Washington earthquakes

M1.8 earthquake 23 km ENE of Ashford, Washington

A magnitude 1.8 earthquake struck 23 km ENE of Ashford, Washington on Thu, Aug 14, 2003, 12:35 AM PDT (07:35 UTC), -2 km (-1 mi) below the surface.

A larger quake followed: M2.1 8 km NE of Lake Marcel-Stillwater, 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
1.8 (Md, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2003-08-14 07:35:40 UTC
Depth
-1.9 km (-1.2 mi), shallow
Epicenter
46.868° N, 121.769° 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 3.3 km horizontally, 4.1 km in depth
Magnitude uncertainty
±0.04
Depth from
Operator assigned
Station coverage gap
209°, poorly surrounded by stations
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 21 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.910 km NNE of Snoqualmie, Washington · 8449 days ago · 12 km deep · 83 km away
  2. 2.18 km NE of Lake Marcel-Stillwater, Washington · 8448 days ago · 6 km deep · 98 km away
  3. 1.811 km SSE of Mineral, Washington · 8445 days ago · 15 km deep · 39 km away
  4. 1.512 km WSW of Greenwater, Washington · 8439 days ago · 5 km deep · 29 km away
  5. 1.76 km ESE of Tampico, Washington · 8437 days ago · -1 km deep · 84 km away
  6. 1.613 km NE of Nile, Washington · 8433 days ago · 6 km deep · 71 km away
  7. 1.615 km S of Morton, Washington · 8433 days ago · 7 km deep · 62 km away
  8. 1.538 km NNE of Amboy, Washington · 8423 days ago · 0 km deep · 81 km away
  9. 1.84 km N of Lake Marcel-Stillwater, Washington · 8419 days ago · 6 km deep · 97 km away
  10. 1.5Washington · 8412 days ago · 18 km deep · 47 km away
  11. 2.06 km NE of Fall City, Washington · 8412 days ago · 17 km deep · 83 km away
  12. 1.91 km WSW of Maple Valley, Washington · 8401 days ago · 8 km deep · 62 km away
  13. 1.61 km WNW of Maple Valley, Washington · 8400 days ago · 6 km deep · 63 km away
  14. 2.024 km E of Castle Rock, Washington · 8399 days ago · 18 km deep · 95 km away
  15. 1.61 km NNW of Gig Harbor, Washington · 8399 days ago · 29 km deep · 82 km away
  16. 1.727 km SW of White Swan, Washington · 8398 days ago · -1 km deep · 94 km away
  17. 1.911 km SE of Skykomish, Washington · 8396 days ago · 5 km deep · 92 km away
  18. 1.710 km SSE of Mineral, Washington · 8395 days ago · 16 km deep · 38 km away
  19. 1.81 km NW of Maple Valley, Washington · 8395 days ago · 11 km deep · 63 km away
  20. 1.50 km ENE of Maple Valley, Washington · 8395 days ago · 9 km deep · 62 km away
  21. 1.62 km NE of Fall City, Washington · 8390 days ago · 7 km deep · 80 km away

Before

  1. 1.51 km NNW of Lake Marcel-Stillwater, Washington · 8450 days ago · 27 km deep · 94 km away
  2. 2.28 km S of Morton, Washington · 8452 days ago · 17 km deep · 58 km away
  3. 1.92 km N of Lake Marcel-Stillwater, Washington · 8453 days ago · 28 km deep · 95 km away
  4. 1.51 km WNW of Lake Marcel-Stillwater, Washington · 8459 days ago · 25 km deep · 93 km away
  5. 1.65 km ENE of Carnation, Washington · 8467 days ago · 7 km deep · 89 km away
  6. 2.130 km ESE of Packwood, Washington · 8471 days ago · 0 km deep · 56 km away
  7. 1.93 km SE of Klahanie, Washington · 8472 days ago · 17 km deep · 77 km away
  8. 1.51 km N of Carnation, Washington · 8479 days ago · 21 km deep · 89 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10591363. Read Thu, Oct 1, 2026, 7:13 PM UTC.