M2.5 earthquake 4 km NW of Waterville, Washington
A magnitude 2.5 earthquake struck 4 km NW of Waterville, Washington on Sun, Apr 25, 1971, 9:38 PM PDT (04:38 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M3.3 8 km N of Almira, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.5 (md), micro
- Local time
- UTC
- 1971-04-26 04:38:18 UTC
- Depth
- 5.0 km (3.1 mi), shallow
- Epicenter
- 47.679° N, 120.112° 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 1.8 km horizontally, 4.2 km in depth
- Magnitude uncertainty
- ±0.20
- Depth from
- From location
- Station coverage gap
- 298°, poorly surrounded by stations
- Stations used
- 9
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 2 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10838953. Read Tue, Sep 22, 2026, 9:38 AM UTC.