Washington earthquakes

M1.7 earthquake 9 km WSW of Chelan Falls, Washington

A magnitude 1.7 earthquake struck 9 km WSW of Chelan Falls, Washington on Wed, Jul 21, 2004, 3:12 PM PDT (22:12 UTC), -1 km (-1 mi) below the surface.

A larger quake followed: M2.9 16 km WSW of Conconully, Washington. This one was a foreshock.

Chelan 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, duration), micro
Magnitude from
Pacific Northwest Seismic Network
Local time
UTC
2004-07-21 22:12:59 UTC
Depth
-1.2 km (-0.7 mi), shallow
Epicenter
47.760° N, 120.102° 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, 0.3 km in depth
Magnitude uncertainty
±0.04
Depth from
Operator assigned
Station coverage gap
69°
Stations used
12

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 13 in the 60 days after this one and 1 in the 30 days before it.

After

  1. 1.79 km NW of Entiat, Washington · 8103 days ago · -1 km deep · 16 km away
  2. 1.87 km NE of Winthrop, Washington · 8100 days ago · 0 km deep · 86 km away
  3. 1.59 km NNW of Entiat, Washington · 8095 days ago · -1 km deep · 12 km away
  4. 1.71 km NW of Vantage, Washington · 8093 days ago · 2 km deep · 90 km away
  5. 2.016 km WSW of Electric City, Washington · 8088 days ago · 0 km deep · 66 km away
  6. 2.3Washington · 8085 days ago · 0 km deep · 66 km away
  7. 1.912 km SSE of Pateros, Washington · 8071 days ago · 0 km deep · 27 km away
  8. 2.916 km WSW of Conconully, Washington · 8070 days ago · -1 km deep · 83 km away
  9. 1.74 km SE of Entiat, Washington · 8070 days ago · 4 km deep · 13 km away
  10. 1.98 km WSW of Chelan Falls, Washington · 8068 days ago · -1 km deep · 2 km away
  11. 1.51 km N of Vantage, Washington · 8068 days ago · 2 km deep · 90 km away
  12. 1.816 km WSW of Electric City, Washington · 8056 days ago · 0 km deep · 66 km away
  13. 2.40 km N of Entiat, Washington · 8051 days ago · 3 km deep · 12 km away

Before

  1. 1.61 km WSW of Entiat, Washington · 8115 days ago · 3 km deep · 14 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10613818. Read Fri, Oct 2, 2026, 10:54 PM UTC.