Washington earthquakes

M1.5 earthquake 21 km N of Amanda Park, Washington

A magnitude 1.5 earthquake struck 21 km N of Amanda Park, Washington on Mon, Apr 9, 1990, 2:32 AM PDT (09:32 UTC), 27 km (17 mi) below the surface.

A larger quake followed: M2.5 4 km SSW of Gorst, 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, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1990-04-09 09:32:40 UTC
Depth
26.8 km (16.6 mi), shallow
Epicenter
47.653° N, 123.853° 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, 1.3 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
108°
Stations used
15

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 1 in the 30 days before it.

After

  1. 1.912 km ESE of Humptulips, Washington · 13315 days ago · 26 km deep · 50 km away
  2. 1.68 km W of Langford, Canada · 13314 days ago · 22 km deep · 90 km away
  3. 1.56 km W of Burley, Washington · 13311 days ago · 19 km deep · 90 km away
  4. 1.76 km SSW of Hansville, Washington · 13310 days ago · 18 km deep · 97 km away
  5. 2.54 km SSW of Gorst, Washington · 13310 days ago · 44 km deep · 87 km away
  6. 2.35 km E of Aberdeen Gardens, Washington · 13299 days ago · 10 km deep · 68 km away
  7. 1.76 km N of Six Mile, Canada · 13295 days ago · 27 km deep · 100 km away
  8. 2.04 km NE of Six Mile, Canada · 13285 days ago · 23 km deep · 98 km away
  9. 1.611 km NNE of Jamestown, Washington · 13285 days ago · 13 km deep · 88 km away
  10. 2.03 km SSW of Rosedale, Washington · 13283 days ago · 26 km deep · 97 km away
  11. 1.63 km ENE of Burley, Washington · 13278 days ago · 42 km deep · 98 km away
  12. 2.28 km W of Hoodsport, Washington · 13270 days ago · 44 km deep · 52 km away

Before

  1. 2.14 km WSW of Rosedale, Washington · 13332 days ago · 23 km deep · 94 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10256438. Read Thu, Oct 1, 2026, 10:33 PM UTC.