Washington earthquakes

M1.7 earthquake 17 km N of Mossyrock, Washington

A magnitude 1.7 earthquake struck 17 km N of Mossyrock, Washington on Fri, May 25, 1979, 12:43 PM PDT (19:43 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M2.4 2 km W of Fox Island, 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.

Open the live map with earthquakes

The earthquake

Magnitude
1.7 (md), micro
Local time
UTC
1979-05-25 19:43:22 UTC
Depth
-1.0 km (-0.6 mi), shallow
Epicenter
46.685° N, 122.476° 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 0.2 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.09
Depth from
Operator assigned
Station coverage gap
204°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 1.632 km S of Morton, Washington · 17287 days ago · 10 km deep · 48 km away
  2. 2.42 km W of Fox Island, Washington · 17265 days ago · 23 km deep · 65 km away
  3. 1.73 km W of Covington, Washington · 17258 days ago · 1 km deep · 78 km away
  4. 2.56 km S of Vashon, Washington · 17255 days ago · 48 km deep · 78 km away
  5. 3.69 km SSW of Morton, Washington · 17244 days ago · 20 km deep · 27 km away
  6. 2.710 km SSW of Morton, Washington · 17244 days ago · 22 km deep · 28 km away
  7. 1.99 km SSW of Morton, Washington · 17243 days ago · 20 km deep · 26 km away
  8. 1.810 km SSW of Morton, Washington · 17243 days ago · 19 km deep · 26 km away
  9. 1.69 km SSW of Morton, Washington · 17242 days ago · 19 km deep · 26 km away
  10. 2.36 km W of Burley, Washington · 17241 days ago · 23 km deep · 84 km away
  11. 1.610 km NE of Hoodsport, Washington · 17238 days ago · -1 km deep · 99 km away

Before

  1. 2.216 km N of Mossyrock, Washington · 17291 days ago · 8 km deep · 1 km away
  2. 2.26 km SE of Kelso, WA · 17296 days ago · 27 km deep · 70 km away
  3. 1.84 km SSW of Des Moines, Washington · 17310 days ago · 10 km deep · 76 km away
  4. 1.55 km W of Burley, Washington · 17311 days ago · 23 km deep · 84 km away
  5. 2.018 km ESE of Carbonado, Washington · 17316 days ago · 13 km deep · 59 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10849833. Read Tue, Sep 22, 2026, 8:49 PM UTC.