Washington earthquakes

M1.7 earthquake 22 km SSE of Mossyrock, Washington

A magnitude 1.7 earthquake struck 22 km SSE of Mossyrock, Washington on Wed, May 7, 2003, 2:16 AM PDT (09:16 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M2.2 8 km ESE of Venersborg, Washington. This one was a foreshock.

Mossyrock 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
2003-05-07 09:16:34 UTC
Depth
17.7 km (11.0 mi), shallow
Epicenter
46.360° N, 122.333° 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 0.3 km horizontally, 0.4 km in depth
Magnitude uncertainty
±0.02
Depth from
From location
Station coverage gap
47°
Stations used
26

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 10 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 2.04 km NW of North Portland, Oregon · 8542 days ago · 16 km deep · 86 km away
  2. 1.524 km ENE of Ashford, Washington · 8511 days ago · -2 km deep · 73 km away
  3. 2.117 km NNE of Trout Lake, Washington · 8507 days ago · -1 km deep · 70 km away
  4. 1.55 km WNW of North Portland, Oregon · 8499 days ago · 14 km deep · 87 km away
  5. 2.28 km ESE of Venersborg, Washington · 8498 days ago · 7 km deep · 68 km away
  6. 1.536 km SSE of Morton, Washington · 8495 days ago · 9 km deep · 24 km away
  7. 1.513 km SSE of Pe Ell, Washington · 8492 days ago · 2 km deep · 71 km away
  8. 1.636 km SSE of Morton, Washington · 8491 days ago · 9 km deep · 24 km away
  9. 1.912 km NNW of Ryderwood, Washington · 8490 days ago · 49 km deep · 62 km away
  10. 1.74 km W of Dollar Corner, Washington · 8488 days ago · 16 km deep · 70 km away

Before

  1. 1.55 km WNW of North Portland, Oregon · 8550 days ago · 17 km deep · 87 km away
  2. 1.55 km WNW of North Portland, Oregon · 8550 days ago · 16 km deep · 87 km away
  3. 1.85 km WNW of North Portland, Oregon · 8551 days ago · 17 km deep · 87 km away
  4. 2.24 km NW of North Portland, Oregon · 8560 days ago · 17 km deep · 87 km away
  5. 1.55 km NW of North Portland, Oregon · 8560 days ago · 16 km deep · 87 km away
  6. 1.65 km NW of North Portland, Oregon · 8561 days ago · 17 km deep · 87 km away
  7. 3.93 km NW of North Portland, Oregon · 8561 days ago · 17 km deep · 87 km away · felt by 980
  8. 1.616 km SSE of Carbonado, Washington · 8565 days ago · 5 km deep · 70 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10582428. Read Thu, Oct 1, 2026, 1:17 PM UTC.