Washington earthquakes

M1.5 earthquake 27 km NNW of Amboy, Washington

A magnitude 1.5 earthquake struck 27 km NNW of Amboy, Washington on Sun, Sep 21, 2008, 5:41 PM PDT (00:41 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M2.6 17 km SSE of Carbonado, 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
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2008-09-22 00:41:31 UTC
Depth
18.6 km (11.6 mi), shallow
Epicenter
46.153° N, 122.528° 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, 0.4 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
107°
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: 11 in the 60 days after this one and 16 in the 30 days before it.

After

  1. 2.617 km SSE of Carbonado, Washington · 6580 days ago · 6 km deep · 100 km away
  2. 1.721 km W of Forest Grove, Oregon · 6579 days ago · -1 km deep · 94 km away
  3. 1.85 km WSW of Kalama, Washington · 6577 days ago · 18 km deep · 35 km away
  4. 1.711 km N of Pe Ell, Washington · 6576 days ago · 29 km deep · 83 km away
  5. 1.630 km S of Morton, Washington · 6559 days ago · 4 km deep · 29 km away
  6. 1.625 km E of Castle Rock, Washington · 6539 days ago · 11 km deep · 15 km away
  7. 2.214 km SSE of Carbonado, Washington · 6538 days ago · 11 km deep · 98 km away
  8. 1.737 km NNE of Amboy, Washington · 6533 days ago · 1 km deep · 26 km away
  9. 1.52 km ESE of Portland, Oregon · 6533 days ago · 10 km deep · 71 km away
  10. 1.59 km NW of North Portland, Oregon · 6531 days ago · 21 km deep · 59 km away
  11. 2.41 km WNW of Amboy, Washington · 6529 days ago · 16 km deep · 27 km away

Before

  1. 1.523 km ENE of Ashford, Washington · 6589 days ago · -3 km deep · 98 km away
  2. 2.06 km NW of North Portland, Oregon · 6595 days ago · 17 km deep · 60 km away
  3. 2.137 km NNE of Amboy, Washington · 6597 days ago · -1 km deep · 27 km away
  4. 1.523 km SSE of Mossyrock, Washington · 6599 days ago · 14 km deep · 23 km away
  5. 2.423 km SSE of Mossyrock, Washington · 6600 days ago · 15 km deep · 22 km away
  6. 1.623 km SSE of Mossyrock, Washington · 6600 days ago · 16 km deep · 22 km away
  7. 2.923 km SSE of Mossyrock, Washington · 6600 days ago · 15 km deep · 23 km away
  8. 2.523 km SSE of Mossyrock, Washington · 6600 days ago · 14 km deep · 23 km away
  9. 1.58 km S of Morton, Washington · 6601 days ago · 15 km deep · 42 km away
  10. 1.837 km NNE of Amboy, Washington · 6604 days ago · 1 km deep · 26 km away
  11. 1.67 km N of Bethany, Oregon · 6607 days ago · 5 km deep · 64 km away
  12. 1.57 km WSW of Morton, Washington · 6612 days ago · 19 km deep · 43 km away
  13. 2.430 km N of Amboy, Washington · 6612 days ago · -1 km deep · 8 km away
  14. 2.612 km N of Ashford, Washington · 6616 days ago · 6 km deep · 88 km away
  15. 1.911 km NE of Ashford, Washington · 6616 days ago · 7 km deep · 89 km away
  16. 1.837 km NNE of Amboy, Washington · 6617 days ago · -1 km deep · 27 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10753143. Read Mon, Oct 5, 2026, 4:41 AM UTC.