Washington earthquakes

M1.7 earthquake 10 km E of Kalama, Washington

A magnitude 1.7 earthquake struck 10 km E of Kalama, Washington on Tue, Aug 5, 2003, 1:53 AM PDT (08:53 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M2.4 3 km NW of North Portland, Oregon. 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
1.7 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2003-08-05 08:53:23 UTC
Depth
12.8 km (7.9 mi), shallow
Epicenter
46.012° N, 122.709° 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 2.5 km horizontally, 4.0 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
108°
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 22 in the 30 days before it.

After

  1. 2.28 km S of Morton, Washington · 8452 days ago · 17 km deep · 62 km away
  2. 1.811 km SSE of Mineral, Washington · 8445 days ago · 15 km deep · 81 km away
  3. 1.615 km S of Morton, Washington · 8433 days ago · 7 km deep · 58 km away
  4. 1.73 km ESE of Trout Lake, Washington · 8429 days ago · -1 km deep · 94 km away
  5. 2.43 km NW of North Portland, Oregon · 8427 days ago · 17 km deep · 42 km away
  6. 1.72 km NW of North Portland, Oregon · 8427 days ago · 16 km deep · 43 km away
  7. 1.538 km NNE of Amboy, Washington · 8422 days ago · 0 km deep · 45 km away
  8. 1.54 km SSE of La Center, Washington · 8420 days ago · 9 km deep · 21 km away
  9. 1.5Washington · 8412 days ago · 18 km deep · 85 km away
  10. 1.94 km WNW of North Portland, Oregon · 8408 days ago · 16 km deep · 42 km away
  11. 1.66 km NNE of North Plains, Oregon · 8403 days ago · 6 km deep · 45 km away
  12. 2.024 km E of Castle Rock, Washington · 8399 days ago · 18 km deep · 26 km away

Before

  1. 2.2Washington-Oregon border region · 8461 days ago · 17 km deep · 41 km away
  2. 1.94 km NW of North Portland, Oregon · 8464 days ago · 17 km deep · 42 km away
  3. 2.110 km E of Kalama, Washington · 8465 days ago · 19 km deep · 2 km away
  4. 1.84 km NW of North Portland, Oregon · 8465 days ago · 17 km deep · 42 km away
  5. 2.43 km NW of North Portland, Oregon · 8467 days ago · 18 km deep · 42 km away
  6. 1.63 km NW of North Portland, Oregon · 8468 days ago · 16 km deep · 43 km away
  7. 2.43 km NW of North Portland, Oregon · 8468 days ago · 16 km deep · 42 km away
  8. 2.83 km NW of North Portland, Oregon · 8468 days ago · 17 km deep · 42 km away
  9. 1.73 km NW of North Portland, Oregon · 8468 days ago · 16 km deep · 42 km away
  10. 2.14 km NW of North Portland, Oregon · 8468 days ago · 16 km deep · 42 km away
  11. 1.62 km WNW of North Portland, Oregon · 8468 days ago · 15 km deep · 44 km away
  12. 1.73 km NW of North Portland, Oregon · 8468 days ago · 16 km deep · 43 km away
  13. 1.75 km NW of North Portland, Oregon · 8468 days ago · 16 km deep · 42 km away
  14. 2.13 km NW of North Portland, Oregon · 8468 days ago · 16 km deep · 43 km away
  15. 2.24 km NW of North Portland, Oregon · 8468 days ago · 17 km deep · 42 km away
  16. 2.24 km NW of North Portland, Oregon · 8469 days ago · 17 km deep · 42 km away
  17. 1.64 km WNW of North Portland, Oregon · 8469 days ago · 17 km deep · 43 km away
  18. 1.54 km NW of North Portland, Oregon · 8469 days ago · 17 km deep · 42 km away
  19. 3.04 km NW of North Portland, Oregon · 8469 days ago · 17 km deep · 41 km away · felt by 149
  20. 1.83 km NW of North Portland, Oregon · 8469 days ago · 16 km deep · 42 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10589003. Read Thu, Oct 1, 2026, 4:18 PM UTC.