Washington earthquakes

M1.5 earthquake 2 km SW of Sudden Valley, Washington

A magnitude 1.5 earthquake struck 2 km SW of Sudden Valley, Washington on Sun, Feb 25, 1990, 9:27 PM PST (05:27 UTC), 8 km (5 mi) below the surface.

A larger quake followed: M5.0 4 km ENE of Deming, Washington. This one was a foreshock.

Sudden Valley 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
1990-02-26 05:27:19 UTC
Depth
8.1 km (5.1 mi), shallow
Epicenter
48.707° N, 122.371° 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 0.5 km horizontally
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
53°
Stations used
15

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 108 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 2.12 km NW of Lyman, Washington · 13362 days ago · 0 km deep · 28 km away
  2. 1.93 km WSW of Swede Heaven, Washington · 13357 days ago · 2 km deep · 65 km away
  3. 1.53 km SW of Swede Heaven, Washington · 13357 days ago · 3 km deep · 67 km away
  4. 3.62 km WSW of Swede Heaven, Washington · 13356 days ago · 3 km deep · 66 km away
  5. 2.53 km WSW of Swede Heaven, Washington · 13356 days ago · 2 km deep · 66 km away
  6. 2.93 km WSW of Swede Heaven, Washington · 13356 days ago · 2 km deep · 66 km away
  7. 1.53 km SW of Swede Heaven, Washington · 13356 days ago · 7 km deep · 67 km away
  8. 1.52 km WSW of Swede Heaven, Washington · 13355 days ago · 2 km deep · 66 km away
  9. 2.41 km WNW of Lyman, Washington · 13355 days ago · -1 km deep · 28 km away
  10. 2.3Washington · 13355 days ago · 0 km deep · 29 km away
  11. 2.72 km WSW of Swede Heaven, Washington · 13355 days ago · 1 km deep · 65 km away
  12. 1.63 km WSW of Swede Heaven, Washington · 13355 days ago · 2 km deep · 65 km away
  13. 1.93 km WSW of Swede Heaven, Washington · 13354 days ago · 2 km deep · 65 km away
  14. 2.16 km SW of Lyman, Washington · 13351 days ago · 3 km deep · 29 km away
  15. 1.83 km NE of Bryant, Washington · 13350 days ago · 17 km deep · 53 km away
  16. 2.17 km SSW of Aldergrove, Canada · 13349 days ago · 13 km deep · 35 km away
  17. 1.50 km ENE of Sudden Valley, Washington · 13346 days ago · 16 km deep · 3 km away
  18. 2.4Puget Sound region, Washington · 13346 days ago · 16 km deep · 89 km away
  19. 1.91 km NW of Lyman, Washington · 13341 days ago · -1 km deep · 29 km away
  20. 4.32 km ENE of Deming, Washington · 13332 days ago · 0 km deep · 19 km away
  21. 1.65 km NE of Deming, Washington · 13332 days ago · 19 km deep · 22 km away
  22. 2.52 km ESE of Deming, Washington · 13332 days ago · -1 km deep · 18 km away
  23. 2.12 km SE of Deming, Washington · 13332 days ago · 9 km deep · 18 km away
  24. 1.92 km ENE of Deming, Washington · 13332 days ago · 0 km deep · 19 km away
  25. 2.31 km ESE of Deming, Washington · 13332 days ago · 0 km deep · 18 km away
  26. 2.03 km NE of Deming, Washington · 13332 days ago · 1 km deep · 21 km away
  27. 2.02 km SE of Deming, Washington · 13332 days ago · 0 km deep · 18 km away
  28. 1.70 km NNW of Kendall, Washington · 13332 days ago · -1 km deep · 29 km away
  29. 2.023 km NNW of Chilliwack, Canada · 13332 days ago · 1 km deep · 73 km away
  30. 1.52 km S of Kendall, Washington · 13331 days ago · -1 km deep · 27 km away
