Washington earthquakes

M1.7 earthquake 1 km NNE of Cathcart, Washington

A magnitude 1.7 earthquake struck 1 km NNE of Cathcart, Washington on Wed, Jan 18, 1978, 10:46 PM PST (06:46 UTC), 17 km (11 mi) below the surface.

A larger quake followed: M2.3 6 km NNE of Lofall, Washington. This one was a foreshock.

Cathcart 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
1.7 (md), micro
Local time
UTC
1978-01-19 06:46:36 UTC
Depth
17.1 km (10.7 mi), shallow
Epicenter
47.864° N, 122.094° 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
±0.08
Depth from
Operator assigned
Station coverage gap
196°, poorly surrounded by stations
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: 24 in the 60 days after this one and 13 in the 30 days before it.

After

  1. 2.36 km NNE of Lofall, Washington · 17771 days ago · 19 km deep · 40 km away
  2. 1.53 km WSW of Wilderness Rim, Washington · 17770 days ago · 19 km deep · 52 km away
  3. 1.64 km SSW of Orting, Washington · 17762 days ago · -1 km deep · 90 km away
  4. 1.95 km SE of Klahanie, Washington · 17760 days ago · 19 km deep · 38 km away
  5. 2.08 km WNW of Gorst, Washington · 17757 days ago · 21 km deep · 63 km away
  6. 3.127 km W of Quilcene, Washington · 17756 days ago · 41 km deep · 86 km away
  7. 1.78 km S of Swede Heaven, Washington · 17755 days ago · 8 km deep · 47 km away
  8. 2.24 km SSW of La Conner, Washington · 17754 days ago · 17 km deep · 63 km away
  9. 1.63 km NNE of Hobart, Washington · 17741 days ago · 0 km deep · 48 km away
  10. 2.1Puget Sound region, Washington · 17739 days ago · 19 km deep · 47 km away
  11. 2.10 km NNW of Woodway, Washington · 17739 days ago · 11 km deep · 23 km away
  12. 1.67 km NNE of May Creek, Washington · 17738 days ago · 9 km deep · 34 km away
  13. 1.51 km WNW of Freeland, Washington · 17736 days ago · 50 km deep · 38 km away
  14. 1.61 km WNW of Larch Way, Washington · 17735 days ago · 13 km deep · 13 km away
  15. 1.82 km SW of Suquamish, Washington · 17734 days ago · 17 km deep · 40 km away
  16. 3.54 km NE of Blyn, Washington · 17732 days ago · 53 km deep · 68 km away
  17. 1.58 km ENE of Marrowstone, Washington · 17732 days ago · 54 km deep · 44 km away
  18. 1.50 km E of Inglewood-Finn Hill, Washington · 17731 days ago · 9 km deep · 19 km away
  19. 4.85 km W of Burley, Washington · 17727 days ago · 22 km deep · 68 km away
  20. 1.53 km W of Burley, Washington · 17726 days ago · 22 km deep · 67 km away
  21. 1.85 km W of Burley, Washington · 17726 days ago · 22 km deep · 67 km away
  22. 2.25 km W of Burley, Washington · 17726 days ago · 21 km deep · 68 km away
  23. 1.74 km W of Burley, Washington · 17726 days ago · 21 km deep · 66 km away
  24. 1.54 km W of Burley, Washington · 17726 days ago · 25 km deep · 66 km away

Before

  1. 2.02 km SE of Bangor Trident Base, Washington · 17786 days ago · 48 km deep · 48 km away
  2. 2.420 km NNW of Hoodsport, Washington · 17792 days ago · 42 km deep · 92 km away
  3. 1.95 km SE of Monroe, Washington · 17797 days ago · 9 km deep · 14 km away
  4. 1.62 km NW of Maple Valley, Washington · 17798 days ago · 17 km deep · 51 km away
  5. 1.518 km S of Friday Harbor, Washington · 17800 days ago · 0 km deep · 87 km away
  6. 2.09 km ENE of Carnation, Washington · 17800 days ago · 16 km deep · 31 km away
  7. 1.817 km NE of May Creek, Washington · 17801 days ago · 8 km deep · 44 km away
  8. 1.719 km N of Index, Washington · 17801 days ago · 8 km deep · 46 km away
  9. 1.718 km N of Index, Washington · 17801 days ago · 5 km deep · 46 km away
  10. 2.118 km N of Index, Washington · 17801 days ago · 5 km deep · 46 km away
  11. 2.26 km SSE of Port Angeles East, Washington · 17801 days ago · 44 km deep · 94 km away
  12. 1.60 km N of Southworth, Washington · 17804 days ago · 18 km deep · 49 km away
  13. 1.94 km NNE of Woods Creek, Washington · 17805 days ago · 12 km deep · 17 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10845593. Read Tue, Sep 22, 2026, 4:53 AM UTC.