Washington earthquakes

M1.5 earthquake 4 km WSW of Chico, Washington

A magnitude 1.5 earthquake struck 4 km WSW of Chico, Washington on Sun, Apr 26, 1981, 9:41 PM PDT (04:41 UTC), 12 km (8 mi) below the surface.

A larger quake followed: M2.1 4 km WSW of Chico, 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
1.5 (md), micro
Local time
UTC
1981-04-27 04:41:56 UTC
Depth
12.1 km (7.5 mi), shallow
Epicenter
47.599° N, 122.763° 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 0.1 km horizontally, 0.1 km in depth
Magnitude uncertainty
±0.14
Depth from
Operator assigned
Station coverage gap
88°
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: 23 in the 60 days after this one and 15 in the 30 days before it.

After

  1. 2.14 km WSW of Chico, Washington · 16584 days ago · 13 km deep · 1 km away
  2. 1.6Puget Sound region, Washington · 16582 days ago · 17 km deep · 36 km away
  3. 1.712 km ESE of Carbonado, Washington · 16576 days ago · 16 km deep · 90 km away
  4. 1.52 km SW of Roosevelt, Washington · 16576 days ago · 25 km deep · 62 km away
  5. 1.81 km SE of Enetai, Washington · 16571 days ago · 32 km deep · 13 km away
  6. 2.413 km WSW of Ault Field, Washington · 16568 days ago · 29 km deep · 77 km away
  7. 2.06 km NNE of Port Townsend, Washington · 16566 days ago · 21 km deep · 63 km away
  8. 2.40 km W of Mountlake Terrace, Washington · 16564 days ago · 23 km deep · 40 km away
  9. 1.71 km SE of Redmond, Washington · 16561 days ago · 11 km deep · 49 km away
  10. 1.611 km NE of Snoqualmie, Washington · 16558 days ago · 2 km deep · 78 km away
  11. 1.67 km ENE of Snoqualmie, Washington · 16555 days ago · 9 km deep · 77 km away
  12. 2.56 km NNW of Bangor Trident Base, Washington · 16547 days ago · 21 km deep · 20 km away
  13. 1.53 km ENE of Union Hill-Novelty Hill, Washington · 16546 days ago · -1 km deep · 59 km away
  14. 1.9Washington · 16546 days ago · -1 km deep · 59 km away
  15. 2.412 km ESE of Riverbend, Washington · 16543 days ago · 13 km deep · 90 km away
  16. 2.37 km ENE of Quilcene, Washington · 16540 days ago · 52 km deep · 27 km away
  17. 1.63 km ENE of Union Hill-Novelty Hill, Washington · 16531 days ago · -1 km deep · 59 km away
  18. 1.62 km ENE of Union Hill-Novelty Hill, Washington · 16531 days ago · -1 km deep · 58 km away
  19. 1.62 km ENE of Union Hill-Novelty Hill, Washington · 16531 days ago · -1 km deep · 58 km away
  20. 1.60 km NW of Normandy Park, Washington · 16526 days ago · 18 km deep · 36 km away
  21. 1.70 km W of Normandy Park, Washington · 16526 days ago · 17 km deep · 36 km away
  22. 1.70 km W of Normandy Park, Washington · 16526 days ago · 17 km deep · 36 km away
  23. 1.55 km NE of Port Townsend, Washington · 16524 days ago · 26 km deep · 61 km away

Before

  1. 1.77 km NNW of Kingston, Washington · 16586 days ago · 29 km deep · 32 km away
  2. 2.42 km SSE of Maple Heights-Lake Desire, Washington · 16591 days ago · 17 km deep · 55 km away
  3. 1.916 km NNE of May Creek, Washington · 16596 days ago · 7 km deep · 100 km away
  4. 2.54 km SSW of Gorst, Washington · 16599 days ago · 24 km deep · 13 km away
  5. 1.77 km NE of Hoodsport, Washington · 16602 days ago · 4 km deep · 28 km away
  6. 2.57 km NE of Hoodsport, Washington · 16602 days ago · -1 km deep · 28 km away
  7. 1.811 km NNE of Snoqualmie, Washington · 16603 days ago · 13 km deep · 75 km away
  8. 1.97 km ENE of Snoqualmie, Washington · 16606 days ago · 9 km deep · 77 km away
  9. 2.07 km ENE of Snoqualmie, Washington · 16606 days ago · 8 km deep · 77 km away
  10. 1.53 km SE of Echo Lake, Washington · 16607 days ago · 16 km deep · 59 km away
  11. 2.74 km WNW of Wauna, Washington · 16608 days ago · 23 km deep · 23 km away
  12. 2.07 km NNE of Hoodsport, Washington · 16609 days ago · 7 km deep · 28 km away
  13. 2.57 km NE of Hoodsport, Washington · 16609 days ago · -1 km deep · 28 km away
  14. 2.24 km S of Coupeville, Washington · 16610 days ago · 25 km deep · 65 km away
  15. 2.02 km WNW of Belfair, Washington · 16611 days ago · 1 km deep · 17 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10107483. Read Mon, Sep 21, 2026, 9:46 PM UTC.