Washington earthquakes

M2.0 earthquake 5 km NNW of Onalaska, Washington

A magnitude 2.0 earthquake struck 5 km NNW of Onalaska, Washington on Tue, Oct 12, 1976, 2:36 PM PDT (21:36 UTC), 42 km (26 mi) below the surface.

A larger quake followed: M4.0 14 km NNW of Morton, Washington. This one was a foreshock.

Onalaska 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
2.0 (md), micro
Local time
UTC
1976-10-12 21:36:20 UTC
Depth
41.8 km (26.0 mi), shallow
Epicenter
46.616° N, 122.750° 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, 1.9 km in depth
Magnitude uncertainty
±0.07
Depth from
From location
Station coverage gap
181°, 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 6 in the 30 days before it.

After

  1. 4.014 km NNW of Morton, Washington · 18240 days ago · 16 km deep · 30 km away
  2. 2.113 km WSW of Mineral, Washington · 18240 days ago · 16 km deep · 31 km away
  3. 1.84 km S of Orting, Washington · 18234 days ago · -1 km deep · 63 km away
  4. 1.96 km N of Packwood, Washington · 18231 days ago · 1 km deep · 82 km away
  5. 2.211 km S of Greenwater, Washington · 18229 days ago · 4 km deep · 96 km away
  6. 1.517 km SW of Westport, Oregon · 18228 days ago · 10 km deep · 89 km away
  7. 1.86 km SSW of Southworth, Washington · 18218 days ago · 23 km deep · 95 km away
  8. 3.122 km ENE of Ashford, Washington · 18213 days ago · -1 km deep · 79 km away
  9. 2.924 km ENE of Ashford, Washington · 18213 days ago · 4 km deep · 81 km away
  10. 1.513 km WSW of Alder, Washington · 18205 days ago · -1 km deep · 27 km away
  11. 2.723 km N of Amboy, Washington · 18191 days ago · 4 km deep · 59 km away

Before

  1. 2.014 km NNW of Morton, Washington · 18244 days ago · 11 km deep · 31 km away
  2. 1.75 km ENE of Belfair, Washington · 18245 days ago · 19 km deep · 94 km away
  3. 2.417 km NE of Ashford, Washington · 18250 days ago · 14 km deep · 72 km away
  4. 2.212 km N of Ashford, Washington · 18259 days ago · 3 km deep · 63 km away
  5. 1.7Puget Sound region, Washington · 18268 days ago · 18 km deep · 96 km away
  6. 1.716 km NNE of Mossyrock, Washington · 18269 days ago · 12 km deep · 25 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10842353. Read Tue, Sep 22, 2026, 11:20 PM UTC.