:48 UTC
Depth
7.0 km (4.4 mi), shallow
Epicenter
47.288° N, 121.583° 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 1.3 km horizontally, 2.0 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
120°
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: 16 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 2.334 km WSW of Tampico, Washington · 16840 days ago · 6 km deep · 100 km away
  2. 1.54 km W of Wauna, Washington · 16840 days ago · 21 km deep · 84 km away
  3. 2.17 km NNE of Morton, Washington · 16839 days ago · 0 km deep · 89 km away
  4. 1.63 km W of Shoreline, Washington · 16837 days ago · 19 km deep · 80 km away
  5. 1.710 km SW of Mineral, Washington · 16837 days ago · 15 km deep · 88 km away
  6. 2.012 km E of Wilkeson, Washington · 16835 days ago · 16 km deep · 30 km away
  7. 1.84 km WSW of Shoreline, Washington · 16830 days ago · 20 km deep · 78 km away
  8. 2.26 km S of Wilderness Rim, Washington · 16812 days ago · 17 km deep · 18 km away
  9. 3.83 km NNW of North Sultan, Washington · 16811 days ago · 4 km deep · 71 km away
  10. 3.53 km NNW of North Sultan, Washington · 16809 days ago · 3 km deep · 71 km away
  11. 1.74 km NW of North Sultan, Washington · 16809 days ago · 1 km deep · 72 km away
  12. 2.82 km E of Cottage Lake, Washington · 16800 days ago · 8 km deep · 61 km away
  13. 1.84 km NE of Maplewood, Washington · 16794 days ago · 45 km deep · 72 km away
  14. 1.70 km N of Federal Way, Washington · 16786 days ago · 8 km deep · 55 km away
  15. 1.718 km SW of Cashmere, Washington · 16785 days ago · 0 km deep · 73 km away
  16. 3.013 km W of Packwood, Washington · 16782 days ago · 5 km deep · 80 km away

Before

  1. 2.42 km SE of City of Sammamish, Washington · 16842 days ago · 9 km deep · 47 km away
  2. 1.725 km ENE of Ashford, Washington · 16850 days ago · 8 km deep · 49 km away
  3. 1.624 km ENE of Ashford, Washington · 16853 days ago · 4 km deep · 49 km away
  4. 1.71 km ENE of Browns Point, Washington · 16854 days ago · 13 km deep · 64 km away
  5. 1.94 km E of Granite Falls, Washington · 16865 days ago · -1 km deep · 93 km away
  6. 1.525 km ENE of Ashford, Washington · 16866 days ago · 2 km deep · 49 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10085758. Read Wed, Sep 30, 2026, 3:33 AM UTC.