Washington earthquakes

M2.7 earthquake 3 km W of Sedro-Woolley, Washington

A magnitude 2.7 earthquake struck 3 km W of Sedro-Woolley, Washington on Tue, Oct 10, 1972, 4:26 AM PDT (11:26 UTC), 20 km (12 mi) below the surface.

A larger quake followed: M4.1 3 km SE of Oak Bay, Canada. This one was a foreshock.

Sedro-Woolley 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, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
1972-10-10 11:26:53 UTC
Depth
19.7 km (12.2 mi), shallow
Epicenter
48.500° N, 122.286° 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 2.2 km horizontally, 2.1 km in depth
Magnitude uncertainty
±0.07
Depth from
Operator assigned
Station coverage gap
279°, poorly surrounded by stations
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 25 in the 60 days after this one and 5 in the 30 days before it.

After

  1. 2.40 km NE of Esperance, Washington · 19714 days ago · 19 km deep · 79 km away
  2. 2.96 km W of Lake Cavanaugh, Washington · 19714 days ago · 14 km deep · 22 km away
  3. 2.07 km WSW of Lofall, Washington · 19713 days ago · 18 km deep · 85 km away
  4. 3.06 km E of Deming, Washington · 19709 days ago · 11 km deep · 38 km away
  5. 1.63 km N of Woods Creek, Washington · 19707 days ago · 4 km deep · 71 km away
  6. 1.72 km ESE of Hansville, Washington · 19704 days ago · 14 km deep · 68 km away
  7. 2.10 km NNW of Alger, Washington · 19695 days ago · 25 km deep · 15 km away
  8. 3.15 km N of Brinnon, Washington · 19691 days ago · 47 km deep · 97 km away
  9. 1.712 km NNE of May Creek, Washington · 19688 days ago · 30 km deep · 78 km away
  10. 4.13 km SE of Oak Bay, Canada · 19686 days ago · 44 km deep · 74 km away
  11. 3.30 km SW of Kenmore, Washington · 19680 days ago · 18 km deep · 83 km away
  12. 1.75 km N of Lofall, Washington · 19677 days ago · 18 km deep · 76 km away
  13. 2.44 km ESE of Acme, Washington · 19673 days ago · 17 km deep · 24 km away
  14. 2.04 km ESE of Acme, Washington · 19673 days ago · 17 km deep · 24 km away
  15. 2.24 km NE of Swede Heaven, Washington · 19672 days ago · -1 km deep · 49 km away
  16. 2.07 km NE of Quilcene, Washington · 19666 days ago · 46 km deep · 80 km away
  17. 2.45 km SSE of Acme, Washington · 19666 days ago · 9 km deep · 22 km away
  18. 1.57 km WNW of Bangor Trident Base, Washington · 19665 days ago · -1 km deep · 92 km away
  19. 1.57 km NE of Brinnon, Washington · 19665 days ago · -1 km deep · 94 km away
  20. 1.75 km SW of Verlot, Washington · 19665 days ago · -1 km deep · 59 km away
  21. 2.12 km NW of Clear Lake, Washington · 19662 days ago · 22 km deep · 3 km away
  22. 3.24 km SE of Kingston, Washington · 19658 days ago · 20 km deep · 82 km away
  23. 1.76 km S of Port Hadlock-Irondale, Washington · 19658 days ago · 29 km deep · 69 km away
  24. 3.34 km WSW of Orcas, Washington · 19656 days ago · 5 km deep · 54 km away
  25. 2.03 km WNW of Orcas, Washington · 19656 days ago · 12 km deep · 53 km away

Before

  1. 1.67 km S of Port Hadlock-Irondale, Washington · 19720 days ago · 15 km deep · 70 km away
  2. 3.12 km SSE of Big Lake, Washington · 19722 days ago · 18 km deep · 14 km away
  3. 2.89 km SE of Blyn, Washington · 19730 days ago · 41 km deep · 75 km away
  4. 1.86 km WSW of Shoreline, Washington · 19743 days ago · 22 km deep · 86 km away
  5. 1.80 km S of Hunts Point, Washington · 19745 days ago · -1 km deep · 96 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10854393. Read Sat, Oct 3, 2026, 3:05 AM UTC.