Washington earthquakes

M1.5 earthquake 7 km S of Anacortes, Washington

A magnitude 1.5 earthquake struck 7 km S of Anacortes, Washington on Fri, Apr 28, 2006, 4:33 AM PDT (11:33 UTC), 23 km (14 mi) below the surface.

A larger quake followed: M2.5 4 km S of Langley, Washington. This one was a foreshock.

Anacortes 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
1.5 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2006-04-28 11:33:53 UTC
Depth
22.7 km (14.1 mi), shallow
Epicenter
48.444° N, 122.623° 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
±0.06
Depth from
From location
Station coverage gap
61°
Stations used
20

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 20 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 2.21 km NW of Snohomish, Washington · 7461 days ago · 25 km deep · 69 km away
  2. 1.511 km W of Port Ludlow, Washington · 7448 days ago · 33 km deep · 60 km away
  3. 1.53 km N of Langley, Canada · 7440 days ago · 1 km deep · 76 km away
  4. 1.71 km NW of Lake Marcel-Stillwater, Washington · 7439 days ago · 27 km deep · 97 km away
  5. 1.94 km NE of Big Lake, Washington · 7435 days ago · -1 km deep · 32 km away
  6. 1.95 km SW of Ault Field, Washington · 7434 days ago · 18 km deep · 17 km away
  7. 1.84 km W of Lake Cavanaugh, Washington · 7428 days ago · 13 km deep · 42 km away
  8. 2.54 km S of Langley, Washington · 7425 days ago · 57 km deep · 52 km away
  9. 1.59 km NE of Oak Bay, Canada · 7423 days ago · 24 km deep · 44 km away
  10. 2.31 km WSW of Lyman, Washington · 7423 days ago · -1 km deep · 41 km away
  11. 1.74 km SE of Clear Lake, Washington · 7420 days ago · -1 km deep · 32 km away
  12. 2.46 km WSW of Darrington, Washington · 7419 days ago · 8 km deep · 74 km away
  13. 2.03 km E of Deming, Washington · 7419 days ago · -1 km deep · 54 km away
  14. 1.58 km N of Camano, Washington · 7418 days ago · 27 km deep · 22 km away
  15. 2.10 km SE of Oak Harbor, Washington · 7416 days ago · 24 km deep · 17 km away
  16. 1.5Washington · 7410 days ago · -1 km deep · 30 km away
  17. 2.28 km E of Deming, Washington · 7409 days ago · 15 km deep · 58 km away
  18. 1.61 km NE of Granite Falls, Washington · 7408 days ago · -1 km deep · 63 km away
  19. 1.62 km E of Cottage Lake, Washington · 7405 days ago · 18 km deep · 89 km away
  20. 2.010 km NE of Jamestown, Washington · 7404 days ago · 22 km deep · 39 km away

Before

  1. 1.92 km ENE of Granite Falls, Washington · 7466 days ago · -1 km deep · 64 km away
  2. 1.99 km SW of Concrete, Washington · 7469 days ago · 6 km deep · 59 km away
  3. 2.04 km ENE of Ganges, Canada · 7478 days ago · 37 km deep · 77 km away
  4. 1.58 km SW of Concrete, Washington · 7480 days ago · 5 km deep · 58 km away
  5. 1.53 km NE of Union Hill-Novelty Hill, Washington · 7483 days ago · 3 km deep · 95 km away
  6. 1.51 km SSW of Walnut Grove, Canada · 7483 days ago · 12 km deep · 78 km away
  7. 1.62 km NW of Edmonds, Washington · 7485 days ago · 21 km deep · 70 km away
  8. 1.61 km ENE of Keyport, Washington · 7487 days ago · 21 km deep · 82 km away
  9. 2.00 km NW of Keyport, Washington · 7488 days ago · 22 km deep · 82 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10699368. Read Sat, Oct 3, 2026, 2:40 AM UTC.