Washington earthquakes

M1.6 earthquake 38 km NNE of Amboy, Washington

A magnitude 1.6 earthquake struck 38 km NNE of Amboy, Washington on Fri, Oct 23, 1981, 10:55 AM PDT (17:55 UTC), 1 km (1 mi) below the surface.

A larger quake followed: M2.2 1 km NE of White Salmon, 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
1.6 (md), micro
Local time
UTC
1981-10-23 17:55:06 UTC
Depth
1.5 km (0.9 mi), shallow
Epicenter
46.208° N, 122.205° 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 0.7 km horizontally, 0.6 km in depth
Magnitude uncertainty
±0.17
Depth from
From location
Station coverage gap
56°
Stations used
13

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.21 km NE of White Salmon, Washington · 16399 days ago · 3 km deep · 77 km away
  2. 2.55 km SSE of Mill Plain, Washington · 16389 days ago · 6 km deep · 71 km away
  3. 1.720 km S of Morton, Washington · 16389 days ago · 8 km deep · 19 km away
  4. 1.78 km SE of Mineral, Washington · 16382 days ago · 18 km deep · 50 km away
  5. 1.923 km ESE of Packwood, Washington · 16378 days ago · 4 km deep · 72 km away
  6. 1.53 km NE of East Cathlamet, Washington · 16374 days ago · 21 km deep · 87 km away
  7. 1.525 km ENE of Ashford, Washington · 16371 days ago · -1 km deep · 81 km away
  8. 2.722 km S of Morton, Washington · 16366 days ago · 5 km deep · 16 km away
  9. 1.623 km S of Morton, Washington · 16350 days ago · 10 km deep · 16 km away
  10. 2.024 km ESE of Packwood, Washington · 16349 days ago · 5 km deep · 72 km away
  11. 2.732 km S of Morton, Washington · 16349 days ago · 1 km deep · 7 km away
  12. 1.75 km SW of Chenoweth, Oregon · 16348 days ago · -1 km deep · 99 km away

Before

  1. 1.625 km ESE of Packwood, Washington · 16409 days ago · 0 km deep · 76 km away
  2. 1.95 km SSE of Mineral, Washington · 16414 days ago · 19 km deep · 51 km away
  3. 2.624 km ESE of Packwood, Washington · 16421 days ago · 3 km deep · 73 km away
  4. 1.823 km S of Morton, Washington · 16429 days ago · 8 km deep · 15 km away
  5. 1.517 km NW of Trout Lake, Washington · 16430 days ago · 3 km deep · 43 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10123508. Read Tue, Sep 22, 2026, 10:44 AM UTC.