Washington earthquakes

M1.6 earthquake 11 km NNE of Mattawa, Washington

A magnitude 1.6 earthquake struck 11 km NNE of Mattawa, Washington on Tue, Feb 17, 1976, 11:54 AM PST (19:54 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.0 15 km S of Benton City, 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
1.6 (md), micro
Local time
UTC
1976-02-17 19:54:36 UTC
Depth
4.7 km (2.9 mi), shallow
Epicenter
46.836° N, 119.853° 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 0.8 km horizontally, 1.1 km in depth
Magnitude uncertainty
±0.08
Depth from
From location
Station coverage gap
159°
Stations used
7

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 11 in the 60 days after this one and 2 in the 30 days before it.

After

  1. 2.015 km S of Benton City, Washington · 18474 days ago · 2 km deep · 85 km away
  2. 2.05 km SSE of Vantage, Washington · 18470 days ago · 4 km deep · 10 km away
  3. 1.84 km ENE of Royal City, Washington · 18462 days ago · 16 km deep · 23 km away
  4. 1.619 km E of Desert Aire, Washington · 18454 days ago · 16 km deep · 24 km away
  5. 1.621 km E of Desert Aire, Washington · 18453 days ago · 3 km deep · 27 km away
  6. 1.616 km NNE of West Richland, Washington · 18452 days ago · 0 km deep · 64 km away
  7. 1.8Washington · 18447 days ago · 2 km deep · 64 km away
  8. 1.8Washington · 18446 days ago · 0 km deep · 27 km away
  9. 1.94 km E of Entiat, Washington · 18440 days ago · 8 km deep · 96 km away
  10. 1.621 km E of Desert Aire, Washington · 18439 days ago · 3 km deep · 26 km away
  11. 1.615 km S of Leavenworth, Washington · 18429 days ago · 5 km deep · 94 km away

Before

  1. 2.015 km S of Benton City, Washington · 18485 days ago · 2 km deep · 84 km away
  2. 2.116 km N of Richland, Washington · 18500 days ago · 2 km deep · 64 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10840708. Read Wed, Sep 23, 2026, 7:43 AM UTC.