M2.8 earthquake 21 km ENE of Amanda Park, Washington
A magnitude 2.8 earthquake struck 21 km ENE of Amanda Park, Washington on Fri, Aug 21, 1981, 1:13 PM PDT (20:13 UTC), 40 km (25 mi) below the surface.
A larger quake followed: M3.3 3 km WNW of South Bend, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.8 (md), micro
- Local time
- UTC
- 1981-08-21 20:13:13 UTC
- Depth
- 39.9 km (24.8 mi), shallow
- Epicenter
- 47.562° N, 123.653° 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 0.8 km horizontally, 0.8 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 51°
- Stations used
- 27
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 3 in the 30 days before it.
After
- 2.12 km WNW of Home, Washington · 16463 days ago · 22 km deep · 72 km away
- 3.33 km WNW of South Bend, Washington · 16452 days ago · 37 km deep · 99 km away
- 2.44 km WSW of Chico, Washington · 16448 days ago · 13 km deep · 67 km away
- 1.82 km ENE of Indianola, Washington · 16425 days ago · 22 km deep · 90 km away
- 1.72 km SSE of Maplewood, Washington · 16422 days ago · 19 km deep · 86 km away
- 1.85 km NW of South Bend, Washington · 16409 days ago · 33 km deep · 97 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10130908. Read Tue, Sep 22, 2026, 3:08 PM UTC.