Washington earthquakes

M1.5 earthquake 4 km N of Oso, Washington

A magnitude 1.5 earthquake struck 4 km N of Oso, Washington on Sun, Jul 21, 2002, 8:15 PM PDT (03:15 UTC), 3 km (2 mi) below the surface.

A larger quake followed: M3.3 1 km NNE of East Hill-Meridian, Washington. This one was a foreshock.

Arlington Heights forecastMore in Washington

Map

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

Open the live map with earthquakes

The earthquake

Magnitude
1.5 (md), micro
Local time
UTC
2002-07-22 03:15:20 UTC
Depth
2.9 km (1.8 mi), shallow
Epicenter
48.309° N, 121.932° 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, 0.8 km in depth
Magnitude uncertainty
±0.05
Depth from
Operator assigned
Station coverage gap
104°
Stations used
9

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 22 in the 60 days after this one and 11 in the 30 days before it.

After

  1. 2.15 km NE of Oso, Washington · 8837 days ago · -1 km deep · 3 km away
  2. 1.95 km NE of Oso, Washington · 8837 days ago · -1 km deep · 4 km away
  3. 1.79 km N of Rockport, Washington · 8834 days ago · 3 km deep · 39 km away
  4. 1.5Washington · 8833 days ago · 3 km deep · 1 km away
  5. 1.78 km ENE of Marrowstone, Washington · 8833 days ago · 23 km deep · 54 km away
  6. 1.71 km S of Lochsloy, Washington · 8831 days ago · 0 km deep · 31 km away
  7. 2.63 km E of Port Hadlock-Irondale, Washington · 8828 days ago · 58 km deep · 67 km away
  8. 3.31 km NNE of East Hill-Meridian, Washington · 8828 days ago · 60 km deep · 100 km away
  9. 1.948 km WNW of Granite Falls, Washington · 8824 days ago · 4 km deep · 87 km away
  10. 2.04 km SW of Inglewood-Finn Hill, Washington · 8820 days ago · 21 km deep · 73 km away
  11. 1.85 km SSW of Sultan, Washington · 8816 days ago · 17 km deep · 56 km away
  12. 1.84 km NE of Edison, Washington · 8815 days ago · 12 km deep · 46 km away
  13. 1.93 km ENE of Granite Falls, Washington · 8804 days ago · -1 km deep · 24 km away
  14. 1.81 km NNW of Tukwila, Washington · 8801 days ago · 10 km deep · 95 km away
  15. 1.85 km E of North Stanwood, Washington · 8795 days ago · 0 km deep · 26 km away
  16. 1.62 km SE of Alger, Washington · 8793 days ago · 14 km deep · 43 km away
  17. 2.39 km NNE of Hamilton, Washington · 8783 days ago · -1 km deep · 33 km away
  18. 1.510 km N of Hamilton, Washington · 8783 days ago · 3 km deep · 34 km away
  19. 2.39 km N of Hamilton, Washington · 8783 days ago · -1 km deep · 33 km away
  20. 1.611 km NE of Snoqualmie, Washington · 8781 days ago · 5 km deep · 80 km away
  21. 1.71 km SSE of Lyman, Washington · 8780 days ago · -1 km deep · 25 km away
  22. 2.06 km NE of Snoqualmie, Washington · 8779 days ago · 11 km deep · 83 km away

Before

  1. 1.52 km N of Oso, Washington · 8844 days ago · 0 km deep · 2 km away
  2. 1.74 km NNE of Oso, Washington · 8844 days ago · 3 km deep · 2 km away
  3. 1.52 km E of Oso, Washington · 8849 days ago · 13 km deep · 5 km away
  4. 1.75 km NNE of Oso, Washington · 8851 days ago · 1 km deep · 1 km away
  5. 1.81 km E of North Creek, Washington · 8851 days ago · 23 km deep · 57 km away
  6. 2.17 km E of Deming, Washington · 8853 days ago · 11 km deep · 59 km away
  7. 1.719 km NW of Orcas, Washington · 8855 days ago · 17 km deep · 100 km away
  8. 1.62 km NE of Marrowstone, Washington · 8857 days ago · 31 km deep · 61 km away
  9. 1.74 km NW of Bryant, Washington · 8862 days ago · 12 km deep · 20 km away
  10. 1.94 km SSE of Carnation, Washington · 8864 days ago · 14 km deep · 77 km away
  11. 1.83 km NE of Fall City, Washington · 8866 days ago · 15 km deep · 81 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10564668. Read Wed, Sep 30, 2026, 8:44 PM UTC.