M1.7 earthquake 3 km NNW of Connell, Washington
A magnitude 1.7 earthquake struck 3 km NNW of Connell, Washington on Wed, Apr 28, 1971, 7:34 AM PDT (14:34 UTC), 0 km (0 mi) below the surface.
A larger quake followed: M1.9 22 km E of Desert Aire, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.7 (md), micro
- Local time
- UTC
- 1971-04-28 14:34:39 UTC
- Depth
- -0.3 km (-0.2 mi), shallow
- Epicenter
- 46.693° N, 118.889° W
- Region
- Washington
- 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, 0.1 km in depth
- Magnitude uncertainty
- ±0.31
- Depth from
- Operator assigned
- Station coverage gap
- 237°, poorly surrounded by stations
- 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: 6 in the 60 days after this one and 8 in the 30 days before it.
After
- 1.711 km SSW of Benton City, Washington · 20235 days ago · 6 km deep · 78 km away
- 1.922 km E of Desert Aire, Washington · 20231 days ago · 6 km deep · 57 km away
- 1.913 km N of Pasco, Washington · 20223 days ago · 4 km deep · 40 km away
- 1.914 km N of Pasco, Washington · 20223 days ago · 5 km deep · 39 km away
- 2.23 km WNW of Connell, Washington · 20198 days ago · 0 km deep · 2 km away
- 2.23 km WSW of West Richland, Washington · 20183 days ago · 6 km deep · 59 km away
Before
- 1.816 km WNW of Othello, Washington · 20240 days ago · 3 km deep · 43 km away
- 1.53 km NW of Connell, Washington · 20251 days ago · 0 km deep · 1 km away
- 1.93 km NW of Connell, Washington · 20252 days ago · 2 km deep · 1 km away
- 2.33 km NW of Connell, Washington · 20252 days ago · 2 km deep · 1 km away
- 1.93 km NW of Connell, Washington · 20252 days ago · 1 km deep · 1 km away
- 1.814 km W of Othello, Washington · 20258 days ago · 0 km deep · 39 km away
- 1.611 km SSE of Royal City, Washington · 20259 days ago · 3 km deep · 52 km away
- 1.812 km SE of Royal City, Washington · 20260 days ago · 2 km deep · 50 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10838958. Read Tue, Sep 22, 2026, 9:10 AM UTC.