M1.6 earthquake 6 km ESE of Hockinson, Washington
A magnitude 1.6 earthquake struck 6 km ESE of Hockinson, Washington on Sun, Feb 15, 1987, 12:51 AM PST (08:51 UTC), 8 km (5 mi) below the surface.
A larger quake followed: M2.0 4 km SSW of Morton, 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), micro
- Local time
- UTC
- 1987-02-15 08:51:11 UTC
- Depth
- 7.5 km (4.7 mi), shallow
- Epicenter
- 45.707° N, 122.412° 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 1.5 km horizontally, 1.3 km in depth
- Magnitude uncertainty
- ±0.11
- Depth from
- Operator assigned
- Station coverage gap
- 185°, poorly surrounded by stations
- Stations used
- 23
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 3 in the 60 days after this one and 2 in the 30 days before it.
After
- 2.04 km SSW of Morton, Washington · 14454 days ago · 16 km deep · 91 km away
- 1.924 km ENE of Yacolt, Washington · 14436 days ago · 3 km deep · 35 km away
- 1.910 km NNW of Klickitat, Washington · 14428 days ago · 5 km deep · 94 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10216013. Read Tue, Sep 22, 2026, 8:46 PM UTC.