Washington earthquakes

M2.1 earthquake 10 km E of Kalama, Washington

A magnitude 2.1 earthquake struck 10 km E of Kalama, Washington on Mon, Jul 28, 2003, 11:21 PM PDT (06:21 UTC), 19 km (12 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
2.1 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2003-07-29 06:21:40 UTC
Depth
19.0 km (11.8 mi), shallow
Epicenter
45.997° N, 122.714° 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, 1.1 km in depth
Magnitude uncertainty
±0.03
Depth from
From location
Station coverage gap
52°
Stations used
40

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 15 in the 60 days after this one and 24 in the 30 days before it.

After

  1. 1.94 km NW of North Portland, Oregon · 8464 days ago · 17 km deep · 40 km away
  2. 2.2Washington-Oregon border region · 8461 days ago · 17 km deep · 40 km away
  3. 1.710 km E of Kalama, Washington · 8458 days ago · 13 km deep · 2 km away
  4. 2.28 km S of Morton, Washington · 8452 days ago · 17 km deep · 64 km away
  5. 1.611 km ESE of Molalla, Oregon · 8449 days ago · 14 km deep · 100 km away
  6. 1.811 km SSE of Mineral, Washington · 8445 days ago · 15 km deep · 83 km away
  7. 1.615 km S of Morton, Washington · 8433 days ago · 7 km deep · 59 km away
  8. 1.73 km ESE of Trout Lake, Washington · 8429 days ago · -1 km deep · 94 km away
  9. 2.43 km NW of North Portland, Oregon · 8427 days ago · 17 km deep · 41 km away
  10. 1.72 km NW of North Portland, Oregon · 8427 days ago · 16 km deep · 41 km away
  11. 1.538 km NNE of Amboy, Washington · 8423 days ago · 0 km deep · 47 km away
  12. 1.54 km SSE of La Center, Washington · 8420 days ago · 9 km deep · 20 km away
  13. 1.510 km ESE of Molalla, Oregon · 8419 days ago · 14 km deep · 99 km away
  14. 1.5Washington · 8412 days ago · 18 km deep · 87 km away
  15. 1.94 km WNW of North Portland, Oregon · 8409 days ago · 16 km deep · 41 km away

Before

  1. 1.84 km NW of North Portland, Oregon · 8466 days ago · 17 km deep · 40 km away
  2. 2.43 km NW of North Portland, Oregon · 8467 days ago · 18 km deep · 40 km away
  3. 1.63 km NW of North Portland, Oregon · 8468 days ago · 16 km deep · 41 km away
  4. 2.43 km NW of North Portland, Oregon · 8468 days ago · 16 km deep · 40 km away
  5. 2.83 km NW of North Portland, Oregon · 8468 days ago · 17 km deep · 40 km away
  6. 1.73 km NW of North Portland, Oregon · 8468 days ago · 16 km deep · 41 km away
  7. 2.14 km NW of North Portland, Oregon · 8468 days ago · 16 km deep · 40 km away
  8. 1.62 km WNW of North Portland, Oregon · 8468 days ago · 15 km deep · 42 km away
  9. 1.73 km NW of North Portland, Oregon · 8468 days ago · 16 km deep · 41 km away
  10. 1.75 km NW of North Portland, Oregon · 8469 days ago · 16 km deep · 40 km away
  11. 2.13 km NW of North Portland, Oregon · 8469 days ago · 16 km deep · 41 km away
  12. 2.24 km NW of North Portland, Oregon · 8469 days ago · 17 km deep · 40 km away
  13. 2.24 km NW of North Portland, Oregon · 8469 days ago · 17 km deep · 40 km away
  14. 1.64 km WNW of North Portland, Oregon · 8469 days ago · 17 km deep · 41 km away
  15. 1.54 km NW of North Portland, Oregon · 8469 days ago · 17 km deep · 40 km away
  16. 3.04 km NW of North Portland, Oregon · 8469 days ago · 17 km deep · 40 km away · felt by 149
  17. 1.83 km NW of North Portland, Oregon · 8470 days ago · 16 km deep · 40 km away
  18. 1.62 km NE of Orchards, Washington · 8485 days ago · 15 km deep · 37 km away
  19. 1.911 km S of Morton, Washington · 8486 days ago · 11 km deep · 61 km away
  20. 1.74 km W of Dollar Corner, Washington · 8489 days ago · 16 km deep · 25 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10603013. Read Thu, Oct 1, 2026, 8:10 PM UTC.