Washington earthquakes

M1.7 earthquake 5 km N of Hamilton, Washington

A magnitude 1.7 earthquake struck 5 km N of Hamilton, Washington on Wed, Dec 19, 1984, 5:24 AM PST (13:24 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M2.2 0 km N of Woodway, Washington. This one was a foreshock.

Concrete 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
1984-12-19 13:24:47 UTC
Depth
13.3 km (8.3 mi), shallow
Epicenter
48.566° N, 121.981° 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 1.9 km horizontally, 3.2 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
117°
Stations used
9

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 11 in the 30 days before it.

After

  1. 2.20 km N of Woodway, Washington · 15252 days ago · 22 km deep · 90 km away
  2. 2.97 km NW of Concrete, Washington · 15249 days ago · 2 km deep · 13 km away
  3. 1.74 km NNW of Bryant, Washington · 15248 days ago · 12 km deep · 36 km away
  4. 2.17 km NW of Concrete, Washington · 15241 days ago · 1 km deep · 12 km away
  5. 1.97 km NW of Concrete, Washington · 15239 days ago · 1 km deep · 13 km away
  6. 2.58 km NNE of Lake Marcel-Stillwater, Washington · 15231 days ago · 0 km deep · 90 km away
  7. 3.38 km N of Quilcene, Washington · 15230 days ago · 21 km deep · 99 km away
  8. 2.48 km NNE of Lake Marcel-Stillwater, Washington · 15230 days ago · 1 km deep · 90 km away
  9. 1.76 km WNW of Orcas, Washington · 15222 days ago · 19 km deep · 77 km away
  10. 2.53 km E of Edison, Washington · 15221 days ago · 14 km deep · 30 km away
  11. 2.65 km SW of Woodway, Washington · 15218 days ago · 18 km deep · 95 km away
  12. 2.25 km SW of Woodway, Washington · 15218 days ago · 18 km deep · 96 km away
  13. 1.65 km E of Lake Bosworth, Washington · 15217 days ago · -1 km deep · 57 km away
  14. 2.34 km E of Edison, Washington · 15215 days ago · 14 km deep · 30 km away
  15. 1.75 km ENE of Big Lake, Washington · 15215 days ago · 8 km deep · 22 km away
  16. 1.93 km E of Granite Falls, Washington · 15215 days ago · -1 km deep · 53 km away
  17. 1.55 km S of Lake Roesiger, Washington · 15209 days ago · -1 km deep · 71 km away
  18. 1.78 km ENE of Ferndale, Washington · 15209 days ago · 12 km deep · 49 km away
  19. 1.60 km WNW of Everett, Washington · 15208 days ago · 18 km deep · 67 km away
  20. 1.77 km NE of Quilcene, Washington · 15208 days ago · 46 km deep · 98 km away
  21. 1.76 km WSW of Lake Cavanaugh, Washington · 15207 days ago · 12 km deep · 30 km away
  22. 1.96 km WSW of Lake Cavanaugh, Washington · 15207 days ago · 12 km deep · 30 km away
  23. 1.93 km WSW of Lake Marcel-Stillwater, Washington · 15202 days ago · 10 km deep · 98 km away

Before

  1. 1.66 km NNW of Concrete, Washington · 15253 days ago · 4 km deep · 14 km away
  2. 2.043 km WNW of Winthrop, Washington · 15254 days ago · -1 km deep · 97 km away
  3. 1.82 km SE of Shoreline, Washington · 15255 days ago · 18 km deep · 95 km away
  4. 1.65 km NNW of Concrete, Washington · 15257 days ago · 3 km deep · 15 km away
  5. 1.96 km NW of Concrete, Washington · 15261 days ago · 1 km deep · 13 km away
  6. 3.27 km NW of Concrete, Washington · 15269 days ago · -1 km deep · 13 km away
  7. 3.17 km NW of Concrete, Washington · 15270 days ago · -1 km deep · 13 km away
  8. 2.72 km E of Kirkland, Washington · 15272 days ago · 23 km deep · 99 km away
  9. 1.59 km NW of Orcas, Washington · 15281 days ago · 20 km deep · 77 km away
  10. 2.31 km ENE of Hamilton, Washington · 15282 days ago · -1 km deep · 5 km away
  11. 2.01 km N of Woods Creek, Washington · 15283 days ago · 16 km deep · 75 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10183328. Read Wed, Sep 23, 2026, 2:07 PM UTC.