Washington earthquakes

M1.8 earthquake 3 km WSW of Chico, Washington

A magnitude 1.8 earthquake struck 3 km WSW of Chico, Washington on Mon, Dec 20, 1982, 10:25 AM PST (18:25 UTC), 11 km (7 mi) below the surface.

A larger quake followed: M2.3 5 km SE of Hansville, Washington. This one was a foreshock.

Chico 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
1.8 (md), micro
Local time
UTC
1982-12-20 18:25:06 UTC
Depth
10.9 km (6.8 mi), shallow
Epicenter
47.597° N, 122.747° 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, 0.4 km in depth
Magnitude uncertainty
±0.14
Depth from
Operator assigned
Station coverage gap
89°
Stations used
6

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 39 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 2.35 km SE of Hansville, Washington · 15980 days ago · 20 km deep · 36 km away
  2. 2.28 km NW of Belfair, Washington · 15979 days ago · 9 km deep · 16 km away
  3. 1.86 km NNE of Lofall, Washington · 15978 days ago · 17 km deep · 31 km away
  4. 2.06 km S of Seabeck, Washington · 15978 days ago · 21 km deep · 7 km away
  5. 2.19 km WSW of Belfair, Washington · 15974 days ago · -1 km deep · 24 km away
  6. 2.33 km SW of Chico, Washington · 15973 days ago · 12 km deep · 0 km away
  7. 2.210 km ESE of Ravensdale, Washington · 15973 days ago · 8 km deep · 74 km away
  8. 2.94 km SE of Bangor Trident Base, Washington · 15972 days ago · 19 km deep · 12 km away
  9. 1.68 km NE of Fall City, Washington · 15972 days ago · 13 km deep · 70 km away
  10. 2.011 km NNE of Snoqualmie, Washington · 15972 days ago · 13 km deep · 76 km away
  11. 1.69 km ENE of Fall City, Washington · 15972 days ago · 13 km deep · 72 km away
  12. 2.42 km S of Buckley, Washington · 15970 days ago · 13 km deep · 74 km away
  13. 1.70 km WNW of Wauna, Washington · 15968 days ago · 19 km deep · 25 km away
  14. 2.00 km NE of Normandy Park, Washington · 15967 days ago · 16 km deep · 35 km away
  15. 2.62 km N of Skokomish, Washington · 15965 days ago · -1 km deep · 41 km away
  16. 1.96 km SSW of Hansville, Washington · 15961 days ago · 19 km deep · 32 km away
  17. 2.61 km ESE of Port Townsend, Washington · 15959 days ago · 18 km deep · 57 km away
  18. 2.01 km NE of Maple Valley, Washington · 15959 days ago · 21 km deep · 58 km away
  19. 1.91 km NW of Redmond, Washington · 15958 days ago · 10 km deep · 46 km away
  20. 2.01 km NW of Redmond, Washington · 15958 days ago · 8 km deep · 47 km away
  21. 2.26 km ENE of Lake Marcel-Stillwater, Washington · 15957 days ago · 18 km deep · 69 km away
  22. 1.610 km NNW of Belfair, Washington · 15955 days ago · 8 km deep · 11 km away
  23. 1.64 km S of Monroe, Washington · 15948 days ago · -1 km deep · 64 km away
  24. 3.06 km E of Carbonado, Washington · 15946 days ago · 6 km deep · 83 km away
  25. 1.55 km SW of Clinton, Washington · 15941 days ago · 26 km deep · 46 km away
  26. 1.70 km ENE of Clyde Hill, Washington · 15941 days ago · 24 km deep · 41 km away
  27. 1.96 km SSE of Wilderness Rim, Washington · 15940 days ago · 0 km deep · 80 km away
  28. 1.75 km ENE of Snoqualmie, Washington · 15940 days ago · 13 km deep · 74 km away
  29. 1.87 km E of Oak Harbor, Washington · 15939 days ago · 18 km deep · 79 km away
  30. 1.74 km S of Seattle, Washington · 15938 days ago · 17 km deep · 32 km away
  31. 1.64 km SSW of Des Moines, Washington · 15937 days ago · 13 km deep · 40 km away
  32. 2.09 km ESE of Carbonado, Washington · 15937 days ago · 2 km deep · 86 km away
  33. 1.51 km WSW of Echo Lake, Washington · 15934 days ago · 21 km deep · 55 km away
  34. 2.01 km SW of Port Orchard, Washington · 15933 days ago · 21 km deep · 10 km away
  35. 1.93 km ENE of Snoqualmie, Washington · 15930 days ago · 16 km deep · 72 km away
  36. 1.716 km NE of May Creek, Washington · 15928 days ago · 7 km deep · 100 km away
  37. 1.913 km WSW of Greenwater, Washington · 15927 days ago · 14 km deep · 88 km away
  38. 1.74 km W of Vashon, Washington · 15924 days ago · 50 km deep · 24 km away
  39. 1.53 km SSW of Puyallup, Washington · 15923 days ago · 21 km deep · 59 km away

Before

  1. 2.63 km WSW of Erlands Point-Kitsap Lake, Washington · 15981 days ago · 13 km deep · 1 km away
  2. 2.84 km N of Kingston, Washington · 15983 days ago · 23 km deep · 33 km away
  3. 2.413 km WSW of Greenwater, Washington · 15987 days ago · 14 km deep · 88 km away
  4. 2.35 km NW of Burley, Washington · 15990 days ago · 20 km deep · 17 km away
  5. 2.00 km NW of Port Orchard, Washington · 15991 days ago · 21 km deep · 10 km away
  6. 2.09 km WNW of La Conner, Washington · 15991 days ago · 57 km deep · 91 km away
  7. 2.23 km NW of Redmond, Washington · 15994 days ago · 11 km deep · 46 km away
  8. 2.21 km SSE of Kingsgate, Washington · 15994 days ago · 14 km deep · 45 km away
  9. 1.82 km NE of West Lake Sammamish, Washington · 15995 days ago · 8 km deep · 50 km away
  10. 2.68 km SE of Wilderness Rim, Washington · 16004 days ago · -1 km deep · 82 km away
  11. 2.37 km SE of Wilderness Rim, Washington · 16004 days ago · -1 km deep · 82 km away
  12. 1.64 km NW of McCleary, Washington · 16008 days ago · 40 km deep · 71 km away
  13. 1.62 km NW of Mountlake Terrace, Washington · 16011 days ago · 19 km deep · 39 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10147563. Read Mon, Sep 21, 2026, 7:56 PM UTC.