Washington earthquakes

M2.1 earthquake 23 km ENE of Ashford, Washington

A magnitude 2.1 earthquake struck 23 km ENE of Ashford, Washington on Thu, Sep 3, 1987, 11:14 PM PDT (06:14 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.8 22 km S of Morton, 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
2.1 (md), micro
Local time
UTC
1987-09-04 06:14:51 UTC
Depth
0.8 km (0.5 mi), shallow
Epicenter
46.859° N, 121.760° 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 0.4 km horizontally, 1.2 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
43°
Stations used
36

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 7 in the 30 days before it.

After

  1. 1.85 km NE of Ravensdale, Washington · 14260 days ago · 2 km deep · 59 km away
  2. 1.822 km S of Morton, Washington · 14256 days ago · 12 km deep · 68 km away
  3. 1.722 km S of Morton, Washington · 14256 days ago · 11 km deep · 67 km away
  4. 2.822 km S of Morton, Washington · 14256 days ago · 11 km deep · 68 km away
  5. 1.622 km S of Morton, Washington · 14255 days ago · 12 km deep · 68 km away
  6. 2.616 km WSW of Alder, Washington · 14253 days ago · 18 km deep · 57 km away
  7. 1.61 km SW of Lake Marcel-Stillwater, Washington · 14244 days ago · 22 km deep · 92 km away
  8. 1.513 km NE of Cliffdell, Washington · 14244 days ago · -1 km deep · 65 km away
  9. 1.930 km E of Packwood, Washington · 14243 days ago · -1 km deep · 47 km away
  10. 1.715 km E of Castle Rock, Washington · 14239 days ago · 6 km deep · 96 km away
  11. 1.62 km W of Black Diamond, Washington · 14233 days ago · 13 km deep · 54 km away
  12. 2.16 km SSE of Wilderness Rim, Washington · 14232 days ago · 1 km deep · 59 km away
  13. 1.52 km ESE of Ames Lake, Washington · 14231 days ago · 22 km deep · 86 km away
  14. 1.96 km SSE of Wilderness Rim, Washington · 14230 days ago · 1 km deep · 59 km away
  15. 1.68 km NNE of Snoqualmie, Washington · 14223 days ago · 10 km deep · 82 km away
  16. 2.021 km SSE of Mossyrock, Washington · 14222 days ago · 7 km deep · 75 km away
  17. 1.60 km SE of Lakeland South, Washington · 14222 days ago · 16 km deep · 61 km away
  18. 2.025 km ENE of Ashford, Washington · 14219 days ago · -1 km deep · 2 km away
  19. 1.81 km ENE of Vashon, Washington · 14212 days ago · 22 km deep · 84 km away
  20. 1.66 km E of Belfair, Washington · 14208 days ago · 19 km deep · 99 km away
  21. 1.87 km WSW of Wilderness Rim, Washington · 14204 days ago · 16 km deep · 62 km away

Before

  1. 1.614 km NNW of Tampico, Washington · 14269 days ago · 5 km deep · 65 km away
  2. 1.81 km NNW of Tanner, Washington · 14275 days ago · 9 km deep · 70 km away
  3. 2.06 km NE of Thorp, Washington · 14277 days ago · 8 km deep · 91 km away
  4. 1.72 km N of Black Diamond, Washington · 14277 days ago · 18 km deep · 56 km away
  5. 1.57 km ESE of Ravensdale, Washington · 14278 days ago · -1 km deep · 52 km away
  6. 1.635 km NNE of Amboy, Washington · 14287 days ago · -2 km deep · 82 km away
  7. 1.61 km ESE of Lake Marcel-Stillwater, Washington · 14293 days ago · 0 km deep · 93 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10221803. Read Tue, Sep 22, 2026, 10:51 AM UTC.