M1.6 earthquake 14 km NNW of Tampico, Washington
A magnitude 1.6 earthquake struck 14 km NNW of Tampico, Washington on Fri, Aug 28, 1987, 7:10 PM PDT (02:10 UTC), 5 km (3 mi) below the surface.
A larger quake followed: M2.1 23 km ENE of Ashford, 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
- 1987-08-29 02:10:50 UTC
- Depth
- 5.0 km (3.1 mi), shallow
- Epicenter
- 46.650° N, 120.966° 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, 1.3 km in depth
- Magnitude uncertainty
- ±0.08
- Depth from
- From location
- Station coverage gap
- 58°
- Stations used
- 20
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 8 in the 60 days after this one and 2 in the 30 days before it.
After
- 2.123 km ENE of Ashford, Washington · 14263 days ago · 1 km deep · 65 km away
- 1.821 km NNE of Goldendale, Washington · 14245 days ago · 12 km deep · 77 km away
- 1.513 km NE of Cliffdell, Washington · 14244 days ago · -1 km deep · 42 km away
- 1.930 km E of Packwood, Washington · 14243 days ago · -1 km deep · 24 km away
- 1.819 km WNW of Desert Aire, Washington · 14237 days ago · 2 km deep · 62 km away
- 1.516 km NNW of Vantage, Washington · 14236 days ago · 0 km deep · 82 km away
- 2.616 km NNW of Vantage, Washington · 14232 days ago · 0 km deep · 81 km away
- 2.025 km ENE of Ashford, Washington · 14219 days ago · -1 km deep · 63 km away
Before
Earthquakes todayWashington earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event uw10225838. Read Tue, Sep 22, 2026, 4:01 PM UTC.