Washington earthquakes

M1.6 earthquake 3 km W of Chico, Washington

A magnitude 1.6 earthquake struck 3 km W of Chico, Washington on Mon, Dec 19, 1977, 6:29 AM PST (14:29 UTC), 19 km (12 mi) below the surface.

A larger quake followed: M1.9 4 km NNE of Woods Creek, 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
1.6 (md), micro
Local time
UTC
1977-12-19 14:29:47 UTC
Depth
18.9 km (11.8 mi), shallow
Epicenter
47.617° N, 122.762° 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 0.6 km horizontally, 0.7 km in depth
Depth from
From location
Station coverage gap
107°
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: 19 in the 60 days after this one and 7 in the 30 days before it.

After

  1. 1.94 km NNE of Woods Creek, Washington · 17806 days ago · 12 km deep · 74 km away
  2. 1.60 km N of Southworth, Washington · 17805 days ago · 18 km deep · 22 km away
  3. 2.26 km SSE of Port Angeles East, Washington · 17802 days ago · 44 km deep · 64 km away
  4. 2.09 km ENE of Carnation, Washington · 17801 days ago · 16 km deep · 73 km away
  5. 1.518 km S of Friday Harbor, Washington · 17801 days ago · 0 km deep · 85 km away
  6. 1.62 km NW of Maple Valley, Washington · 17799 days ago · 17 km deep · 57 km away
  7. 1.95 km SE of Monroe, Washington · 17798 days ago · 9 km deep · 67 km away
  8. 2.420 km NNW of Hoodsport, Washington · 17792 days ago · 42 km deep · 36 km away
  9. 2.02 km SE of Bangor Trident Base, Washington · 17786 days ago · 48 km deep · 12 km away
  10. 1.71 km NNE of Cathcart, Washington · 17778 days ago · 17 km deep · 57 km away
  11. 2.36 km NNE of Lofall, Washington · 17772 days ago · 19 km deep · 29 km away
  12. 2.010 km SSW of Shelton, Washington · 17771 days ago · 47 km deep · 62 km away
  13. 1.53 km WSW of Wilderness Rim, Washington · 17770 days ago · 19 km deep · 74 km away
  14. 2.810 km WSW of Amanda Park, Washington · 17768 days ago · 38 km deep · 98 km away
  15. 1.64 km SSW of Orting, Washington · 17763 days ago · -1 km deep · 74 km away
  16. 1.95 km SE of Klahanie, Washington · 17761 days ago · 19 km deep · 61 km away
  17. 2.08 km WNW of Gorst, Washington · 17757 days ago · 21 km deep · 8 km away
  18. 3.127 km W of Quilcene, Washington · 17756 days ago · 41 km deep · 42 km away
  19. 2.24 km SSW of La Conner, Washington · 17754 days ago · 17 km deep · 83 km away

Before

  1. 1.54 km ESE of Indianola, Washington · 17810 days ago · 15 km deep · 26 km away
  2. 1.54 km NW of Black Diamond, Washington · 17810 days ago · 12 km deep · 62 km away
  3. 1.63 km W of Suquamish, Washington · 17814 days ago · 24 km deep · 18 km away
  4. 1.87 km NNE of Bryant, Washington · 17816 days ago · 2 km deep · 90 km away
  5. 2.11 km WNW of Indianola, Washington · 17819 days ago · 18 km deep · 22 km away
  6. 1.70 km NNW of Clyde Hill, Washington · 17821 days ago · 21 km deep · 41 km away
  7. 1.91 km NE of Maple Heights-Lake Desire, Washington · 17833 days ago · 16 km deep · 54 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10845378. Read Tue, Sep 22, 2026, 5:23 PM UTC.