Washington earthquakes

M1.8 earthquake 5 km WSW of Kalama, Washington

A magnitude 1.8 earthquake struck 5 km WSW of Kalama, Washington on Thu, Oct 2, 2008, 8:27 AM PDT (15:27 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M2.4 1 km WNW of Amboy, Washington. This one was a foreshock.

Kalama 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, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2008-10-02 15:27:53 UTC
Depth
17.9 km (11.1 mi), shallow
Epicenter
45.990° N, 122.915° 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 0.6 km horizontally, 0.9 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
129°
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: 8 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 1.711 km N of Pe Ell, Washington · 6577 days ago · 29 km deep · 82 km away
  2. 1.630 km S of Morton, Washington · 6560 days ago · 4 km deep · 64 km away
  3. 1.625 km E of Castle Rock, Washington · 6540 days ago · 11 km deep · 41 km away
  4. 1.737 km NNE of Amboy, Washington · 6534 days ago · 1 km deep · 60 km away
  5. 1.52 km ESE of Portland, Oregon · 6534 days ago · 10 km deep · 57 km away
  6. 1.59 km NW of North Portland, Oregon · 6532 days ago · 21 km deep · 38 km away
  7. 2.41 km WNW of Amboy, Washington · 6529 days ago · 16 km deep · 36 km away
  8. 1.514 km SE of Mossyrock, Washington · 6518 days ago · 18 km deep · 65 km away

Before

  1. 1.721 km W of Forest Grove, Oregon · 6580 days ago · -1 km deep · 61 km away
  2. 1.527 km NNW of Amboy, Washington · 6588 days ago · 19 km deep · 35 km away
  3. 2.06 km NW of North Portland, Oregon · 6595 days ago · 17 km deep · 40 km away
  4. 2.137 km NNE of Amboy, Washington · 6598 days ago · -1 km deep · 61 km away
  5. 1.523 km SSE of Mossyrock, Washington · 6600 days ago · 14 km deep · 55 km away
  6. 2.423 km SSE of Mossyrock, Washington · 6600 days ago · 15 km deep · 55 km away
  7. 1.623 km SSE of Mossyrock, Washington · 6600 days ago · 16 km deep · 55 km away
  8. 2.923 km SSE of Mossyrock, Washington · 6600 days ago · 15 km deep · 56 km away
  9. 2.523 km SSE of Mossyrock, Washington · 6600 days ago · 14 km deep · 56 km away
  10. 1.58 km S of Morton, Washington · 6601 days ago · 15 km deep · 74 km away
  11. 1.837 km NNE of Amboy, Washington · 6604 days ago · 1 km deep · 60 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10754803. Read Mon, Oct 5, 2026, 1:22 PM UTC.