M1.7 earthquake 3 km WSW of Chelan, Washington
A magnitude 1.7 earthquake struck 3 km WSW of Chelan, Washington on Sat, May 16, 1987, 11:35 PM PDT (06:35 UTC), -1 km (0 mi) below the surface.
A larger quake followed: M1.9 32 km NNW of Leavenworth, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.7 (md), micro
- Local time
- UTC
- 1987-05-17 06:35:59 UTC
- Depth
- -0.6 km (-0.4 mi), shallow
- Epicenter
- 47.830° N, 120.056° 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 1.1 km horizontally
- Magnitude uncertainty
- ±0.10
- Depth from
- From location
- Station coverage gap
- 103°
- Stations used
- 12
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 1.513 km ESE of Twisp, Washington · 14367 days ago · 2 km deep · 53 km away
- 1.71 km WSW of Entiat, Washington · 14349 days ago · -1 km deep · 22 km away
- 1.932 km NNW of Leavenworth, Washington · 14344 days ago · 0 km deep · 55 km away
- 1.64 km NW of Entiat, Washington · 14343 days ago · 0 km deep · 19 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10220138. Read Wed, Sep 23, 2026, 4:43 PM UTC.