M3.4 earthquake 7 km NNE of Mossyrock, Washington
A magnitude 3.4 earthquake struck 7 km NNE of Mossyrock, Washington on Fri, May 28, 1971, 3:42 AM PDT (10:42 UTC), 15 km (9 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.4 (md), minor
- Local time
- UTC
- 1971-05-28 10:42:07 UTC
- Depth
- 14.6 km (9.1 mi), shallow
- Epicenter
- 46.590° N, 122.432° 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 2.1 km horizontally, 37.9 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- Operator assigned
- Station coverage gap
- 238°, 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: 8 in the 60 days after this one and 2 in the 30 days before it.
After
- 2.15 km SSW of Morton, Washington · 20206 days ago · 22 km deep · 12 km away
- 2.40 km NE of Lakeland South, Washington · 20198 days ago · 18 km deep · 78 km away
- 2.77 km SW of Alder, Washington · 20191 days ago · 2 km deep · 19 km away
- 2.117 km SSW of Greenwater, Washington · 20191 days ago · 21 km deep · 70 km away
- 1.79 km NNW of Mossyrock, Washington · 20187 days ago · 45 km deep · 7 km away
- 1.87 km WNW of Allyn, Washington · 20181 days ago · 19 km deep · 98 km away
- 2.334 km SSE of Morton, Washington · 20177 days ago · 13 km deep · 44 km away
- 2.43 km NE of Ashford, Washington · 20160 days ago · 6 km deep · 39 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10839063. Read Tue, Sep 22, 2026, 4:51 PM UTC.