Washington earthquakes

M2.1 earthquake 2 km NW of Mill Plain, Washington

A magnitude 2.1 earthquake struck 2 km NW of Mill Plain, Washington on Sat, Mar 23, 2002, 2:22 PM PST (22:22 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M2.8 5 km ENE of Government Camp, Oregon. This one was a foreshock.

Mill Plain 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), micro
Local time
UTC
2002-03-23 22:22:24 UTC
Depth
18.1 km (11.2 mi), shallow
Epicenter
45.662° N, 122.518° 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 0.7 km horizontally, 1.5 km in depth
Magnitude uncertainty
±0.04
Depth from
From location
Station coverage gap
72°
Stations used
23

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 19 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 1.710 km S of Morton, Washington · 8955 days ago · 15 km deep · 91 km away
  2. 1.58 km S of Morton, Washington · 8953 days ago · 18 km deep · 93 km away
  3. 2.14 km NNE of Cedar Mill, Oregon · 8943 days ago · 16 km deep · 24 km away
  4. 1.65 km NNE of Scotts Mills, Oregon · 8939 days ago · 29 km deep · 64 km away
  5. 1.622 km NE of Amboy, Washington · 8928 days ago · -1 km deep · 49 km away
  6. 1.95 km ENE of Government Camp, Oregon · 8926 days ago · 1 km deep · 75 km away
  7. 2.411 km SSE of Molalla, Oregon · 8917 days ago · 21 km deep · 68 km away
  8. 2.15 km ENE of Government Camp, Oregon · 8914 days ago · 0 km deep · 75 km away
  9. 2.55 km ENE of Government Camp, Oregon · 8914 days ago · 4 km deep · 75 km away
  10. 1.65 km ENE of Government Camp, Oregon · 8914 days ago · 6 km deep · 75 km away
  11. 2.85 km ENE of Government Camp, Oregon · 8914 days ago · 4 km deep · 74 km away
  12. 1.55 km ENE of Government Camp, Oregon · 8913 days ago · 6 km deep · 74 km away
  13. 2.55 km ENE of Government Camp, Oregon · 8913 days ago · 4 km deep · 75 km away
  14. 1.56 km ENE of Government Camp, Oregon · 8913 days ago · 4 km deep · 75 km away
  15. 2.05 km SE of Mossyrock, Washington · 8910 days ago · 18 km deep · 92 km away
  16. 1.63 km NE of Amboy, Washington · 8908 days ago · 9 km deep · 31 km away
  17. 1.720 km SSE of Mossyrock, Washington · 8907 days ago · 6 km deep · 78 km away
  18. 1.838 km NNE of Amboy, Washington · 8905 days ago · 2 km deep · 65 km away
  19. 1.938 km NNE of Amboy, Washington · 8897 days ago · 0 km deep · 65 km away

Before

  1. 1.713 km ESE of Molalla, Oregon · 8961 days ago · 15 km deep · 62 km away
  2. 1.62 km NNW of Maywood Park, Oregon · 8973 days ago · 21 km deep · 11 km away
  3. 1.62 km NNW of Maywood Park, Oregon · 8973 days ago · 21 km deep · 11 km away
  4. 1.510 km ESE of Molalla, Oregon · 8983 days ago · 13 km deep · 60 km away
  5. 1.79 km ESE of Molalla, Oregon · 8983 days ago · 13 km deep · 60 km away
  6. 1.69 km ESE of Molalla, Oregon · 8983 days ago · 13 km deep · 59 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10554183. Read Wed, Sep 30, 2026, 11:43 PM UTC.