Washington earthquakes

M1.7 earthquake 22 km E of Mansfield, Washington

A magnitude 1.7 earthquake struck 22 km E of Mansfield, Washington on Sat, Nov 17, 1979, 12:55 AM PST (08:55 UTC), 0 km (0 mi) below the surface.

A larger quake followed: M2.6 9 km SW of Chelan Falls, Washington. This one was a foreshock.

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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
1979-11-17 08:55:52 UTC
Depth
0.2 km (0.1 mi), shallow
Epicenter
47.832° N, 119.336° 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 0.4 km horizontally
Magnitude uncertainty
±0.14
Depth from
From location
Station coverage gap
146°
Stations used
5

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 7 in the 60 days after this one and 8 in the 30 days before it.

After

  1. 1.56 km NE of Royal City, Washington · 17109 days ago · 0 km deep · 100 km away
  2. 1.615 km W of Entiat, Washington · 17099 days ago · 0 km deep · 83 km away
  3. 2.69 km SW of Chelan Falls, Washington · 17094 days ago · 6 km deep · 55 km away
  4. 1.99 km W of Entiat, Washington · 17082 days ago · -1 km deep · 77 km away
  5. 1.67 km SSE of Okanogan, Washington · 17080 days ago · 3 km deep · 55 km away
  6. 1.517 km ESE of Mansfield, Washington · 17076 days ago · 0 km deep · 10 km away
  7. 2.62 km NNE of Chelan, Washington · 17067 days ago · -1 km deep · 50 km away

Before

  1. 2.117 km ESE of Mansfield, Washington · 17111 days ago · 0 km deep · 10 km away
  2. 1.817 km ESE of Mansfield, Washington · 17117 days ago · 0 km deep · 9 km away
  3. 1.717 km ESE of Mansfield, Washington · 17117 days ago · 0 km deep · 9 km away
  4. 1.617 km ESE of Mansfield, Washington · 17118 days ago · 0 km deep · 9 km away
  5. 1.517 km ESE of Mansfield, Washington · 17118 days ago · 1 km deep · 9 km away
  6. 2.717 km ESE of Mansfield, Washington · 17118 days ago · -1 km deep · 9 km away
  7. 3.18 km N of Waterville, Washington · 17118 days ago · 3 km deep · 56 km away
  8. 1.66 km SE of Quincy, Washington · 17131 days ago · 0 km deep · 79 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10851188. Read Tue, Sep 22, 2026, 3:38 PM UTC.