M2.2 earthquake 7 km ESE of Riverbend, Washington
A magnitude 2.2 earthquake struck 7 km ESE of Riverbend, Washington on Mon, Feb 8, 1971, 3:12 PM PST (23:12 UTC), 18 km (11 mi) below the surface.
A larger quake followed: M2.4 3 km ESE of Key Center, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.2 (md), micro
- Local time
- UTC
- 1971-02-08 23:12:04 UTC
- Depth
- 18.0 km (11.2 mi), shallow
- Epicenter
- 47.440° N, 121.666° 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 2.8 km horizontally, 1.6 km in depth
- Magnitude uncertainty
- ±0.05
- Depth from
- From location
- Station coverage gap
- 245°, 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: 10 in the 60 days after this one and 5 in the 30 days before it.
After
- 2.23 km NNW of Cottage Lake, Washington · 20302 days ago · 8 km deep · 49 km away
- 1.811 km E of Ravensdale, Washington · 20300 days ago · 67 km deep · 16 km away
- 2.43 km ESE of Key Center, Washington · 20289 days ago · 23 km deep · 79 km away
- 2.31 km E of Silverdale, Washington · 20280 days ago · 8 km deep · 79 km away
- 2.13 km NE of Dash Point, Washington · 20279 days ago · 11 km deep · 56 km away
- 1.812 km ENE of Enumclaw, Washington · 20270 days ago · 22 km deep · 26 km away
- 2.70 km WNW of Burley, Washington · 20264 days ago · 41 km deep · 73 km away
- 3.27 km SSW of Brinnon, Washington · 20261 days ago · 14 km deep · 97 km away
- 2.325 km WSW of Nile, Washington · 20259 days ago · 29 km deep · 86 km away
- 2.10 km SSW of Woodinville, Washington · 20257 days ago · 21 km deep · 51 km away
Before
- 3.06 km WNW of Allyn, Washington · 20315 days ago · 40 km deep · 93 km away
- 2.33 km E of Union Hill-Novelty Hill, Washington · 20318 days ago · 11 km deep · 35 km away
- 2.00 km SSE of Clyde Hill, Washington · 20318 days ago · 24 km deep · 46 km away
- 1.79 km N of Belfair, Washington · 20342 days ago · 21 km deep · 89 km away
- 2.35 km NE of Kingston, Washington · 20342 days ago · 13 km deep · 74 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10838473. Read Tue, Sep 22, 2026, 9:16 AM UTC.