M1.6 earthquake 5 km NW of Waterville, Washington
A magnitude 1.6 earthquake struck 5 km NW of Waterville, Washington on Mon, Aug 22, 1988, 6:00 PM PDT (01:00 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M2.1 15 km NE of Marlin, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.6 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1988-08-23 01:00:35 UTC
- Depth
- 4.9 km (3.1 mi), shallow
- Epicenter
- 47.678° N, 120.127° 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 2.2 km horizontally, 6.7 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 98°
- 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: 7 in the 60 days after this one and 4 in the 30 days before it.
After
- 1.6Washington · 13917 days ago · 5 km deep · 8 km away
- 2.115 km NE of Marlin, Washington · 13905 days ago · 2 km deep · 98 km away
- 2.16 km ENE of Entiat, Washington · 13901 days ago · 5 km deep · 2 km away
- 1.79 km SW of Chelan Falls, Washington · 13895 days ago · 6 km deep · 9 km away
- 1.610 km NW of Entiat, Washington · 13881 days ago · -1 km deep · 15 km away
- 1.78 km WSW of Chelan Falls, Washington · 13879 days ago · 6 km deep · 10 km away
- 1.63 km S of Entiat, Washington · 13872 days ago · 4 km deep · 6 km away
Before
- 1.928 km NNW of Leavenworth, Washington · 13936 days ago · -1 km deep · 54 km away
- 2.210 km SSE of Skykomish, Washington · 13941 days ago · 0 km deep · 87 km away
- 1.67 km SSW of Chelan Falls, Washington · 13944 days ago · -1 km deep · 10 km away
- 3.20 km NW of Waterville, Washington · 13945 days ago · -1 km deep · 5 km away
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10237033. Read Sun, Oct 4, 2026, 2:53 PM UTC.