M1.8 earthquake 8 km SE of Hamilton, Washington
A magnitude 1.8 earthquake struck 8 km SE of Hamilton, Washington on Mon, Jan 5, 1987, 12:53 AM PST (08:53 UTC), 7 km (4 mi) below the surface.
A larger quake followed: M2.0 2 km SE of Woods Creek, Washington. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 1.8 (md), micro
- Local time
- UTC
- 1987-01-05 08:53:53 UTC
- Depth
- 7.0 km (4.3 mi), shallow
- Epicenter
- 48.459° N, 121.926° 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, 1.5 km in depth
- Magnitude uncertainty
- ±0.06
- Depth from
- From location
- Station coverage gap
- 89°
- Stations used
- 18
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 6 in the 60 days after this one and 7 in the 30 days before it.
After
- 2.02 km SE of Woods Creek, Washington · 14500 days ago · 18 km deep · 67 km away
- 2.75 km WNW of Edmonds, Washington · 14495 days ago · 19 km deep · 80 km away
- 1.64 km WNW of Edmonds, Washington · 14495 days ago · 18 km deep · 81 km away
- 1.50 km ENE of Esperance, Washington · 14490 days ago · 22 km deep · 81 km away
- 1.57 km SSE of Hamilton, Washington · 14486 days ago · 11 km deep · 0 km away
- 1.618 km NNW of Orcas, Washington · 14476 days ago · 53 km deep · 88 km away
Before
- 2.019 km SSE of Marblemount, Washington · 14512 days ago · 9 km deep · 43 km away
- 1.95 km NW of Orcas, Washington · 14514 days ago · 15 km deep · 81 km away
- 2.01 km W of Kingsgate, Washington · 14514 days ago · 15 km deep · 84 km away
- 1.93 km NW of Geneva, Washington · 14515 days ago · 17 km deep · 51 km away
- 1.6Puget Sound region, Washington · 14527 days ago · 17 km deep · 87 km away
- 2.42 km W of Union Hill-Novelty Hill, Washington · 14527 days ago · 18 km deep · 88 km away
- 1.91 km E of Kirkland, Washington · 14534 days ago · 22 km deep · 89 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10214308. Read Tue, Sep 22, 2026, 8:40 AM UTC.