M1.5 earthquake 19 km E of Kelso, Washington
A magnitude 1.5 earthquake struck 19 km E of Kelso, Washington on Sat, May 30, 1987, 11:53 AM PDT (18:53 UTC), 13 km (8 mi) below the surface.
A larger quake followed: M2.1 37 km NNE of Amboy, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.5 (Md, duration), micro
- Magnitude from
- Pacific Northwest Seismic Network
- Local time
- UTC
- 1987-05-30 18:53:29 UTC
- Depth
- 13.5 km (8.4 mi), shallow
- Epicenter
- 46.150° N, 122.655° 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 0.4 km horizontally, 0.6 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 95°
- Stations used
- 25
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
- 2.022 km S of Morton, Washington · 14351 days ago · 10 km deep · 39 km away
- 1.58 km S of Pe Ell, Washington · 14349 days ago · 23 km deep · 63 km away
- 2.011 km ENE of Kalama, WA · 14342 days ago · 16 km deep · 12 km away
- 2.137 km NNE of Amboy, Washington · 14341 days ago · -2 km deep · 37 km away
- 1.838 km NNE of Amboy, Washington · 14337 days ago · -2 km deep · 36 km away
- 1.712 km S of Morton, Washington · 14317 days ago · 6 km deep · 45 km away
- 1.719 km E of Cannon Beach, Oregon · 14316 days ago · 22 km deep · 87 km away
Before
- 2.210 km E of Yacolt, Washington · 14375 days ago · 6 km deep · 43 km away
- 1.511 km ENE of East Cathlamet, Washington · 14376 days ago · 23 km deep · 45 km away
- 1.77 km ENE of Mossyrock, Washington · 14377 days ago · 22 km deep · 49 km away
- 2.33 km W of Brush Prairie, Washington · 14383 days ago · 20 km deep · 47 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10221793. Read Thu, Oct 1, 2026, 10:45 AM UTC.