Washington earthquakes

M2.0 earthquake 31 km S of Morton, Washington

A magnitude 2.0 earthquake struck 31 km S of Morton, Washington on Wed, Aug 18, 1976, 10:42 AM PDT (17:42 UTC), 18 km (11 mi) below the surface.

A larger quake followed: M2.2 21 km SSE of Mossyrock, Washington. This one was a foreshock.

Morton 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
2.0 (md), micro
Local time
UTC
1976-08-18 17:42:29 UTC
Depth
18.4 km (11.5 mi), shallow
Epicenter
46.279° N, 122.267° 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.

Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
152°
Stations used
4

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 4 in the 30 days before it.

After

  1. 1.510 km WNW of Packwood, Washington · 18296 days ago · -1 km deep · 53 km away
  2. 2.221 km SSE of Mossyrock, Washington · 18296 days ago · 3 km deep · 12 km away
  3. 1.628 km NW of Trout Lake, Washington · 18282 days ago · 9 km deep · 40 km away
  4. 1.62 km ENE of Brush Prairie, Washington · 18282 days ago · 10 km deep · 63 km away
  5. 1.515 km SW of Alder, Washington · 18280 days ago · 9 km deep · 48 km away
  6. 1.94 km W of Packwood, Washington · 18278 days ago · 5 km deep · 55 km away
  7. 1.730 km N of Amboy, Washington · 18275 days ago · 1 km deep · 19 km away
  8. 1.611 km S of Ashford, WA · 18275 days ago · 38 km deep · 46 km away
  9. 1.716 km NNE of Mossyrock, Washington · 18269 days ago · 12 km deep · 46 km away
  10. 2.212 km N of Ashford, Washington · 18259 days ago · 3 km deep · 68 km away
  11. 2.417 km NE of Ashford, Washington · 18250 days ago · 14 km deep · 73 km away
  12. 2.014 km NNW of Morton, Washington · 18244 days ago · 11 km deep · 44 km away
  13. 2.05 km NNW of Onalaska, Washington · 18242 days ago · 42 km deep · 53 km away
  14. 4.014 km NNW of Morton, Washington · 18240 days ago · 16 km deep · 45 km away
  15. 2.113 km WSW of Mineral, Washington · 18239 days ago · 16 km deep · 45 km away

Before

  1. 1.65 km ENE of Onalaska, Washington · 18308 days ago · 23 km deep · 47 km away
  2. 1.739 km SSE of Morton, Washington · 18309 days ago · 4 km deep · 15 km away
  3. 1.824 km NW of Trout Lake, Washington · 18315 days ago · 3 km deep · 43 km away
  4. 1.931 km SSE of Mossyrock, Washington · 18318 days ago · 3 km deep · 11 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10842003. Read Tue, Sep 22, 2026, 9:59 AM UTC.