Washington earthquakes

M2.2 earthquake 11 km SSW of Seabeck, Washington

A magnitude 2.2 earthquake struck 11 km SSW of Seabeck, Washington on Sun, Apr 2, 1978, 2:18 PM PST (22:18 UTC), 16 km (10 mi) below the surface.

A larger quake followed: M2.3 9 km SSW of Gold Bar, Washington. This one was a foreshock.

Seabeck 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
2.2 (md), micro
Local time
UTC
1978-04-02 22:18:35 UTC
Depth
15.8 km (9.8 mi), shallow
Epicenter
47.555° N, 122.909° 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 0.5 km horizontally, 0.8 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
123°
Stations used
18

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 16 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 1.510 km SSW of Index, Washington · 17702 days ago · 3 km deep · 98 km away
  2. 1.86 km WNW of Burley, Washington · 17700 days ago · 23 km deep · 20 km away
  3. 1.86 km W of Burley, Washington · 17700 days ago · 22 km deep · 21 km away
  4. 1.55 km SE of Hansville, Washington · 17681 days ago · 50 km deep · 48 km away
  5. 2.23 km WSW of Artondale, Washington · 17681 days ago · 23 km deep · 34 km away
  6. 1.72 km W of Artondale, Washington · 17680 days ago · 23 km deep · 34 km away
  7. 1.75 km W of Burley, Washington · 17675 days ago · 21 km deep · 22 km away
  8. 1.92 km SSE of Belfair, Washington · 17674 days ago · 19 km deep · 16 km away
  9. 1.62 km N of Artondale, Washington · 17672 days ago · 20 km deep · 34 km away
  10. 2.39 km SSW of Gold Bar, Washington · 17671 days ago · 3 km deep · 90 km away
  11. 2.06 km WNW of Burley, Washington · 17667 days ago · 15 km deep · 20 km away
  12. 2.76 km SE of Shelton, Washington · 17667 days ago · 38 km deep · 43 km away
  13. 1.57 km W of Burley, Washington · 17666 days ago · 24 km deep · 20 km away
  14. 1.82 km E of Sammamish, Washington · 17663 days ago · 11 km deep · 65 km away
  15. 1.83 km N of Woods Creek, Washington · 17660 days ago · 5 km deep · 85 km away
  16. 1.57 km WSW of Ault Field, Washington · 17650 days ago · 15 km deep · 85 km away

Before

  1. 4.16 km W of Burley, Washington · 17706 days ago · 21 km deep · 21 km away
  2. 2.95 km WSW of Coupeville, Washington · 17708 days ago · 21 km deep · 72 km away
  3. 1.72 km W of La Conner, Washington · 17711 days ago · 22 km deep · 97 km away
  4. 1.54 km W of Burley, Washington · 17725 days ago · 25 km deep · 22 km away
  5. 1.74 km W of Burley, Washington · 17726 days ago · 21 km deep · 22 km away
  6. 2.25 km W of Burley, Washington · 17726 days ago · 21 km deep · 22 km away
  7. 1.85 km W of Burley, Washington · 17726 days ago · 22 km deep · 22 km away
  8. 1.53 km W of Burley, Washington · 17726 days ago · 22 km deep · 23 km away
  9. 4.85 km W of Burley, Washington · 17726 days ago · 22 km deep · 21 km away
  10. 1.50 km E of Inglewood-Finn Hill, Washington · 17730 days ago · 9 km deep · 54 km away
  11. 1.58 km ENE of Marrowstone, Washington · 17731 days ago · 54 km deep · 63 km away
  12. 3.54 km NE of Blyn, Washington · 17732 days ago · 53 km deep · 55 km away
  13. 1.82 km SW of Suquamish, Washington · 17733 days ago · 17 km deep · 30 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10846413. Read Mon, Sep 21, 2026, 4:58 PM UTC.