Washington earthquakes

M2.3 earthquake 5 km WNW of Connell, Washington

A magnitude 2.3 earthquake struck 5 km WNW of Connell, Washington on Sat, Oct 11, 1975, 6:15 AM PDT (13:15 UTC), 11 km (7 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
2.3 (md), micro
Local time
UTC
1975-10-11 13:15:56 UTC
Depth
11.3 km (7.0 mi), shallow
Epicenter
46.688° N, 118.923° 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 1.2 km horizontally, 1.7 km in depth
Magnitude uncertainty
±0.10
Depth from
From location
Station coverage gap
191°, poorly surrounded by stations
Stations used
10

Nearest places

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

Nearby

Within 100 km, magnitude 1.5 and up: 12 in the 60 days after this one and 3 in the 30 days before it.

After

  1. 1.714 km NNE of West Richland, Washington · 18613 days ago · 0 km deep · 40 km away
  2. 2.24 km WNW of Connell, Washington · 18611 days ago · 12 km deep · 1 km away
  3. 2.43 km NNW of Connell, Washington · 18611 days ago · 5 km deep · 3 km away
  4. 1.94 km NW of Connell, Washington · 18600 days ago · 4 km deep · 2 km away
  5. 1.615 km SE of Desert Aire, Washington · 18594 days ago · 20 km deep · 68 km away
  6. 1.619 km NNW of Irrigon, Oregon · 18591 days ago · 18 km deep · 85 km away
  7. 1.914 km NNE of West Richland, Washington · 18590 days ago · 0 km deep · 40 km away
  8. 2.915 km WNW of Othello, Washington · 18589 days ago · 3 km deep · 40 km away
  9. 1.814 km NNE of West Richland, Washington · 18580 days ago · 0 km deep · 40 km away
  10. 1.94 km SSE of Vantage, Washington · 18569 days ago · 6 km deep · 82 km away
  11. 1.914 km NNE of West Richland, Washington · 18566 days ago · 0 km deep · 40 km away
  12. 1.94 km ESE of Vantage, Washington · 18557 days ago · 3 km deep · 81 km away

Before

  1. 2.26 km NW of Connell, Washington · 18615 days ago · 10 km deep · 2 km away
  2. 1.98 km NW of Connell, Washington · 18631 days ago · 7 km deep · 4 km away
  3. 1.94 km N of Connell, Washington · 18640 days ago · 5 km deep · 5 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10861988. Read Mon, Sep 28, 2026, 4:58 PM UTC.