Washington earthquakes

M2.5 earthquake 4 km W of Lake Cavanaugh, Washington

A magnitude 2.5 earthquake struck 4 km W of Lake Cavanaugh, Washington on Mon, Mar 5, 1973, 1:44 AM PST (09:44 UTC), 17 km (11 mi) below the surface.

A larger quake followed: M3.7 7 km W of Lofall, Washington. This one was a foreshock.

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Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.5 (md), micro
Local time
UTC
1973-03-05 09:44:42 UTC
Depth
17.4 km (10.8 mi), shallow
Epicenter
48.325° N, 122.082° 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 1.2 km horizontally, 2.1 km in depth
Magnitude uncertainty
±0.18
Depth from
From location
Station coverage gap
196°, 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: 13 in the 60 days after this one and 12 in the 30 days before it.

After

  1. 1.89 km E of Oak Harbor, Washington · 19550 days ago · 34 km deep · 33 km away
  2. 1.93 km W of Hansville, Washington · 19540 days ago · 5 km deep · 59 km away
  3. 2.09 km N of Anacortes, Washington · 19533 days ago · 3 km deep · 49 km away
  4. 2.14 km SW of Erlands Point-Kitsap Lake, Washington · 19526 days ago · 25 km deep · 97 km away
  5. 2.00 km SSE of Clyde Hill, Washington · 19520 days ago · 24 km deep · 78 km away
  6. 3.77 km W of Lofall, Washington · 19520 days ago · 50 km deep · 75 km away
  7. 2.21 km N of Issaquah, Washington · 19513 days ago · 20 km deep · 87 km away
  8. 1.71 km SSE of Indianola, Washington · 19510 days ago · 29 km deep · 73 km away
  9. 2.13 km ENE of Seabeck, Washington · 19510 days ago · 22 km deep · 92 km away
  10. 2.14 km ESE of Kingston, Washington · 19504 days ago · 21 km deep · 67 km away
  11. 1.64 km NNW of Gorst, Washington · 19503 days ago · 23 km deep · 98 km away
  12. 1.80 km SSW of Mercer Island, Washington · 19502 days ago · 22 km deep · 85 km away
  13. 1.711 km WNW of Ault Field, Washington · 19500 days ago · 23 km deep · 55 km away

Before

  1. 2.74 km N of Jamestown, Washington · 19562 days ago · 25 km deep · 76 km away
  2. 2.56 km NNE of Geneva, Washington · 19566 days ago · 8 km deep · 57 km away
  3. 2.513 km WSW of Marietta, Washington · 19567 days ago · 55 km deep · 68 km away
  4. 2.11 km NNW of White Center, Washington · 19568 days ago · 24 km deep · 91 km away
  5. 1.67 km SW of North Bend, Washington · 19568 days ago · 20 km deep · 98 km away
  6. 1.53 km NW of Indianola, Washington · 19574 days ago · 22 km deep · 71 km away
  7. 2.01 km E of Bangor Trident Base, Washington · 19577 days ago · 19 km deep · 81 km away
  8. 2.213 km SSW of May Creek, Washington · 19579 days ago · 21 km deep · 71 km away
  9. 1.65 km WSW of Mercer Island, Washington · 19579 days ago · 17 km deep · 87 km away
  10. 1.73 km ENE of Verlot, Washington · 19580 days ago · 13 km deep · 36 km away
  11. 3.04 km SW of Southworth, Washington · 19586 days ago · 46 km deep · 99 km away
  12. 1.71 km E of Sammamish, Washington · 19586 days ago · 7 km deep · 76 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10855918. Read Tue, Sep 22, 2026, 12:13 PM UTC.