Washington earthquakes

M1.5 earthquake 11 km E of Kelso, Washington

A magnitude 1.5 earthquake struck 11 km E of Kelso, Washington on Fri, Apr 4, 2008, 12:28 AM PDT (07:28 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M2.6 18 km ENE of Kalama, Washington. This one was a foreshock.

Kelso 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
2008-04-04 07:28:46 UTC
Depth
18.1 km (11.2 mi), shallow
Epicenter
46.164° N, 122.767° 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 0.9 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
100°
Stations used
17

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 16 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 1.74 km ESE of Mossyrock, Washington · 6747 days ago · 19 km deep · 47 km away
  2. 1.712 km SSE of Morton, Washington · 6740 days ago · 4 km deep · 53 km away
  3. 1.511 km NNE of Ashford, Washington · 6740 days ago · 6 km deep · 98 km away
  4. 1.70 km E of Salmon Creek, Washington · 6738 days ago · 19 km deep · 51 km away
  5. 2.618 km ENE of Kalama, Washington · 6736 days ago · 17 km deep · 16 km away
  6. 2.29 km E of Ashford, Washington · 6727 days ago · 1 km deep · 93 km away
  7. 1.69 km NE of Kalama, Washington · 6717 days ago · -1 km deep · 10 km away
  8. 1.94 km W of Deer Island, Oregon · 6717 days ago · 26 km deep · 27 km away
  9. 2.021 km NNE of Amboy, Washington · 6716 days ago · 0 km deep · 33 km away
  10. 2.19 km E of Kelso, Washington · 6713 days ago · 19 km deep · 1 km away
  11. 2.111 km NE of Ashford, Washington · 6708 days ago · 7 km deep · 98 km away
  12. 1.611 km NE of Ashford, Washington · 6707 days ago · 8 km deep · 98 km away
  13. 2.013 km WSW of Packwood, Washington · 6705 days ago · 1 km deep · 84 km away
  14. 1.53 km W of West Linn, Oregon · 6704 days ago · 22 km deep · 89 km away
  15. 1.837 km NNE of Amboy, Washington · 6699 days ago · 1 km deep · 44 km away
  16. 2.24 km ESE of Mossyrock, Washington · 6699 days ago · 19 km deep · 47 km away

Before

  1. 1.710 km E of Kelso, Washington · 6758 days ago · 19 km deep · 1 km away
  2. 1.74 km ESE of Mossyrock, Washington · 6759 days ago · 20 km deep · 47 km away
  3. 2.510 km NE of Ashford, Washington · 6760 days ago · 5 km deep · 98 km away
  4. 1.59 km ESE of Onalaska, Washington · 6772 days ago · 17 km deep · 43 km away
  5. 2.59 km W of Mossyrock, Washington · 6772 days ago · 19 km deep · 42 km away
  6. 1.79 km NE of North Plains, Oregon · 6781 days ago · 18 km deep · 58 km away
  7. 1.75 km ENE of Prescott, Oregon · 6782 days ago · 7 km deep · 11 km away
  8. 1.64 km ESE of Mossyrock, Washington · 6782 days ago · 18 km deep · 47 km away
  9. 1.737 km NNE of Amboy, Washington · 6787 days ago · 1 km deep · 45 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10739948. Read Sun, Oct 4, 2026, 6:52 PM UTC.