Washington earthquakes

M1.8 earthquake 5 km NE of Tanner, Washington

A magnitude 1.8 earthquake struck 5 km NE of Tanner, Washington on Thu, Jul 30, 1987, 11:12 PM PDT (06:12 UTC), 13 km (8 mi) below the surface.

A larger quake followed: M2.0 6 km NE of Thorp, Washington. This one was a foreshock.

Tanner forecastMore in Washington

Map

Where this earthquake was located, with the others nearby. Select one for its page.

Open the live map with earthquakes

The earthquake

Magnitude
1.8 (md), micro
Local time
UTC
1987-07-31 06:12:59 UTC
Depth
13.1 km (8.1 mi), shallow
Epicenter
47.511° N, 121.700° W
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, 0.7 km in depth
Magnitude uncertainty
±0.06
Depth from
From location
Station coverage gap
106°
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: 16 in the 60 days after this one and 6 in the 30 days before it.

After

  1. 1.66 km WSW of Easton, Washington · 14294 days ago · 20 km deep · 47 km away
  2. 1.61 km ESE of Lake Marcel-Stillwater, Washington · 14294 days ago · 0 km deep · 25 km away
  3. 1.55 km NNE of Duvall, Washington · 14293 days ago · 23 km deep · 35 km away
  4. 1.87 km WNW of Gorst, Washington · 14288 days ago · 11 km deep · 82 km away
  5. 1.57 km ESE of Ravensdale, Washington · 14278 days ago · -1 km deep · 26 km away
  6. 1.72 km N of Black Diamond, Washington · 14278 days ago · 18 km deep · 30 km away
  7. 2.06 km NE of Thorp, Washington · 14277 days ago · 8 km deep · 92 km away
  8. 1.81 km NNW of Tanner, Washington · 14276 days ago · 9 km deep · 5 km away
  9. 2.136 km NE of Skykomish, Washington · 14265 days ago · 0 km deep · 70 km away
  10. 1.736 km NE of Skykomish, Washington · 14265 days ago · 0 km deep · 70 km away
  11. 1.83 km NW of Bainbridge Island, Washington · 14264 days ago · 20 km deep · 66 km away
  12. 2.123 km ENE of Ashford, Washington · 14264 days ago · 1 km deep · 73 km away
  13. 1.85 km NE of Ravensdale, Washington · 14260 days ago · 2 km deep · 22 km away
  14. 1.61 km SW of Lake Marcel-Stillwater, Washington · 14245 days ago · 22 km deep · 25 km away
  15. 1.513 km NE of Cliffdell, Washington · 14244 days ago · -1 km deep · 79 km away
  16. 2.15 km NE of Kingston, Washington · 14243 days ago · 16 km deep · 67 km away

Before

  1. 1.625 km ENE of Ashford, Washington · 14304 days ago · 0 km deep · 73 km away
  2. 2.711 km ENE of Hoodsport, Washington · 14304 days ago · 15 km deep · 97 km away
  3. 1.917 km ENE of Packwood, Washington · 14312 days ago · 8 km deep · 94 km away
  4. 1.923 km ENE of Ashford, Washington · 14317 days ago · -1 km deep · 74 km away
  5. 1.823 km ENE of Ashford, Washington · 14325 days ago · 2 km deep · 73 km away
  6. 1.92 km WNW of City of Sammamish, Washington · 14326 days ago · 0 km deep · 30 km away

Earthquakes todayWashington earthquakesLive radar here

Sources

From the USGS Earthquake Hazards Program and its partner networks, event uw10223718. Read Tue, Sep 22, 2026, 9:25 PM UTC.