Washington earthquakes

M1.9 earthquake 4 km N of Connell, Washington

A magnitude 1.9 earthquake struck 4 km N of Connell, Washington on Tue, Sep 16, 1975, 7:02 PM PDT (02:02 UTC), 5 km (3 mi) below the surface.

A larger quake followed: M2.9 15 km WNW of Othello, Washington. This one was a foreshock.

Connell 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
1.9 (md), micro
Local time
UTC
1975-09-17 02:02:43 UTC
Depth
5.2 km (3.2 mi), shallow
Epicenter
46.703° N, 118.866° 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 1.1 km horizontally, 1.0 km in depth
Magnitude uncertainty
±0.11
Depth from
From location
Station coverage gap
216°, poorly surrounded by stations
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: 11 in the 60 days after this one and 9 in the 30 days before it.

After

  1. 1.98 km NW of Connell, Washington · 18630 days ago · 7 km deep · 5 km away
  2. 2.26 km NW of Connell, Washington · 18614 days ago · 10 km deep · 4 km away
  3. 2.35 km WNW of Connell, Washington · 18614 days ago · 11 km deep · 5 km away
  4. 1.714 km NNE of West Richland, Washington · 18612 days ago · 0 km deep · 44 km away
  5. 2.24 km WNW of Connell, Washington · 18610 days ago · 12 km deep · 4 km away
  6. 2.43 km NNW of Connell, Washington · 18610 days ago · 5 km deep · 2 km away
  7. 1.94 km NW of Connell, Washington · 18599 days ago · 4 km deep · 2 km away
  8. 1.615 km SE of Desert Aire, Washington · 18593 days ago · 20 km deep · 73 km away
  9. 1.619 km NNW of Irrigon, Oregon · 18590 days ago · 18 km deep · 89 km away
  10. 1.914 km NNE of West Richland, Washington · 18589 days ago · 0 km deep · 44 km away
  11. 2.915 km WNW of Othello, Washington · 18588 days ago · 3 km deep · 43 km away

Before

  1. 2.011 km SE of Prosser, Washington · 18647 days ago · 19 km deep · 88 km away
  2. 1.611 km SE of Prosser, Washington · 18648 days ago · 17 km deep · 89 km away
  3. 2.02 km SSW of Benton City, Washington · 18650 days ago · 0 km deep · 70 km away
  4. 1.715 km ESE of Desert Aire, Washington · 18656 days ago · 16 km deep · 66 km away
  5. 2.113 km SE of Desert Aire, Washington · 18656 days ago · 12 km deep · 70 km away
  6. 1.513 km SE of Desert Aire, Washington · 18657 days ago · 9 km deep · 70 km away
  7. 1.513 km SE of Desert Aire, Washington · 18657 days ago · 9 km deep · 70 km away
  8. 2.313 km SE of Desert Aire, Washington · 18657 days ago · 12 km deep · 71 km away
  9. 1.85 km E of Waitsburg, Washington · 18661 days ago · 0 km deep · 77 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10861788. Read Sun, Sep 27, 2026, 4:37 PM UTC.