M1.5 earthquake 1 km SSE of Wapato, Washington
A magnitude 1.5 earthquake struck 1 km SSE of Wapato, Washington on Sun, Oct 10, 1971, 9:53 PM PDT (04:53 UTC), 18 km (11 mi) below the surface.
A larger quake followed: M3.8 22 km SSE of Royal City, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.5 (md), micro
- Local time
- UTC
- 1971-10-11 04:53:28 UTC
- Depth
- 18.0 km (11.2 mi), shallow
- Epicenter
- 46.435° N, 120.416° 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 0.9 km horizontally, 1.5 km in depth
- Magnitude uncertainty
- ±0.46
- Depth from
- From location
- Station coverage gap
- 295°, poorly surrounded by stations
- 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: 9 in the 60 days after this one and 5 in the 30 days before it.
After
- 1.53 km SE of Wapato, Washington · 20072 days ago · 8 km deep · 3 km away
- 2.025 km WNW of Bickleton, Washington · 20069 days ago · 27 km deep · 41 km away
- 3.822 km SSE of Royal City, Washington · 20058 days ago · 4 km deep · 73 km away
- 2.010 km NNW of Basin City, Washington · 20056 days ago · 0 km deep · 95 km away
- 1.919 km SW of Othello, Washington · 20040 days ago · 0 km deep · 85 km away
- 1.919 km SW of Othello, Washington · 20036 days ago · 0 km deep · 86 km away
- 1.520 km SW of Othello, Washington · 20035 days ago · 2 km deep · 85 km away
- 1.518 km SW of Othello, Washington · 20028 days ago · 0 km deep · 87 km away
- 1.718 km W of Othello, Washington · 20014 days ago · 2 km deep · 87 km away
Before
- 1.712 km NW of Basin City, Washington · 20082 days ago · 1 km deep · 93 km away
- 1.912 km NW of Basin City, Washington · 20087 days ago · 1 km deep · 94 km away
- 1.611 km NNW of Basin City, Washington · 20088 days ago · 2 km deep · 95 km away
- 1.512 km NNW of Basin City, Washington · 20092 days ago · 1 km deep · 94 km away
- 2.7Washington · 20092 days ago · 2 km deep · 95 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10839913. Read Thu, Sep 24, 2026, 2:10 PM UTC.