M1.6 earthquake 18 km NNW of Jamestown, Washington
A magnitude 1.6 earthquake struck 18 km NNW of Jamestown, Washington on Fri, Dec 25, 1987, 2:06 AM PST (10:06 UTC), 42 km (26 mi) below the surface.
A larger quake followed: M2.0 15 km NE of Saltair, Canada. 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
- 1987-12-25 10:06:29 UTC
- Depth
- 41.9 km (26.1 mi), shallow
- Epicenter
- 48.278° N, 123.196° 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 0.7 km horizontally, 1.0 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 41°
- 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: 2 in the 60 days after this one and 6 in the 30 days before it.
After
- 2.015 km NE of Saltair, Canada · 14114 days ago · 52 km deep · 91 km away
- 1.55 km WSW of Erlands Point-Kitsap Lake, Washington · 14110 days ago · 14 km deep · 84 km away
Before
- 1.64 km NW of Victoria, Canada · 14153 days ago · 22 km deep · 25 km away
- 2.73 km NNW of Victoria, Canada · 14157 days ago · 23 km deep · 24 km away
- 1.81 km SSW of Navy Yard City, Washington · 14163 days ago · 22 km deep · 91 km away
- 2.115 km SW of Brinnon, Washington · 14165 days ago · 44 km deep · 77 km away
- 1.83 km WSW of Shoreline, Washington · 14181 days ago · 14 km deep · 85 km away
- 1.54 km E of Port Ludlow, Washington · 14181 days ago · 16 km deep · 59 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10229483. Read Tue, Sep 22, 2026, 12:10 PM UTC.