Washington earthquakes

M1.5 earthquake 3 km N of Lyman, Washington

A magnitude 1.5 earthquake struck 3 km N of Lyman, Washington on Wed, Aug 20, 2025, 8:27 PM PDT (03:27 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.9 7 km ENE of Marrowstone, Washington. 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
1.5 (ML, local (Richter)), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2025-08-21 03:27:23 UTC
Depth
5.5 km (3.4 mi), shallow
Epicenter
48.560° N, 122.052° 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 0.3 km horizontally, 0.5 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
138°
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: 17 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.92 km ESE of Mount Vernon, Washington · 408 days ago · 10 km deep · 25 km away · felt by 164
  2. 2.22 km SE of Mount Vernon, Washington · 408 days ago · 10 km deep · 25 km away · felt by 2
  3. 2.42 km ESE of Mount Vernon, Washington · 407 days ago · 10 km deep · 25 km away · felt by 3
  4. 1.91 km NNE of Suquamish, Washington · 405 days ago · 56 km deep · 98 km away · felt by 2
  5. 1.516 km SE of Glacier, Washington · 404 days ago · -1 km deep · 31 km away
  6. 1.94 km WSW of Shoreline, Washington · 404 days ago · 28 km deep · 94 km away · felt by 3
  7. 1.82 km ESE of Mount Vernon, Washington · 396 days ago · 15 km deep · 25 km away
  8. 1.68 km SW of Chilliwack, Canada · 390 days ago · 10 km deep · 61 km away
  9. 2.312 km NNE of Maple Ridge, Canada · 389 days ago · 12 km deep · 91 km away · felt by 95
  10. 1.810 km S of Point Roberts, Washington · 383 days ago · 15 km deep · 83 km away
  11. 2.97 km ENE of Marrowstone, Washington · 382 days ago · 54 km deep · 68 km away · felt by 71
  12. 2.16 km WNW of Coupeville, Washington · 377 days ago · 23 km deep · 64 km away
  13. 1.88 km SSW of Birch Bay, Washington · 375 days ago · 17 km deep · 64 km away
  14. 1.710 km N of Jamestown, Washington · 368 days ago · 17 km deep · 84 km away · felt by 1
  15. 2.15 km WNW of Lynden, Washington · 363 days ago · 17 km deep · 57 km away · felt by 10
  16. 1.68 km NNE of Sedro-Woolley, Washington · 360 days ago · 9 km deep · 10 km away
  17. 1.74 km W of Mount Vernon, Washington · 356 days ago · 10 km deep · 29 km away

Before

  1. 1.710 km NNE of Mission, Canada · 414 days ago · 5 km deep · 74 km away
  2. 1.76 km SE of Port Ludlow, Washington · 415 days ago · 19 km deep · 87 km away
  3. 1.511 km WNW of Ault Field, Washington · 424 days ago · 19 km deep · 60 km away
  4. 2.33 km SW of Oak Harbor, Washington · 427 days ago · 28 km deep · 56 km away · felt by 2
  5. 2.143 km ENE of Marblemount, Washington · 427 days ago · 10 km deep · 83 km away · felt by 1
  6. 1.914 km N of Jamestown, Washington · 427 days ago · 24 km deep · 84 km away · felt by 1
  7. 1.76 km E of North Saanich, Canada · 431 days ago · 18 km deep · 95 km away
  8. 1.56 km ESE of Glacier, Washington · 433 days ago · 20 km deep · 37 km away
  9. 1.67 km NNE of Sedro-Woolley, Washington · 435 days ago · 7 km deep · 10 km away
  10. 1.91 km SSE of Echo Lake, Washington · 435 days ago · 29 km deep · 88 km away
  11. 1.65 km SE of Port Ludlow, Washington · 437 days ago · 22 km deep · 86 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw62174376. Read Sat, Oct 3, 2026, 12:45 PM UTC.