Washington earthquakes

M1.7 earthquake 10 km NE of Hamilton, Washington

A magnitude 1.7 earthquake struck 10 km NE of Hamilton, Washington on Fri, Oct 26, 1984, 7:06 AM PDT (14:06 UTC), 14 km (9 mi) below the surface.

A larger quake followed: M2.1 1 km SE of Big Lake, 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
1984-10-26 14:06:38 UTC
Depth
14.4 km (8.9 mi), shallow
Epicenter
48.588° N, 121.894° 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 5.7 km horizontally, 18.9 km in depth
Magnitude uncertainty
±0.10
Depth from
Operator assigned
Station coverage gap
174°
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 9 in the 30 days before it.

After

  1. 2.11 km SE of Big Lake, Washington · 15306 days ago · 13 km deep · 33 km away
  2. 2.03 km S of Woodway, Washington · 15304 days ago · 18 km deep · 99 km away
  3. 1.54 km NE of Mukilteo, Washington · 15298 days ago · 2 km deep · 74 km away
  4. 1.710 km NNE of Hamilton, Washington · 15296 days ago · 12 km deep · 5 km away
  5. 1.93 km N of Bryant, Washington · 15294 days ago · 15 km deep · 40 km away
  6. 1.91 km E of Brier, Washington · 15292 days ago · 20 km deep · 93 km away
  7. 2.74 km NNW of Bryant, Washington · 15285 days ago · 14 km deep · 41 km away
  8. 1.73 km NE of Woods Creek, Washington · 15285 days ago · -1 km deep · 77 km away
  9. 2.01 km N of Woods Creek, Washington · 15282 days ago · 16 km deep · 77 km away
  10. 2.31 km ENE of Hamilton, Washington · 15281 days ago · -1 km deep · 9 km away
  11. 1.59 km NW of Orcas, Washington · 15280 days ago · 20 km deep · 83 km away
  12. 3.17 km NW of Concrete, Washington · 15269 days ago · -1 km deep · 6 km away
  13. 3.27 km NW of Concrete, Washington · 15268 days ago · -1 km deep · 6 km away
  14. 1.96 km NW of Concrete, Washington · 15260 days ago · 1 km deep · 6 km away
  15. 1.65 km NNW of Concrete, Washington · 15256 days ago · 3 km deep · 8 km away
  16. 1.82 km SE of Shoreline, Washington · 15254 days ago · 18 km deep · 99 km away
  17. 2.043 km WNW of Winthrop, Washington · 15253 days ago · -1 km deep · 90 km away
  18. 1.66 km NNW of Concrete, Washington · 15252 days ago · 4 km deep · 7 km away
  19. 1.75 km N of Hamilton, Washington · 15252 days ago · 13 km deep · 7 km away
  20. 2.20 km N of Woodway, Washington · 15251 days ago · 22 km deep · 95 km away
  21. 2.97 km NW of Concrete, Washington · 15248 days ago · 2 km deep · 6 km away
  22. 1.74 km NNW of Bryant, Washington · 15247 days ago · 12 km deep · 41 km away

Before

  1. 1.611 km ESE of Verlot, Washington · 15308 days ago · 3 km deep · 63 km away
  2. 2.52 km NNE of Esperance, Washington · 15321 days ago · 17 km deep · 93 km away
  3. 2.17 km ESE of Verlot, Washington · 15321 days ago · 0 km deep · 60 km away
  4. 2.33 km N of Bryant, Washington · 15322 days ago · 15 km deep · 40 km away
  5. 1.914 km SE of Verlot, Washington · 15323 days ago · 8 km deep · 67 km away
  6. 1.53 km ENE of Woods Creek, Washington · 15324 days ago · 5 km deep · 78 km away
  7. 1.53 km ESE of Woods Creek, Washington · 15329 days ago · 11 km deep · 80 km away
  8. 2.18 km E of Verlot, Washington · 15331 days ago · 2 km deep · 59 km away
  9. 1.71 km N of Bay View, Washington · 15336 days ago · 14 km deep · 44 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10184378. Read Tue, Sep 22, 2026, 8:26 PM UTC.