  31. 4.03 km ENE of Deming, Washington · 13331 days ago · 1 km deep · 20 km away
  32. 2.14 km NE of Deming, Washington · 13331 days ago · 3 km deep · 22 km away
  33. 1.90 km SE of Deming, Washington · 13331 days ago · 1 km deep · 17 km away
  34. 1.52 km SE of Deming, Washington · 13331 days ago · -1 km deep · 18 km away
  35. 1.510 km N of Hamilton, Washington · 13331 days ago · -1 km deep · 31 km away
  36. 1.81 km NE of Deming, Washington · 13331 days ago · -1 km deep · 19 km away
  37. 2.42 km ESE of Deming, Washington · 13331 days ago · 1 km deep · 19 km away
  38. 1.62 km W of Kendall, Washington · 13330 days ago · 5 km deep · 27 km away
  39. 1.82 km ESE of Deming, Washington · 13329 days ago · -1 km deep · 19 km away
  40. 2.73 km ENE of Deming, Washington · 13329 days ago · 4 km deep · 21 km away
  41. 1.61 km WSW of Peaceful Valley, Washington · 13329 days ago · 13 km deep · 29 km away
  42. 2.22 km E of Deming, Washington · 13320 days ago · 0 km deep · 19 km away
  43. 5.04 km ENE of Deming, Washington · 13320 days ago · 12 km deep · 22 km away
  44. 4.02 km ESE of Deming, Washington · 13320 days ago · 3 km deep · 19 km away
  45. 1.83 km SE of Deming, Washington · 13320 days ago · -1 km deep · 17 km away
  46. 2.12 km E of Deming, Washington · 13320 days ago · 0 km deep · 19 km away
  47. 3.62 km E of Deming, Washington · 13320 days ago · 2 km deep · 20 km away
  48. 1.54 km ENE of Deming, Washington · 13320 days ago · 12 km deep · 22 km away
  49. 3.11 km E of Deming, Washington · 13320 days ago · 1 km deep · 19 km away
  50. 3.01 km ENE of Deming, Washington · 13320 days ago · 1 km deep · 19 km away
  51. 1.73 km ESE of Deming, Washington · 13320 days ago · 2 km deep · 19 km away
  52. 2.11 km ESE of Deming, Washington · 13320 days ago · 3 km deep · 18 km away
  53. 1.55 km N of Acme, Washington · 13320 days ago · -1 km deep · 13 km away
  54. 2.01 km ENE of Deming, Washington · 13320 days ago · 1 km deep · 19 km away
  55. 1.77 km E of Deming, Washington · 13320 days ago · 2 km deep · 23 km away
  56. 2.03 km E of Deming, Washington · 13320 days ago · 1 km deep · 20 km away
  57. 1.813 km ENE of Acme, Washington · 13320 days ago · -1 km deep · 26 km away
  58. 1.82 km E of Deming, Washington · 13320 days ago · 4 km deep · 19 km away
  59. 1.64 km NNE of Deming, Washington · 13320 days ago · 1 km deep · 22 km away
  60. 1.52 km ESE of Deming, Washington · 13320 days ago · -1 km deep · 19 km away

The first 60 of 108.

Before

  1. 1.64 km SW of Big Lake, Washington · 13370 days ago · 14 km deep · 38 km away
  2. 1.63 km E of Granite Falls, Washington · 13370 days ago · -1 km deep · 76 km away
  3. 1.913 km ENE of Verlot, Washington · 13371 days ago · 8 km deep · 86 km away
  4. 2.47 km ESE of Verlot, Washington · 13372 days ago · 3 km deep · 87 km away
  5. 3.45 km NNW of Woods Creek, Washington · 13378 days ago · 16 km deep · 93 km away
  6. 1.95 km SE of Swede Heaven, Washington · 13386 days ago · 8 km deep · 72 km away
  7. 1.60 km NE of Conway, Washington · 13397 days ago · 12 km deep · 40 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10257903. Read Fri, Oct 2, 2026, 8:07 AM UTC.