Washington earthquakes

M1.5 earthquake 4 km NW of Black Diamond, Washington

A magnitude 1.5 earthquake struck 4 km NW of Black Diamond, Washington on Sat, Dec 17, 1977, 11:37 PM PST (07:37 UTC), 12 km (7 mi) below the surface.

A larger quake followed: M1.6 3 km W of Chico, Washington. This one was a foreshock.

Black Diamond 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
1977-12-18 07:37:22 UTC
Depth
11.8 km (7.3 mi), shallow
Epicenter
47.336° N, 122.044° 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 1.7 km horizontally, 3.8 km in depth
Depth from
From location
Station coverage gap
169°
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: 22 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.54 km ESE of Indianola, Washington · 17810 days ago · 15 km deep · 55 km away
  2. 1.63 km W of Chico, Washington · 17809 days ago · 19 km deep · 62 km away
  3. 1.94 km NNE of Woods Creek, Washington · 17806 days ago · 12 km deep · 66 km away
  4. 1.60 km N of Southworth, Washington · 17805 days ago · 18 km deep · 40 km away
  5. 2.118 km N of Index, Washington · 17801 days ago · 5 km deep · 83 km away
  6. 1.718 km N of Index, Washington · 17801 days ago · 5 km deep · 82 km away
  7. 1.719 km N of Index, Washington · 17801 days ago · 8 km deep · 83 km away
  8. 1.817 km NE of May Creek, Washington · 17801 days ago · 8 km deep · 82 km away
  9. 2.09 km ENE of Carnation, Washington · 17801 days ago · 16 km deep · 42 km away
  10. 1.62 km NW of Maple Valley, Washington · 17798 days ago · 17 km deep · 8 km away
  11. 1.95 km SE of Monroe, Washington · 17797 days ago · 9 km deep · 54 km away
  12. 2.420 km NNW of Hoodsport, Washington · 17792 days ago · 42 km deep · 94 km away
  13. 2.02 km SE of Bangor Trident Base, Washington · 17786 days ago · 48 km deep · 64 km away
  14. 1.71 km NNE of Cathcart, Washington · 17778 days ago · 17 km deep · 59 km away
  15. 2.36 km NNE of Lofall, Washington · 17771 days ago · 19 km deep · 73 km away
  16. 2.010 km SSW of Shelton, Washington · 17771 days ago · 47 km deep · 87 km away
  17. 1.53 km WSW of Wilderness Rim, Washington · 17770 days ago · 19 km deep · 21 km away
  18. 1.68 km SSE of Mineral, Washington · 17765 days ago · 3 km deep · 78 km away
  19. 1.64 km SSW of Orting, Washington · 17763 days ago · -1 km deep · 33 km away
  20. 1.95 km SE of Klahanie, Washington · 17761 days ago · 19 km deep · 23 km away
  21. 2.08 km WNW of Gorst, Washington · 17757 days ago · 21 km deep · 62 km away
  22. 1.78 km S of Swede Heaven, Washington · 17755 days ago · 8 km deep · 100 km away

Before

  1. 1.63 km W of Suquamish, Washington · 17814 days ago · 24 km deep · 60 km away
  2. 2.11 km WNW of Indianola, Washington · 17819 days ago · 18 km deep · 60 km away
  3. 1.70 km NNW of Clyde Hill, Washington · 17821 days ago · 21 km deep · 36 km away
  4. 1.821 km SE of Carbonado, Washington · 17827 days ago · 17 km deep · 45 km away
  5. 2.118 km WSW of Nile, Washington · 17828 days ago · 1 km deep · 95 km away
  6. 2.124 km N of Packwood, Washington · 17830 days ago · 5 km deep · 63 km away
  7. 1.91 km NE of Maple Heights-Lake Desire, Washington · 17833 days ago · 16 km deep · 13 km away
  8. 2.17 km SE of Mossyrock, Washington · 17838 days ago · 16 km deep · 99 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10845368. Read Tue, Sep 22, 2026, 12:18 PM UTC.