M3.7 earthquake 21 km W of Grayland, Washington
A magnitude 3.7 earthquake struck 21 km W of Grayland, Washington on Thu, Jun 18, 1987, 10:47 PM PDT (05:47 UTC), 37 km (23 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.7 (md), minor
- Local time
- UTC
- 1987-06-19 05:47:41 UTC
- Depth
- 36.9 km (22.9 mi), shallow
- Epicenter
- 46.793° N, 124.378° 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, 0.6 km in depth
- Magnitude uncertainty
- ±0.33
- Depth from
- From location
- Station coverage gap
- 223°, poorly surrounded by stations
- Stations used
- 39
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 1 in the 60 days after this one and 0 in the 30 days before it.
After
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10221093 (also filed as usp00035ws). Read Tue, Sep 22, 2026, 10:21 AM UTC.