Washington earthquakes

M2.7 earthquake 7 km SSW of Mossyrock, Washington

A magnitude 2.7 earthquake struck 7 km SSW of Mossyrock, Washington on Wed, Jan 24, 1973, 5:32 AM PST (13:32 UTC), 29 km (18 mi) below the surface.

A larger quake followed: M3.3 29 km NE of Yacolt, 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
2.7 (md), micro
Local time
UTC
1973-01-24 13:32:06 UTC
Depth
28.8 km (17.9 mi), shallow
Epicenter
46.470° N, 122.525° 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 3.3 km horizontally, 7.0 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
175°
Stations used
8

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 2 in the 30 days before it.

After

  1. 3.329 km NE of Yacolt, Washington · 19595 days ago · 2 km deep · 59 km away
  2. 2.815 km SE of Ashford, Washington · 19584 days ago · 7 km deep · 56 km away
  3. 2.66 km SSE of Brady, Washington · 19580 days ago · 28 km deep · 90 km away
  4. 3.87 km W of Home, Washington · 19571 days ago · 21 km deep · 92 km away
  5. 1.62 km NNW of Kapowsin, Washington · 19568 days ago · 67 km deep · 64 km away
  6. 2.77 km SW of Morton, Washington · 19566 days ago · 15 km deep · 15 km away
  7. 2.531 km S of Mossyrock, Washington · 19565 days ago · 10 km deep · 26 km away
  8. 2.77 km SE of Mineral, Washington · 19559 days ago · 19 km deep · 38 km away
  9. 1.76 km SE of Mineral, Washington · 19556 days ago · 16 km deep · 38 km away
  10. 2.212 km NE of Ashford, Washington · 19551 days ago · 6 km deep · 62 km away
  11. 2.142 km NE of Amboy, Washington · 19549 days ago · 2 km deep · 49 km away
  12. 2.43 km NNE of Dash Point, Washington · 19540 days ago · 24 km deep · 98 km away

Before

  1. 2.229 km N of Amboy, Washington · 19600 days ago · 17 km deep · 34 km away
  2. 1.722 km WSW of Packwood, Washington · 19626 days ago · 3 km deep · 45 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10855588. Read Tue, Sep 22, 2026, 8:47 PM UTC.