Washington earthquakes

M1.8 earthquake 34 km NNE of Amboy, Washington

A magnitude 1.8 earthquake struck 34 km NNE of Amboy, Washington on Tue, Oct 21, 1980, 6:30 AM PDT (13:30 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.1 25 km S of Morton, Washington. This one was a foreshock.

Amboy 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
1.8 (md), micro
Local time
UTC
1980-10-21 13:30:25 UTC
Depth
1.3 km (0.8 mi), shallow
Epicenter
46.174° N, 122.206° 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 1.7 km horizontally, 1.7 km in depth
Magnitude uncertainty
±0.24
Depth from
From location
Station coverage gap
84°
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: 9 in the 60 days after this one and 16 in the 30 days before it.

After

  1. 1.823 km SW of Packwood, Washington · 16772 days ago · 0 km deep · 40 km away
  2. 1.812 km W of Packwood, Washington · 16769 days ago · 5 km deep · 54 km away
  3. 2.125 km S of Morton, Washington · 16759 days ago · 1 km deep · 18 km away
  4. 2.112 km SE of Mossyrock, Washington · 16746 days ago · 9 km deep · 32 km away
  5. 2.119 km NE of Ashford, Washington · 16741 days ago · 9 km deep · 85 km away
  6. 1.69 km WNW of Deer Island, Oregon · 16736 days ago · 23 km deep · 63 km away
  7. 1.619 km NNE of Ashford, Washington · 16735 days ago · 7 km deep · 85 km away
  8. 1.623 km S of Morton, Washington · 16731 days ago · -1 km deep · 19 km away
  9. 1.537 km NNE of Amboy, Washington · 16714 days ago · 1 km deep · 3 km away

Before

  1. 1.813 km W of Packwood, Washington · 16773 days ago · 6 km deep · 54 km away
  2. 3.013 km W of Packwood, Washington · 16775 days ago · 5 km deep · 53 km away
  3. 1.738 km SSE of Morton, Washington · 16775 days ago · -1 km deep · 6 km away
  4. 1.736 km S of Morton, Washington · 16775 days ago · 2 km deep · 7 km away
  5. 2.839 km NNE of Amboy, Washington · 16777 days ago · 0 km deep · 5 km away
  6. 2.036 km NNE of Amboy, Washington · 16777 days ago · 2 km deep · 2 km away
  7. 1.838 km NNE of Amboy, Washington · 16777 days ago · 0 km deep · 4 km away
  8. 2.338 km NNE of Amboy, Washington · 16777 days ago · 0 km deep · 4 km away
  9. 2.437 km NNE of Amboy, Washington · 16777 days ago · 0 km deep · 3 km away
  10. 1.740 km SSE of Morton, Washington · 16779 days ago · -1 km deep · 6 km away
  11. 1.93 km SE of Kelso, Washington · 16779 days ago · 7 km deep · 51 km away
  12. 1.937 km NNE of Amboy, Washington · 16784 days ago · -1 km deep · 3 km away
  13. 1.738 km NNE of Amboy, Washington · 16785 days ago · 0 km deep · 4 km away
  14. 1.737 km NNE of Amboy, Washington · 16785 days ago · 0 km deep · 3 km away
  15. 1.837 km NNE of Amboy, Washington · 16789 days ago · 0 km deep · 3 km away
  16. 1.9Washington · 16795 days ago · 0 km deep · 3 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10093338. Read Tue, Sep 22, 2026, 8:36 PM UTC.