M2.1 earthquake 8 km S of Acme, Washington
A magnitude 2.1 earthquake struck 8 km S of Acme, Washington on Thu, Apr 7, 1977, 5:10 PM PST (01:10 UTC), 2 km (1 mi) below the surface.
A larger quake followed: M2.2 4 km E of Cathcart, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 2.1 (md), micro
- Local time
- UTC
- 1977-04-08 01:10:57 UTC
- Depth
- 2.0 km (1.3 mi), shallow
- Epicenter
- 48.638° N, 122.194° 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 1.3 km horizontally, 0.7 km in depth
- Magnitude uncertainty
- ±0.09
- Depth from
- From location
- Station coverage gap
- 193°, poorly surrounded by stations
- Stations used
- 5
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 3 in the 30 days before it.
After
- 2.03 km SSW of Lynden, Washington · 18046 days ago · 4 km deep · 37 km away
- 1.60 km W of Port Ludlow, Washington · 18044 days ago · -1 km deep · 87 km away
- 2.24 km E of Cathcart, Washington · 18025 days ago · 3 km deep · 88 km away
- 2.34 km NNW of Swede Heaven, Washington · 18020 days ago · 1 km deep · 48 km away
- 2.27 km NW of Kingston, Washington · 18013 days ago · 44 km deep · 92 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10843488. Read Tue, Sep 22, 2026, 4:01 PM UTC.